Product Innovation Archives - Mivena | Specialty fertilizer company https://mivena.nl/category/product-innovation/ The specialist in specialty fertilizers Thu, 10 Sep 2026 07:14:46 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.2 https://mivena.nl/wp-content/uploads/2024/02/cropped-Logo-transparant-Mivena-32x32.png Product Innovation Archives - Mivena | Specialty fertilizer company https://mivena.nl/category/product-innovation/ 32 32 Autumn Turf Fertilization: Why Coated Fertilizers Win https://mivena.nl/autumn-winter-fertilization-coated-fertilizer/ Wed, 09 Sep 2026 08:50:47 +0000 https://mivena.nl/?p=10395 Autumn Fertilization: Why a Coated Fertilizer Makes the Biggest Difference Now The last application of the year may well be the most important one. The turf has to get through the entire winter on it, while conditions move in exactly the wrong direction. Temperatures drop, growth slows down and rainfall increases. That is the moment when the real value of a fertilizer becomes visible. Because a granule that releases everything at once will do so even when the grass cannot use it. Autumn is the most demanding feeding moment of the year In spring and summer the grass grows fast. Nutrients that become available are taken up almost immediately. There is room for error. In autumn that room disappears. The uptake capacity of the plant declines, while the risk of loss increases. So the question is not only how much you apply, but above all how and when those nutrients become available. Release that follows temperature Temperature-driven release See how soil temperature influences nutrient release Adjust the soil temperature and compare how a Durable® coated fertilizer releases nutrients gradually, while a conventional fast-acting fertilizer makes nutrients available much faster. Soil temperature Move the slider to simulate conditions 11 °C 0 °C 5 °C 10 °C 15 °C 20 °C 25 °C Winter · 3 °C Early spring · 8 °C Autumn · 11 °C Growing season · 18 °C Nutrient release after application Controlled release active Durable® coated fertilizer Conventional fertilizer Durable® coated 0% Estimated nutrient release after 4 weeks Conventional 0% Estimated nutrient release after 4 weeks i Autumn conditions As soil temperatures decrease, nutrient release from the coated granule slows down as well. This helps align nutrient availability more closely with plant activity. Illustrative representation of the nutrient release principle. Actual release depends on product formulation, specified longevity, soil temperature, moisture and local growing conditions. With Durable® coating technology from Mivena, nutrients are released in a controlled and gradual way. That release is largely driven by temperature. As long as soil temperature is high enough and the grass is still actively growing, nutrients keep becoming available. When temperature drops and growth slows, the release slows down as well. Higher temperature and active growth = more release. Lower temperature and limited growth = less release. Feeding therefore matches the actual demand of the grass far more closely. The fertilizer effectively moves along with the season. No unwanted nutrient peak in the final autumn application With a fast acting conventional fertilizer, a large share of the nutrients becomes available shortly after application. Late in the season this can work against you. Growth is slowing down and so is the demand for nitrogen. A large volume of directly available nutrition is then used less efficiently. A Durable® coated fertilizer prevents that sharp peak. Nutrients become available gradually and follow the activity of the plant. The grass is fed when it can actually use the nutrition, without forcing an unnecessary flush at the end of the season. Lower risk of leaching In autumn and winter the risk of leaching increases. Rainfall is higher, while nutrient uptake by the grass is lower. With Durable®, a significant part of the nutrition stays protected inside the coating and is only released gradually. This helps to limit losses and keeps more of the applied nutrition available to the turf. Less loss ultimately means a more efficient use of every kilogram of fertilizer. Performance from autumn into early spring One of the biggest advantages of a coated fertilizer is its long working period. Depending on the product and the conditions, an autumn application can continue to supply nutrition over an extended period. Autumn → winter → early spring When temperatures are low during winter, release slows down considerably. As soon as temperatures rise again in spring, release picks up. The grass is fed in autumn while there is still growth, release is limited during cold spells, and nutrition becomes available again in early spring as soon as growth resumes. High potassium: ideal heading into winter For autumn and winter feeding, formulations with a relatively high potassium content are particularly interesting. Potassium plays an important role in: the water balance of the plant; cell wall strength; stress tolerance; winter hardiness; the overall vitality of the sward. This is why Granucote® and GreenStar® with a high potassium content are very well suited for applications heading into winter. Formulations with an N:K ratio of roughly 1:2 supply enough nitrogen for controlled growth, combined with extra potassium to take the plant into winter strong and vital. Why coating matters most in this period A high quality coated fertilizer offers benefits all year round. But nowhere do the properties of Durable® come together as clearly as in the autumn and winter period: no sharp release peak; lower risk of leaching; temperature driven feeding; long lasting performance; nutrition that becomes available again once growth resumes. Frequently asked questions 01 When should I apply the last autumn fertilization? As long as the grass still shows active growth and the soil temperature is sufficient. With a coated fertilizer, timing is less critical because nutrient release adapts to temperature. 02 What is the difference between a coated and a fast-acting fertilizer? A fast-acting fertilizer releases most of its nutrients shortly after application. A coated fertilizer releases nutrients gradually, with the release rate primarily driven by temperature. 03 Why is potassium important in autumn? Potassium supports water regulation, cell strength, stress tolerance and winter hardiness, helping the grass plant prepare for colder and more stressful conditions. 04 Does an autumn application still work in spring? Yes. At low temperatures, nutrient release slows down considerably. As soil temperatures rise again in early spring, release gradually increases and the remaining nutrients become available to the grass. Choose on timing, not just on quantity For the final application of the year, the question is not how much nutrition is in the bag, but when that nutrition reaches the plant. With Durable® you choose a feeding programme that adapts to

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Autumn Fertilization: Why a Coated Fertilizer Makes the Biggest Difference Now

The last application of the year may well be the most important one. The turf has to get through the entire winter on it, while conditions move in exactly the wrong direction. Temperatures drop, growth slows down and rainfall increases.

That is the moment when the real value of a fertilizer becomes visible. Because a granule that releases everything at once will do so even when the grass cannot use it.

Autumn is the most demanding feeding moment of the year

In spring and summer the grass grows fast. Nutrients that become available are taken up almost immediately. There is room for error.

In autumn that room disappears. The uptake capacity of the plant declines, while the risk of loss increases. So the question is not only how much you apply, but above all how and when those nutrients become available.

Release that follows temperature

Temperature-driven release

See how soil temperature influences nutrient release

Adjust the soil temperature and compare how a Durable® coated fertilizer releases nutrients gradually, while a conventional fast-acting fertilizer makes nutrients available much faster.

