All plants need magnesium (Mg). Under optimum growing conditions, plants garner this magnesium from the soil. But magnesium availability can be hampered due to leaching, especially in sandy soils, or because of environmental conditions such as wet, cold, or an acidic root environment. An imbalance of nutrients in the soil, including high levels of potassium, calcium, or ammonia, can also restrict magnesium uptake by plants.
Nutrient Conversion Calculator
The Role of Magnesium in Crops
Magnesium is required to help plants to capture the sun’s energy for growth and production through photosynthesis. Photosynthesis takes place in chlorophyll, the green pigment in plants, and magnesium is the central atom of the chlorophyll molecule, with each chlorophyll molecule containing 6.7% magnesium.
Magnesium also plays a significant role in activating enzymes involved in respiration, photosynthesis, and nucleic acid synthesis. It aids in phosphate metabolism, serving as a carrier of phosphate compounds throughout the plant. Magnesium facilitates the translocation of carbohydrates (sugars and starches), enhances the production of oils and fats, and is necessary for cell division and growth.
Symptoms of Magnesium Deficiency
Magnesium-deficient plants show interveinal chlorosis (dark green veins with yellow areas between them) on their older leaves. These yellowed or chlorotic leaves develop spotted areas of dead tissue and the leaf edges curl. Since magnesium is mobile in the plant, the lower or older leaves are always affected first.
14 Brands found
29 Products found
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/11/28060252/Agroblen_NEUTRAL.png)
10-7-22+2MgO | 16-18M has a high K analysis enriched with Mg – perfect for the establishment and uniform growth of crops cultivated in tropical areas.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/28060419/Agroblen-M8-9_NEUTRAL.png)
11-21-9+6MgO | 8-9M is a high P analysis that promotes root development and crop establishment, enriched with a high level of Mg, it boosts photosynthesis of new young plants for improved and healthier growth.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/11/28083150/Agroblen-M12-14_NEUTRAL.png)
17-7-10+4MgO | 12-14M has a high N analysis enriched with Mg, making it ideal to be used for the establishment and uniform growth of both new plantation in the field and main nurseries of crops grown in sub-tropical areas.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/01091202/packshot_AG_Agroblen-17-8-93MgO_M16-18.png)
17-8-9+3MgO | 16-18M features a high N analysis enriched with Mg, so it’s perfect for the establishment and uniform growth of crops grown in tropical areas, such as oil palm seedlings.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/28083436/Agroblen-M8-9_NEUTRAL-1.png)
When spring has sprung, make sure your temperate and sub-tropical crops follow suit with Agroblen® 17-9-8+4MgO | 8-9M. This high-nitrogen granular NPK fertilizer has been specially formulated to help you establish your new temperate and sub-tropical plantations, such as avocados and citrus. With added magnesium for enhanced photosynthesis, this product is ideal for spring applications. Thanks to ICL’s patented Resin Release Technology, your plants can enjoy a controlled, sustained, and reliable 8-9 month nutrient release.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/12/28084205/Agroblen-M2-3_NEUTRAL.png)
18-5-10+2MgO | 2-3M features an analysis designed specifically for new plantations in strawberry and other soft fruit crops, it enables fast growth and establishment of crops and is ideal for row applications.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/12/28084404/Agroblen-M3-4_NEUTRAL.png)
18-5-11+2MgO | 3-4M has an analysis designed specifically for new plantations in strawberry and other soft fruit crops and it facilitates fast growth and crop establishment – plus it’s ideal for row applications.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/11/29085656/Agroblen-M5-6_NEUTRAL.png)
8-28-7+3CaO+3MgO+8.5SO3+0.5B | 5-6M is a high P analysis enriched with Ca, Mg, S, and a high level of B, especially designed for new forestry, orchard and vineyard plantations and ideal for planting hole applications.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/12/29090504/Agroblen-M8-9_NEUTRAL.png)
9-20-8+3MgO+0.1B | 8-9M has a high P analysis enriched with Mg and B for a strong root system and uniform growth – it’s designed especially for the plantation of new conifers and other crops in forestry and orchards and is ideal for planting hole applications.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/11/28082339/Agroblen-tablet-1.jpg)
14-20-5+2MgO+TE | 5-6M | 7.5 grams – Designed to deliver new plantations in spring a high NP analysis source of nutrition in a single application to develop a strong root system and well-balanced vegetative growth.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/11/28082339/Agroblen-tablet-1.jpg)
9-20-7+2MgO+13.5SO3+TE | 8-9M | 10 grams. A steady supply of precision nutrition for new plantations in spring or autumn that covers all your plants’ needs for the full crop cycle.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/12/24101001/packshot_AG_AgroBlenVFactor.png)
Featuring a new innovative combination of the resin coating technology plus the V-Factor organic growth enhancer for stronger root development, improved plant growth, better plant establishment and high survival rates.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/28060707/Agromaster-2.png)
Agromaster® 11-7-24+CaMgS consists of 61% coated N by ICL’s E-Max Release Technology. A multi-nutrient product featuring a high K analysis enriched with extra Ca, Mg and S, making it ideal for all kinds of crops with a medium-long crop cycle, especially those grown in light soils (for example, onions, carrots, potatoes, tomatoes, peppers and eggplant).