Soil temperature Move the slider to simulate conditions
11 °C
0 °C 5 °C 10 °C 15 °C 20 °C 25 °C

Nutrient release after application

Controlled release active
Durable® coated fertilizer
Conventional fertilizer
Durable® coated
0%
Estimated nutrient release after 4 weeks
Conventional
0%
Estimated nutrient release after 4 weeks
i
Autumn conditions

As soil temperatures decrease, nutrient release from the coated granule slows down as well. This helps align nutrient availability more closely with plant activity.

Illustrative representation of the nutrient release principle. Actual release depends on product formulation, specified longevity, soil temperature, moisture and local growing conditions.

With Durable® coating technology from Mivena, nutrients are released in a controlled and gradual way. That release is largely driven by temperature.

As long as soil temperature is high enough and the grass is still actively growing, nutrients keep becoming available. When temperature drops and growth slows, the release slows down as well.

  • Higher temperature and active growth = more release.
  • Lower temperature and limited growth = less release.

Feeding therefore matches the actual demand of the grass far more closely. The fertilizer effectively moves along with the season.

No unwanted nutrient peak in the final autumn application

With a fast acting conventional fertilizer, a large share of the nutrients becomes available shortly after application.

Late in the season this can work against you. Growth is slowing down and so is the demand for nitrogen. A large volume of directly available nutrition is then used less efficiently.

A Durable® coated fertilizer prevents that sharp peak. Nutrients become available gradually and follow the activity of the plant. The grass is fed when it can actually use the nutrition, without forcing an unnecessary flush at the end of the season.

Lower risk of leaching

In autumn and winter the risk of leaching increases. Rainfall is higher, while nutrient uptake by the grass is lower.

With Durable®, a significant part of the nutrition stays protected inside the coating and is only released gradually. This helps to limit losses and keeps more of the applied nutrition available to the turf.

Less loss ultimately means a more efficient use of every kilogram of fertilizer.

Performance from autumn into early spring

One of the biggest advantages of a coated fertilizer is its long working period. Depending on the product and the conditions, an autumn application can continue to supply nutrition over an extended period.

Autumn → winter → early spring

When temperatures are low during winter, release slows down considerably. As soon as temperatures rise again in spring, release picks up.

The grass is fed in autumn while there is still growth, release is limited during cold spells, and nutrition becomes available again in early spring as soon as growth resumes.

High potassium: ideal heading into winter

For autumn and winter feeding, formulations with a relatively high potassium content are particularly interesting. Potassium plays an important role in:

  • the water balance of the plant;
  • cell wall strength;
  • stress tolerance;
  • winter hardiness;
  • the overall vitality of the sward.

This is why Granucote® and GreenStar® with a high potassium content are very well suited for applications heading into winter.

Formulations with an N:K ratio of roughly 1:2 supply enough nitrogen for controlled growth, combined with extra potassium to take the plant into winter strong and vital.

Why coating matters most in this period

A high quality coated fertilizer offers benefits all year round. But nowhere do the properties of Durable® come together as clearly as in the autumn and winter period:

  • no sharp release peak;
  • lower risk of leaching;
  • temperature driven feeding;
  • long lasting performance;
  • nutrition that becomes available again once growth resumes.

Frequently asked questions

As long as the grass still shows active growth and the soil temperature is sufficient. With a coated fertilizer, timing is less critical because nutrient release adapts to temperature.

A fast-acting fertilizer releases most of its nutrients shortly after application. A coated fertilizer releases nutrients gradually, with the release rate primarily driven by temperature.

Potassium supports water regulation, cell strength, stress tolerance and winter hardiness, helping the grass plant prepare for colder and more stressful conditions.

Yes. At low temperatures, nutrient release slows down considerably. As soil temperatures rise again in early spring, release gradually increases and the remaining nutrients become available to the grass.

Choose on timing, not just on quantity

For the final application of the year, the question is not how much nutrition is in the bag, but when that nutrition reaches the plant.

With Durable® you choose a feeding programme that adapts to the conditions and supports the turf from autumn well into the new season.

Controlled nutrition when the grass needs it most.

Wondering which formulation fits your turf and season best? Get in touch with Mivena or explore the Granucote® and GreenStar® range.

VIEW GRANUCOTE® CRF
VIEW GREENSTAR® CRF

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]]> Hard Water vs Soft Water in Irrigation: What Growers Need to Know https://mivena.nl/hard-water-soft-water-irrigation/ Tue, 05 May 2026 13:58:38 +0000 https://mivena.nl/?p=10091 Water quality plays a crucial role in fertilizer performance. Learn how hard and soft irrigation water affect pH, bicarbonates, nutrient availability and fertigation efficiency, and how Mivena helps growers choose the right water-soluble fertilizer strategy.

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Hard Water vs Soft Water in Irrigation: Causes, Effects and Fertilizer Solutions

Water is the starting point of every fertilization strategy.

Growers often focus on fertilizer composition, NPK ratio, trace elements and application rates. These are all important. But before any fertilizer can perform, it first has to interact with the irrigation water.

That water determines how nutrients dissolve, how they move through the irrigation system and how they behave in the root zone. A well-balanced water-soluble fertilizer can only deliver its full value when the starting water is understood.

For professional growers, one of the most important distinctions is the difference between hard water and soft water.

What is hard water?

Hard water contains relatively high levels of dissolved minerals, mainly calcium and magnesium. In horticulture, however, the real challenge is often not hardness alone, but the level of bicarbonates and carbonates in the water.

These compounds determine the alkalinity of the water. Alkalinity is the water’s capacity to neutralize acid. In practical terms, it acts like a “liming effect” in the irrigation water. Over time, high alkalinity can increase the pH of the growing medium or substrate.

This is why pH alone does not tell the full story. Water with a high pH but low alkalinity may have little long-term effect on substrate pH. Water with moderate pH but high alkalinity can have a much stronger effect over time.

As a practical guideline, irrigation water with elevated bicarbonate levels, for example above approximately 2.0–2.5 mmol/L, should be evaluated carefully. The exact risk depends on crop type, substrate, container size, irrigation volume and fertilizer strategy.

What causes hard water?

Hard water is usually created when water passes through mineral-rich soil or rock layers. During this process, calcium, magnesium, carbonates and bicarbonates dissolve into the water.

Common hard water sources include:

  • Well water
  • Borehole water
  • Groundwater from limestone-rich regions
  • Some municipal water sources
  • Recycled irrigation water with mineral build-up

Rainwater and reverse osmosis water are usually much softer because they contain very low levels of dissolved minerals.

How hard water affects plant nutrition

Hard water can be beneficial in some situations because it may supply calcium and magnesium. But when bicarbonate and alkalinity are too high, the negative effects often become more important.

1. Rising substrate pH

High bicarbonate water neutralizes acidity in the root zone. Over time, this can raise substrate pH. When the pH rises above the optimal range, several nutrients become less available to the plant.

Iron is one of the first elements affected. High pH can lead to iron deficiency, often visible as yellowing of young leaves while the veins remain greener.

2. Reduced trace element availability

At higher pH levels, important micronutrients such as iron, manganese, zinc and copper become less available. The nutrients may still be present in the fertilizer or substrate, but the plant cannot take them up efficiently.

This can lead to symptoms that look like under-fertilization, even when enough fertilizer is being applied.

3. Precipitation and clogging risk

High bicarbonate water can also increase the risk of calcium carbonate precipitation. This may cause deposits in irrigation systems, emitters, filters or on leaves after overhead irrigation. Bicarbonate concentrations above about 2 meq/L, especially combined with pH above 7.5, can contribute to calcium carbonate precipitation.

This is especially relevant for drip irrigation and fertigation systems where clean flow and reliable distribution are essential.

4. Lower fertilizer efficiency

When water quality is not matched with the right fertilizer, nutrient efficiency decreases. Growers may apply more fertilizer to correct visual symptoms, while the real issue is pH or bicarbonate pressure.

This can increase costs, EC levels and crop stress without solving the root cause.

What is soft water?

Soft water contains low levels of calcium, magnesium and bicarbonates. Common examples include rainwater, reverse osmosis water and some surface water sources.

Soft water has advantages. It usually has a low EC, low salt load and fewer risks of precipitation. But it also has limitations.

Because soft water has little buffering capacity, the pH can shift more easily. It may also lack calcium and magnesium, which are essential for strong cell walls, root development, fruit quality and overall crop strength.

For growers using soft water, the focus is often not acidification, but supplementation. The fertilizer programme may need to supply additional calcium, magnesium and trace elements.

Hard water vs soft water: the practical difference

The key is not to label one water source as good and the other as bad. Both hard and soft water can be managed successfully.

The real question is:

Does the fertilizer strategy match the water quality?

Hard water often requires an acidifying approach to neutralize bicarbonates and control pH development.

Soft water often requires a more complete nutritional approach with sufficient calcium, magnesium and buffering support.

That is why a standard fertilizer recommendation is not always enough. The same fertilizer can behave differently depending on the starting water.

The role of acidifying and basic fertilizer effect

Water-soluble fertilizers can have different effects on pH. Some formulations have an acidifying effect, while others are more neutral or basic.

There are two important effects to consider:

1. Direct pH effect
This is the short-term effect when the fertilizer dissolves in the irrigation water.

2. Total root-zone effect
This is the longer-term effect during crop growth, influenced by nitrogen form, nutrient uptake, substrate buffering and irrigation frequency.

For hard water, the fertilizer should help counter the bicarbonate pressure. For soft water, the fertilizer should avoid pushing the pH too low and should provide enough calcium and magnesium where needed.

Mivena’s approach: start with the water

At Mivena, we believe that fertilization advice should start with a water analysis.

Important parameters include:

  • pH
  • EC
  • bicarbonate / alkalinity
  • calcium
  • magnesium
  • sodium
  • chloride
  • sulphate
  • iron and manganese
  • crop type and substrate

Only when these factors are known can the right fertilizer strategy be selected.

Mivena’s Granusol® WSF range is developed for precise fertigation and foliar application in professional horticulture, turf and substrate cultivation. The range includes fully water-soluble formulations with magnesium, chelated trace elements and MV10 for improved nutrient uptake efficiency.

For hard water situations, Mivena also offers Granusol® Hard Water formulations. These are designed to support growers dealing with high bicarbonate irrigation water and the need for acidifying correction. Mivena also offers calcium-containing WSF formulations for soft water use, where additional calcium supply may be required.

Practical solutions for hard water

1. Analyse the water first

A water analysis is the foundation of the strategy. Without bicarbonate and alkalinity data, pH management becomes guesswork.

2. Choose an acidifying fertilizer

In many hard water situations, an acidifying water-soluble fertilizer can help reduce bicarbonate pressure and keep the root-zone pH more stable.

3. Use acid injection where needed

When alkalinity is too high, fertilizer choice alone may not be enough. Acid injection can be used to neutralize bicarbonates before the water reaches the crop. Common acids include nitric, phosphoric and sulfuric acid, but the choice must always be calculated carefully because acids also influence the nutrient balance.

4. Prevent precipitation

Correct pH and bicarbonate management reduces the risk of calcium carbonate deposits and clogging in irrigation systems.

5. Monitor the substrate

The water analysis is only the starting point. Growers should also monitor substrate pH and EC during the crop cycle to confirm whether the strategy is working.

Practical solutions for soft water

1. Analyse the water first

A water analysis is the foundation of the strategy. Without bicarbonate and alkalinity data, pH management becomes guesswork.

2. Choose an acidifying fertilizer

In many hard water situations, an acidifying water-soluble fertilizer can help reduce bicarbonate pressure and keep the root-zone pH more stable.

3. Use acid injection where needed

When alkalinity is too high, fertilizer choice alone may not be enough. Acid injection can be used to neutralize bicarbonates before the water reaches the crop. Common acids include nitric, phosphoric and sulfuric acid, but the choice must always be calculated carefully because acids also influence the nutrient balance.

4. Prevent precipitation

Correct pH and bicarbonate management reduces the risk of calcium carbonate deposits and clogging in irrigation systems.

5. Monitor the substrate

The water analysis is only the starting point. Growers should also monitor substrate pH and EC during the crop cycle to confirm whether the strategy is working.

Practical solutions for soft water

1. Add calcium and magnesium where needed

Soft water often contains little natural calcium and magnesium. These nutrients should be supplied through the fertilizer programme.

2. Avoid excessive acidification

Because soft water has low buffering capacity, strongly acidifying fertilizers can push the root-zone pH down too far.

3. Monitor pH stability

Soft water systems can change quickly. Regular pH and EC checks help prevent sudden nutrient imbalances.

4. Consider calcium-based WSF formulations

For crops with high calcium demand, such as soft fruit, vegetables and ornamentals, calcium-containing water-soluble fertilizers can help maintain crop quality and plant strength.

Why this matters for growers

Water quality directly affects fertilizer performance.

When water and fertilizer are not aligned, growers may face:

  • nutrient lock-up
  • iron deficiency
  • unstable pH
  • higher EC
  • clogged irrigation systems
  • weaker crop development
  • lower fertilizer efficiency
  • unnecessary correction costs

When water and fertilizer are aligned, growers gain more control over crop performance.