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/28060707/Agromaster-2.png)
Agromaster 12-12-22+3.7CaO+2MgO+13.5SO3 | 2-3M is a 41% coated N. A product with a typical 2-2-4 NPK ratio enriched with Ca, Mg and S and is the perfect for solution for crops that love potassium and are grown either in open fields or protected areas (for example, onions, carrots, potatoes, tomatoes, peppers and eggplant).
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/28060707/Agromaster-2.png)
Agromaster® 12-6-20+CaMgS consists of 41% coated N by ICL’s E-Max Release Technology. A multi-nutrient product providing a high K analysis enriched with extra Ca, Mg and S, making it perfect for all kinds of crops grown in protected areas or in open field with a medium-long crop cycle (for example, melon, soil-grown soft fruits, gherkins and eggplants).
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/28060707/Agromaster-2.png)
Agromaster 15-7-15+3MgO+34SO3 | 2-3M is a 30% coated N. A product with a well-balanced N-K analysis and 2-1-2 NPK ratio, plus extra Mg and S, which means it is ideal for all crops grown in open field or protected areas (such as leafy vegetables and mature vineyard and orchard plantations).
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/28060707/Agromaster-2.png)
Agromaster 16-8-16+5MgO+16SO3 | 5-6M has a 94% coated N / 82% coated P and K A high value Agromaster formulation enriched with magnesium, making it ideal for longer crop cycles of vegetable crops, while the high coating % of NPK makes it ideal for placement on spots, bed or by row application (for example, tomatoes, peppers and eggplant).
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/10/28060707/Agromaster-2.png)
22-10-10+4MgO+10SO3 | 5-6M is a 95% coated N / 51% coated P / 100% coated K product, which thanks to this valuable 2-1-1 NPK analysis enriched with a high level of Mg combines a high level of coated nutrients and adequate longevity for long crop cycles in open field or protected areas to create an essential buffer of nutrients leading to uniform growth and higher yields (for crops such as tomatoes, peppers and eggplants).
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/11/31191158/Agromaster-StartMini-8-32-05MgO.png)
This high P analysis combines a high level of coated N&P with extra Mg, S, and trace elements. Ideal for use in soils with low phosphorus, in low or high soil pH, to improve rooting and plant establishment.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/11/10144805/packshot_AG_AgromasterStartMini-21-21-5.png)
21-21-5+2MgO+15SO3 | 2-3M | 40% coated N High NP analysis enriched with Mg and S for soils with medium-high phosphorus to improve rooting and plant establishment.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/11/08152321/Render_Nova_Complex_Optima-removebg-preview.png)
Nova Complex Optima 10-5-30+31SO3+2MgO+TE is chloride-free, high in potassium, and minimizes the risk of nitrate leaching and maximizes nitrogen use plus the length of time it remains in your soil.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/12/24100611/packshot_AG_NovaComplex.png)
Nova Complex Optima 13-26-13+19SO3+2MgO+TE is a DMPP-based fertilizer that is rich in phosphorus and contains sulfur, magnesium, and micro elements (Fe-Zn-Mn).
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2021/12/24100611/packshot_AG_NovaComplex.png)
Nova Complex Optima 18-6-6+46SO3+2MgO+TE is nitrogen-rich, contains DMPP and includes sulfur, magnesium and chelated micro elements.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2022/06/24065043/Packshot-nutri-liquid-website-GS-2024.png)
An NPK liquid fertilizer with added calcium and magnesium. The efficient ready-made solution has a high nitrogen content.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2022/06/24065043/Packshot-nutri-liquid-website-GS-2024.png)
Nutri Liquid 3-2.1-5.7 PCl+2.7CaO+0.3MgO is a liquid fertilizer that delivers a gentle balance of five crucial macronutrients: NPK, plus calcium and magnesium.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2022/06/24065043/Packshot-nutri-liquid-website-GS-2024.png)
A liquid fertiliser pure in chloride for fertigation with a nitrification inhibitor, DMPP, which favours the greater permanence of nitrogen in the soil.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2022/06/24065043/Packshot-nutri-liquid-website-GS-2024.png)
Nutri Liquid Optima 6.8-2.3-4.5 PCl+4.3CaO+0.8MgO is a liquid fertiliser pure in chloride with DMPP that includes Nitrogen, Phosphorus, Potassium, Calcium and Magnesium.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2022/06/24065043/Packshot-nutri-liquid-website-GS-2024.png)
Nutri Liquid Optima 8.5-2.6-6.4-3 PCl+3CaO+1.3MgO is a liquid fertiliser pure in chloride with DMPP that includes Nitrogen, Phosphorus, Potassium, Calcium and Magnesium.
![](https://multisite-assets.icl-growingsolutions.com/wp-content/uploads/2022/06/24065043/Packshot-nutri-liquid-website-GS-2024.png)
Nutri Liquid Optima 9-3-3 PCl+4CaO+1MgO is a liquid fertiliser pure in chloride with DMPP that includes Nitrogen, Phosphorus, Potassium, Calcium and Magnesium.
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