The result is a more stable root zone, better nutrient availability, cleaner irrigation and more efficient use of every kilogram of fertilizer applied.

Conclusion

Hard water and soft water both require a specific fertilization strategy.

Hard water is often linked to high bicarbonate and alkalinity, which can raise substrate pH and reduce nutrient availability. Soft water has low buffering capacity and may require additional calcium and magnesium support.

The solution starts with understanding the water source. By analysing pH, EC, bicarbonates, calcium and magnesium, growers can select the right fertilizer formulation and avoid unnecessary crop problems.

Mivena supports professional growers and distributors with tailored water-soluble fertilizer solutions for different water types, crops and cultivation systems.

Do you want to improve your fertigation strategy? Start with your water analysis and contact your local Mivena distributor for tailored fertilizer advice.

FAQ

Frequently Asked Questions about Hard and Soft Irrigation Water

Understanding the difference between hard and soft irrigation water helps growers improve nutrient availability, pH stability and fertilizer efficiency.

What is the difference between hard water and soft water in irrigation?

Hard water contains higher levels of minerals such as calcium and magnesium. In horticulture, the most important factor is often bicarbonate alkalinity, because this can increase substrate pH over time. Soft water contains fewer dissolved minerals and has lower buffering capacity.

Why is bicarbonate important in irrigation water?

Bicarbonate neutralizes acidity in the root zone. When bicarbonate levels are too high, substrate pH can rise, reducing the availability of nutrients such as iron, manganese and zinc.

Can hard water cause nutrient deficiencies?

Yes. Hard water with high alkalinity can raise substrate pH, which may reduce micronutrient availability. Iron deficiency is one of the most common symptoms.

Is soft water always better for plants?

No. Soft water has advantages, such as low EC and low precipitation risk, but it may lack calcium and magnesium. It also has little buffering capacity, so pH can change quickly.

What fertilizer should be used with hard water?

Hard water often requires an acidifying water-soluble fertilizer or, in more severe cases, acid injection. Mivena’s Granusol® Hard Water range is developed for situations where irrigation water requires an acidifying approach.

What fertilizer should be used with soft water?

Soft water often benefits from fertilizers that supply calcium, magnesium and trace elements without over-acidifying the root zone. Calcium-containing WSF formulations can be useful depending on crop demand and water analysis.

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]]> Does size matter? https://mivena.nl/fertilizer-spread/ Thu, 04 Dec 2025 12:30:09 +0000 https://mivena.nl/?p=7872 Better Spread, Better Fertilization Does size matter? It may sound playful, but in controlled-release fertilizers it points to something essential: granule size and, even more importantly, how many granules you apply per gram. Modern CRF technology focuses on coatings, osmotic processes and release curves, but true nutritional uniformity starts with something much simpler. It’s the number of contact points on the field or in the growing medium, the number of granules within a single gram of fertilizer. More granules means more precision A CRF granule is not just a pellet. It is a micro-reservoir of nutrients that releases over several months. When you apply fifteen or sixteen of those reservoirs per gram, the feeding pattern across the crop looks very different compared to applying forty or more. Mivena compared several similar CRF products, all with six-month longevity and all fully coated NPK formulas. Each product was tested by counting exactly one gram of granules. The results were striking. Results: Horti-Cote Plus 16-6-11 → 41 granules per gramO-cote Exact Standard 15-9-12 → 28 granules per gramM-Cote 15-9-15 → 17 granules per gramE-kote 15-9-14 → 16 granules per gram The conclusion is simple. When the same amount of nutrients is divided over smaller and more uniform granules, you create more contact points in the root zone. More contact points lead to a more even nutrient supply. And a CRF that falls more evenly performs more evenly. The comparison speaks for itself. At the same weight, Durable® CRF 44-0-0 delivers roughly four times more granules than Cote-N 42-0-0. More granules mean more contact points, a finer spread pattern and noticeably more uniform feeding across the treated area. This simple physical difference directly translates into more consistent plant performance. Impact on growth, colour and root development Plant performance is highly sensitive to variations in nutrient distribution. A finer granule distribution leads to more uniform colour, more consistent leaf mass and fewer visible patches. In both turf and horticultural crops, a higher granule count results in steadier growth and predictable biomass production. Roots benefit as well. When nutrients are released evenly, stress is reduced and plants develop a more balanced root system. This effect is especially important in soft fruit, pot plants and young plants where uniformity is critical. Visual of spread quality The Durable CRF visualization shows clearly how granule count affects real-world spreading. A product with about 120 granules per gram creates a near pixel-like coverage, while one with only thirty leaves gaps and clusters. This difference in physical spread leads to noticeable differences in plant response, not because the formulation changes, but because the distribution does. Why Mivena focuses on high granule density In Horti-Cote Plus and Durable CRF, Mivena intentionally uses compact, high-density granules. Each particle is fully coated and engineered for controlled nutrient release. By increasing the number of granules per gram, feeding becomes more stable, more predictable and ultimately more efficient. Conclusion: Does size matter? Yes, size matters, especially when it comes to performance. CRF performance is not driven by chemistry alone. It also depends on a physical reality that is often overlooked: how evenly the nutrition is distributed. The difference between sixteen and forty-one granules per gram is the difference between average uniformity and true professional precision. Granule count determines spread quality. Spread quality determines growth quality. And that makes granule size and granule density one of the most underestimated performance factors in controlled-release fertilizers.

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Better Spread, Better Fertilization

Does size matter? It may sound playful, but in controlled-release fertilizers it points to something essential: granule size and, even more importantly, how many granules you apply per gram.

Modern CRF technology focuses on coatings, osmotic processes and release curves, but true nutritional uniformity starts with something much simpler. It’s the number of contact points on the field or in the growing medium, the number of granules within a single gram of fertilizer.

More granules means more precision

A CRF granule is not just a pellet. It is a micro-reservoir of nutrients that releases over several months. When you apply fifteen or sixteen of those reservoirs per gram, the feeding pattern across the crop looks very different compared to applying forty or more.

Mivena compared several similar CRF products, all with six-month longevity and all fully coated NPK formulas. Each product was tested by counting exactly one gram of granules. The results were striking.

Results:

Horti-Cote Plus 16-6-11 → 41 granules per gram
O-cote Exact Standard 15-9-12 → 28 granules per gram
M-Cote 15-9-15 → 17 granules per gram
E-kote 15-9-14 → 16 granules per gram

The conclusion is simple. When the same amount of nutrients is divided over smaller and more uniform granules, you create more contact points in the root zone. More contact points lead to a more even nutrient supply. And a CRF that falls more evenly performs more evenly.

The comparison speaks for itself. At the same weight, Durable® CRF 44-0-0 delivers roughly four times more granules than Cote-N 42-0-0. More granules mean more contact points, a finer spread pattern and noticeably more uniform feeding across the treated area. This simple physical difference directly translates into more consistent plant performance.

Impact on growth, colour and root development

Plant performance is highly sensitive to variations in nutrient distribution. A finer granule distribution leads to more uniform colour, more consistent leaf mass and fewer visible patches. In both turf and horticultural crops, a higher granule count results in steadier growth and predictable biomass production.

Roots benefit as well. When nutrients are released evenly, stress is reduced and plants develop a more balanced root system. This effect is especially important in soft fruit, pot plants and young plants where uniformity is critical.

Visual of spread quality

The Durable CRF visualization shows clearly how granule count affects real-world spreading. A product with about 120 granules per gram creates a near pixel-like coverage, while one with only thirty leaves gaps and clusters.

This difference in physical spread leads to noticeable differences in plant response, not because the formulation changes, but because the distribution does.

Why Mivena focuses on high granule density

In Horti-Cote Plus and Durable CRF, Mivena intentionally uses compact, high-density granules. Each particle is fully coated and engineered for controlled nutrient release. By increasing the number of granules per gram, feeding becomes more stable, more predictable and ultimately more efficient.

Conclusion: Does size matter?

Yes, size matters, especially when it comes to performance.

CRF performance is not driven by chemistry alone. It also depends on a physical reality that is often overlooked: how evenly the nutrition is distributed. The difference between sixteen and forty-one granules per gram is the difference between average uniformity and true professional precision.

Granule count determines spread quality. Spread quality determines growth quality. And that makes granule size and granule density one of the most underestimated performance factors in controlled-release fertilizers.

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]]> Durable® CRF technology https://mivena.nl/durable-crf-technology/ Mon, 15 May 2023 12:04:00 +0000 https://mivena.nl/?p=1543 Durable® CRF technology Mivena proudly presents the renewed Durable® CRF technology, now more robust and efficient than ever before. This biodegradable technology has been optimized for controlled and consistent nutrient release, resulting in healthier crops and minimal environmental impact. What Makes Durable® CRF Unique? 1. Biodegradable Coating:The Durable® CRF technology utilizes an innovative coating that is fully biodegradable, making it an environmentally friendly choice for modern horticulture. 2. Consistent Nutrient Release:The unique low-start and high-end release mechanism ensures a steady nutrient supply throughout the entire lifespan of the fertilizer, with no risk of swelling or leaching granules. 3. Temperature-Controlled Release:Nutrient release is solely determined by temperature, with no exponential increase at higher temperatures. This provides a consistent and reliable nutrient source for plants. 4. High Effectiveness:Over 90% of the nutrients are effectively released within the specified longevity period, allowing plants to thrive optimally. 5. Small, Round Granules:The 2-3 mm granules are small, round, and have a neutral color, making them easy to apply discreetly in various cultivation environments. Applications of Durable® CRF in Mivena Products The Durable® CRF technology is used in several top Mivena brands, each tailored to different markets: Granucote CRF: Ideal for the turf market, ensuring consistently green and healthy grass. Field-cote CRF: Specifically developed for open field horticulture, focusing on maximizing crop yield. Horti-cote CRF (Grow-cote CRF): Designed for use in potting soil, perfect for potted plants and ornamentals. Benefits for Horticulture Using Mivena’s Durable® CRF technology not only contributes to healthier crops but also helps reduce ammonia volatilization, which has a positive environmental impact. This aligns perfectly with Mivena’s mission to leave the world a better place for future generations.

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Durable® CRF technology

Mivena proudly presents the renewed Durable® CRF technology, now more robust and efficient than ever before. This biodegradable technology has been optimized for controlled and consistent nutrient release, resulting in healthier crops and minimal environmental impact.

What Makes Durable® CRF Unique?

1. Biodegradable Coating:
The Durable® CRF technology utilizes an innovative coating that is fully biodegradable, making it an environmentally friendly choice for modern horticulture.

2. Consistent Nutrient Release:
The unique low-start and high-end release mechanism ensures a steady nutrient supply throughout the entire lifespan of the fertilizer, with no risk of swelling or leaching granules.

3. Temperature-Controlled Release:
Nutrient release is solely determined by temperature, with no exponential increase at higher temperatures. This provides a consistent and reliable nutrient source for plants.

4. High Effectiveness:
Over 90% of the nutrients are effectively released within the specified longevity period, allowing plants to thrive optimally.

5. Small, Round Granules:
The 2-3 mm granules are small, round, and have a neutral color, making them easy to apply discreetly in various cultivation environments.

Applications of Durable® CRF in Mivena Products

The Durable® CRF technology is used in several top Mivena brands, each tailored to different markets:

  • Granucote CRF: Ideal for the turf market, ensuring consistently green and healthy grass.
  • Field-cote CRF: Specifically developed for open field horticulture, focusing on maximizing crop yield.
  • Horti-cote CRF (Grow-cote CRF): Designed for use in potting soil, perfect for potted plants and ornamentals.

Benefits for Horticulture

Using Mivena’s Durable® CRF technology not only contributes to healthier crops but also helps reduce ammonia volatilization, which has a positive environmental impact. This aligns perfectly with Mivena’s mission to leave the world a better place for future generations.

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]]> Mivena-CRF: Consistently Most Reliable CRF-Coating on the Market https://mivena.nl/mivena-crf-consistently-most-reliable-crf-coating-on-the-market/ https://mivena.nl/mivena-crf-consistently-most-reliable-crf-coating-on-the-market/#respond Fri, 10 Jun 2022 11:42:00 +0000 https://mivena.nl/?p=1486 Mivena controlled release fertilizers-CRF We as Mivena use one high quality biodegradable coating for our controlled release fertilizer brands as Granucote®CRF (Turfcare market), Horti-Cote®CRF (Substrate market) and Field-Cote®CRF ( Fieldgrown market). Our CRF products have only one variable, “temperature” in the nutrient release. With this quality we have more control of release in our cultivations as we have more variables such as moisture. In our Horti-Cote®CRF and Field-Cote®CRF the trace elements are coated, so they have a controlled release during the longevity of the total CRF product. In some cases, we can produce specific products on customer demand. Figure 1 Working Mivena-CRF coating -Urea products Most reliable and stable release on the marketWe can proudly say, that the Mivena coating technology has proven itself, to be very reliable over the last 2 decades. In particular, the stable, safe, high-end release curve is what sets Mivena products as Horti-Cote Plus, Field-Cote CRF and Granucote CRF apart from other products in the market. A quality of Mivena’s coatings technology is, that it does not react excessively to temperature increases. That makes the product very safe, due to the not high start, to use in multiple circumstances even at higher doses. Our partners such as trail centers, laboratories and field trials are an important link in our success. Biodegradable coatingIn addition to the release of the coating, we also have to look at environmental aspects, such as degradability of the coating. Our Mivena coating is a fully biodegradable coating and consists organic components. We are currently actively working on further optimizing of the coating regarding degradability. This puts us on track for the new EU regulations on degradability for 2024. As it stands now, all coated fertilizers registered in the EU must meet the requirement in 2024: Mivena is an RHP-certified company for almost 10 years nowRHP has been the European knowledge centre for growing media since 1963. RHP certified substrates provide an optimal start of the culture. With the RHP quality mark you increase the security, that the substrate complies with the quality requirements concerning for instance water uptake, air content, pH, EC and nutrients. It also offers more security, that the substrate is clean and that it can be used without risks for the culture. The RHP quality mark monitors the quality of growing media in the chain, from raw materials production until processing and delivery at the company of the user. Mivena is an RHP-certified company for substrate products, as Horti-Cote Plus CRF. For more information or questions, contact your Mivena contact person or distributor in your area.

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Mivena controlled release fertilizers-CRF

We as Mivena use one high quality biodegradable coating for our controlled release fertilizer brands as Granucote®CRF (Turfcare market), Horti-Cote®CRF (Substrate market) and Field-Cote®CRF ( Fieldgrown market). Our CRF products have only one variable, “temperature” in the nutrient release. With this quality we have more control of release in our cultivations as we have more variables such as moisture.

In our Horti-Cote®CRF and Field-Cote®CRF the trace elements are coated, so they have a controlled release during the longevity of the total CRF product. In some cases, we can produce specific products on customer demand.

Figure 1 Working Mivena-CRF coating -Urea products

Most reliable and stable release on the market
We can proudly say, that the Mivena coating technology has proven itself, to be very reliable over the last 2 decades. In particular, the stable, safe, high-end release curve is what sets Mivena products as Horti-Cote Plus, Field-Cote CRF and Granucote CRF apart from other products in the market.

A quality of Mivena’s coatings technology is, that it does not react excessively to temperature increases. That makes the product very safe, due to the not high start, to use in multiple circumstances even at higher doses. Our partners such as trail centers, laboratories and field trials are an important link in our success.

Biodegradable coating
In addition to the release of the coating, we also have to look at environmental aspects, such as degradability of the coating. Our Mivena coating is a fully biodegradable coating and consists organic components.

We are currently actively working on further optimizing of the coating regarding degradability. This puts us on track for the new EU regulations on degradability for 2024. As it stands now, all coated fertilizers registered in the EU must meet the requirement in 2024:

  • The polymer is able to physically and biologically decompose in natural soil conditions and aquatic environments across the Union. Carbon dioxide, biomass and water should be the only product left after decomposition;
  • The conversion of organic carbon into carbon dioxide should be at least 90% in a maximum period of 48 months after the end of the indicated functionality period of the EU fertilizing product, and as compared to an appropriate standard in the biodegradation test;
  • The use of polymers does not result in accumulation of plastics in the environment.

Mivena is an RHP-certified company for almost 10 years now
RHP has been the European knowledge centre for growing media since 1963. RHP certified substrates provide an optimal start of the culture. With the RHP quality mark you increase the security, that the substrate complies with the quality requirements concerning for instance water uptake, air content, pH, EC and nutrients. It also offers more security, that the substrate is clean and that it can be used without risks for the culture. The RHP quality mark monitors the quality of growing media in the chain, from raw materials production until processing and delivery at the company of the user.

Mivena is an RHP-certified company for substrate products, as Horti-Cote Plus CRF.

For more information or questions, contact your Mivena contact person or distributor in your area.

The post Mivena-CRF: Consistently Most Reliable CRF-Coating on the Market appeared first on Mivena | Specialty fertilizer company.

]]> https://mivena.nl/mivena-crf-consistently-most-reliable-crf-coating-on-the-market/feed/ 0 A STAR IS BORN: Granuform 16+0+22+2MgO+4 Si https://mivena.nl/granuform-160222mgo4-si/ https://mivena.nl/granuform-160222mgo4-si/#respond Fri, 10 Jun 2022 11:17:00 +0000 https://mivena.nl/?p=1468 MIVENA has launched a new product from its Granuform line: 16+0+22+2MgO+4Si. It has all the quality nutrients of our well-known SRF family, but we have added a special ingredient: Silica(Si). The presence of Silica improves the strength and structure of the plant’s cells, aiding in disease protection. The increase in cellular structure gives the green a faster speed. Silica, also prevents the plant from losing essential nutrients, that can cause leaching deeper down in the soil. Helps reduce foliar disease pressure on turf, as well as improve turf quality. Increases the resilience of the lawn and the quality of mowing. Increases the health of the lawn and improves the cellular structure of the plant. More advantages Highly recommended for greens!! For more information or questions, contact your Mivena contact person or distributor in your area.

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MIVENA has launched a new product from its Granuform line: 16+0+22+2MgO+4Si. It has all the quality nutrients of our well-known SRF family, but we have added a special ingredient: Silica(Si).

The presence of Silica improves the strength and structure of the plant’s cells, aiding in disease protection. The increase in cellular structure gives the green a faster speed. Silica, also prevents the plant from losing essential nutrients, that can cause leaching deeper down in the soil.

Helps reduce foliar disease pressure on turf, as well as improve turf quality. Increases the resilience of the lawn and the quality of mowing. Increases the health of the lawn and improves the cellular structure of the plant.

More advantages

  • Increases the resistance to trampling of the lawn and its traffic.
  • Increases the hardness of the leaf and stem.
  • Reduces the incidence of pathogens in the leaf and roots.
  • Reduces the incidence and development of Pyricularia “gray spot”.
  • Silica (Si) is taken up by the plant and transported through the xylem, being deposited on its walls and on the outer epidermal walls on both sides of the leaf. This creates a barrier to fungal infection.
  • It promotes the biosynthesis of lignin, increasing the elasticity of the cell wall during growth, thus improving the resilience of the leaf and the quality of mowing.

Highly recommended for greens!!

For more information or questions, contact your Mivena contact person or distributor in your area.

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]]> https://mivena.nl/granuform-160222mgo4-si/feed/ 0 The Role of Potassium (K) in Fertilizers https://mivena.nl/the-role-of-potassium-k-in-fertilizers/ https://mivena.nl/the-role-of-potassium-k-in-fertilizers/#respond Fri, 18 Jun 2021 10:22:00 +0000 https://mivena.nl/?p=1441 Potassium (K) is traditionally known as one of the three essential macronutrients in fertilizer, together with Nitrogen and Phosphorus (NPK). Today Calcium and Magnesium are also recognised as key elements, yet Potassium remains one of the most influential nutrients for plant performance. Although it does not build plant tissues, it regulates a wide range of physiological processes that determine growth, quality and resilience. Where Potassium Comes From? Potassium is a chemical element with the symbol K and is closely related to Sodium (Na). In its pure form it reacts immediately with oxygen. Historically, it was obtained from the ashes of burnt plant material. This origin explains the English name Potassium and the Latin word Kalium. Modern Potassium production relies on large underground salt deposits that were once ancient lakes or seas. The largest deposits are in Canada. Additional sources include evaporation-based extraction from the Dead Sea. After mining, the salts are separated and most Potassium ends up as Potassium Chloride (KCl), known as muriate of potash or MOP.   What is the role of K in fertilizers? Around 95 percent of all Potassium produced worldwide is used for plant nutrition. In plants the concentration of K usually varies between 0.5 and 2 percent of the dry weight. Potassium is not a building block like nitrogen or calcium. Instead it acts as a regulator of many key functions inside the plant. In general the plants Potassium makes plants “harder” by maintaining turgor pressure of cells, which keeps them from wilting.  Furthermore, Potassium plays an important role in proper functioning of stomata which control the “breathing” of plants. It regulates the opening and closing of stomata. These microscopic pores allow plants to absorb carbon dioxide and release water vapour. When K levels are adequate, stomata respond quickly to environmental changes. This results in: • Efficient photosynthesis• Improved water use• Better resilience under drought and heat How Potassium Moves Energy Through the Plant Potassium is essential for moving water, nutrients and sugars inside the plant. This movement supports strong roots, healthy leaves and good distribution of sugars toward flowers and fruits. Fruit size, flavour, colour and shelf life all rely on proper potassium supply. How Potassium Helps Build Plant Energy Potassium activates many of the enzymes that help form proteins, starch and energy compounds. When potassium is low the plant can still produce sugars, but it struggles to use them effectively. Growth becomes less efficient and the plant becomes more sensitive to stress. In practice, K-rich fertilizer is used by growers to make the plants harder and more resistant to stress such as cold and drought. Potassium is used by crop producers to enhance fruit-size, -quality and -flavor. In turf, K is used to make turf harder and more drought resistant.   Recognising Potassium Deficiency Potassium is mobile inside the plant which means deficiency symptoms first appear on older leaves. Typical signs include: • Yellowing or browning of leaf edges• Necrosis at advanced stages• Reduced vigour and slower growth• Increased sensitivity to drought, cold and disease In turf these symptoms appear as yellow leaf tips, reduced density and weaker recovery after wear or damage.   How does Mivena apply K? Mivena works in many segments ranging from high-end golf courses in Southern Europe to soft-fruit growers in Eastern Europe and public sports fields in Scandinavia. Each sector has different application strategies, yet several principles apply universally. Balance of N and K Throughout the Growth Cycle At the beginning of growth plants usually require more nitrogen. During the mid growth phase the balance moves toward N and K in equal proportion. Toward the end of the cycle the demand for potassium increases. The exact timing depends on the crop and the environmental conditions. Balance of N and K Throughout the Growth Cycle At the beginning of growth plants usually require more nitrogen. During the mid growth phase the balance moves toward N and K in equal proportion. Toward the end of the cycle the demand for potassium increases. The exact timing depends on the crop and the environmental conditions.   Potassium Use in Turfgrass Management In turfgrass the need for Potassium rises in early summer when the grass must withstand heat, drought and wear. During autumn and winter turf also benefits from higher K levels to endure cold conditions. Recommended N to K ratios in turf commonly range between 1:1 and 1:2. Why Mivena Does Not Recommend Potassium Nitrate in Autumn and Winter Some customers request Potassium Nitrate (KNO₃) for late season applications. This is not ideal because: • The longevity of KNO₃ is very short• Nitrate-based nitrogen produces soft and disease-prone growth in cold seasons• There is a higher risk of nutrient leaching• Turf becomes more sensitive to fungal pressure Potassium Sulphate is preferred in colder months due to its slower release pattern, lower salt impact and more stable interaction with Ca and Mg. Coated Potassium Nitrate can be useful in nurseries for release periods longer than four months. For turf it is generally not cost efficient. Standard Potassium Sulphate provides a similar release window of approximately three to four months.   Potassium in Nurseries and Soft-Fruit Production Ornamental Nurseries Potassium influences compactness, strength and plant habit. Growers often use Horticote Plus during substrate mixing and Horticote Topdress for additional nutrient supply during the crop cycle. Soft-Fruit and Fruit Growers Potassium plays a major role in fruiting crops. It affects flowering, fruit set, size, colour, sugar levels and firmness. Growers often increase K to achieve N to K ratios of 1:3 or 1:4, especially through fertigation using Granusol or Granufert high K formulas.   Mivena products with high K: Granucote CRF 12-5-24Especially suited for fairways. Will be applied in September/October with durations to last until February/March of the next year. Greenstar CRF 15-0-22A slightly coarser granule than Granucote and only available in 3M durations. Is often used in Fairways and Roughs, but also in landscaping and garden maintenance. Granuform SRF 16-0-22 / 19-0-19 / 19-5-17Very small granule, extremely suitable for Tees and

The post The Role of Potassium (K) in Fertilizers appeared first on Mivena | Specialty fertilizer company.

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Potassium (K) is traditionally known as one of the three essential macronutrients in fertilizer, together with Nitrogen and Phosphorus (NPK). Today Calcium and Magnesium are also recognised as key elements, yet Potassium remains one of the most influential nutrients for plant performance. Although it does not build plant tissues, it regulates a wide range of physiological processes that determine growth, quality and resilience.

Where Potassium Comes From?

Potassium is a chemical element with the symbol K and is closely related to Sodium (Na). In its pure form it reacts immediately with oxygen. Historically, it was obtained from the ashes of burnt plant material. This origin explains the English name Potassium and the Latin word Kalium.

Modern Potassium production relies on large underground salt deposits that were once ancient lakes or seas. The largest deposits are in Canada. Additional sources include evaporation-based extraction from the Dead Sea. After mining, the salts are separated and most Potassium ends up as Potassium Chloride (KCl), known as muriate of potash or MOP.

 

What is the role of K in fertilizers?

Around 95 percent of all Potassium produced worldwide is used for plant nutrition. In plants the concentration of K usually varies between 0.5 and 2 percent of the dry weight. Potassium is not a building block like nitrogen or calcium. Instead it acts as a regulator of many key functions inside the plant.

In general the plants Potassium makes plants “harder” by maintaining turgor pressure of cells, which keeps them from wilting. 

Furthermore, Potassium plays an important role in proper functioning of stomata which control the “breathing” of plants. It regulates the opening and closing of stomata. These microscopic pores allow plants to absorb carbon dioxide and release water vapour. When K levels are adequate, stomata respond quickly to environmental changes. This results in:

• Efficient photosynthesis
• Improved water use
• Better resilience under drought and heat

How Potassium Moves Energy Through the Plant

Potassium is essential for moving water, nutrients and sugars inside the plant. This movement supports strong roots, healthy leaves and good distribution of sugars toward flowers and fruits. Fruit size, flavour, colour and shelf life all rely on proper potassium supply.

How Potassium Helps Build Plant Energy

Potassium activates many of the enzymes that help form proteins, starch and energy compounds. When potassium is low the plant can still produce sugars, but it struggles to use them effectively. Growth becomes less efficient and the plant becomes more sensitive to stress.

In practice, K-rich fertilizer is used by growers to make the plants harder and more resistant to stress such as cold and drought. Potassium is used by crop producers to enhance fruit-size, -quality and -flavor. In turf, K is used to make turf harder and more drought resistant.

 

Recognising Potassium Deficiency

Potassium is mobile inside the plant which means deficiency symptoms first appear on older leaves. Typical signs include:

• Yellowing or browning of leaf edges
• Necrosis at advanced stages
• Reduced vigour and slower growth
• Increased sensitivity to drought, cold and disease

In turf these symptoms appear as yellow leaf tips, reduced density and weaker recovery after wear or damage.

 

How does Mivena apply K?

Mivena works in many segments ranging from high-end golf courses in Southern Europe to soft-fruit growers in Eastern Europe and public sports fields in Scandinavia. Each sector has different application strategies, yet several principles apply universally.

Balance of N and K Throughout the Growth Cycle

At the beginning of growth plants usually require more nitrogen. During the mid growth phase the balance moves toward N and K in equal proportion. Toward the end of the cycle the demand for potassium increases. The exact timing depends on the crop and the environmental conditions.

Balance of N and K Throughout the Growth Cycle

At the beginning of growth plants usually require more nitrogen. During the mid growth phase the balance moves toward N and K in equal proportion. Toward the end of the cycle the demand for potassium increases. The exact timing depends on the crop and the environmental conditions.

 

Potassium Use in Turfgrass Management

In turfgrass the need for Potassium rises in early summer when the grass must withstand heat, drought and wear. During autumn and winter turf also benefits from higher K levels to endure cold conditions. Recommended N to K ratios in turf commonly range between 1:1 and 1:2.

Why Mivena Does Not Recommend Potassium Nitrate in Autumn and Winter

Some customers request Potassium Nitrate (KNO₃) for late season applications. This is not ideal because:

• The longevity of KNO₃ is very short
• Nitrate-based nitrogen produces soft and disease-prone growth in cold seasons
• There is a higher risk of nutrient leaching
• Turf becomes more sensitive to fungal pressure

Potassium Sulphate is preferred in colder months due to its slower release pattern, lower salt impact and more stable interaction with Ca and Mg.

Coated Potassium Nitrate can be useful in nurseries for release periods longer than four months. For turf it is generally not cost efficient. Standard Potassium Sulphate provides a similar release window of approximately three to four months.

 

Potassium in Nurseries and Soft-Fruit Production

Ornamental Nurseries

Potassium influences compactness, strength and plant habit. Growers often use Horticote Plus during substrate mixing and Horticote Topdress for additional nutrient supply during the crop cycle.

Soft-Fruit and Fruit Growers

Potassium plays a major role in fruiting crops. It affects flowering, fruit set, size, colour, sugar levels and firmness. Growers often increase K to achieve N to K ratios of 1:3 or 1:4, especially through fertigation using Granusol or Granufert high K formulas.

 

Mivena products with high K:

    • Granucote CRF 12-5-24
      Especially suited for fairways. Will be applied in September/October with durations to last until February/March of the next year.

    • Greenstar CRF 15-0-22
      A slightly coarser granule than Granucote and only available in 3M durations. Is often used in Fairways and Roughs, but also in landscaping and garden maintenance.

    • Granuform SRF 16-0-22 / 19-0-19 / 19-5-17
      Very small granule, extremely suitable for Tees and Greens. Will give enough nutrients for 2-3 months.

    • Granusports SRF 8-0-26 / 19-5-17 / 19-0-19
      Similar to Granuform except a larger granule. Is more suited for sports fields and some tees. Will also give enough nutrients to turf for 2-3 months.

    • Horticote Plus CRF 14-10-18 + Traces
      Available in 4-6-8-12 Month durations. 100% coated NPK granules, very suitable for mixing in substrates for longer grow-periods.

    • Horticote Topdress 14-7-20 + Traces
      Partly coated fertilizers used to apply on pots where the plant is already established. Suitable for nurseries that need to give a little extra dose of fertilizers to generally larger pot-sizes

    • Granusol WSF 10-10-30 / 12-7-25 / 4,5-11-36
      Highly soluble crystalline powder that is suitable for any form of irrigation. All formulas contain a high dose of trace-elements and Mivena’s special vitamin mixture with many benefits that improve plant vitality, health and nutrient uptake

    • Granufert WSF 6-8-30 / 10-5-23 / 13-6-24
      Highly soluble powder that is most suitable for fertigation systems. Some products contain additional CaO for improved fruits

Conclusion

Potassium is far more than an add-on nutrient. It is a central regulator of plant physiology and directly influences:

• Photosynthesis efficiency
• Water management and stress tolerance
• Fruit size, quality and flavour
• Compactness and strength in ornamentals
• Turf resilience, density and recovery

For growers, greenkeepers and agronomists, Potassium is one of the most strategic levers in any fertilization plan. Choosing the right K source at the right time and in the correct balance with other elements is essential for achieving high performance in any crop or turf situation.

Stefan Hoefnagel – Technical commercial responsible at Mivena

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