Silica sol applied as foliar silicon fertilizer
Release date:
2025-07-22
In recent years, water-soluble silicon fertilizers have seen rapid development. Most of the currently available water-soluble silicon fertilizers are made from water glass (sodium silicate or potassium silicate) and are applied via foliar spraying. However, water glass as a silicon fertilizer has a significant drawback: it is highly alkaline, and improper use can easily lead to seedling burn and other damage. When used, it must be diluted thousands of times, which greatly reduces the effective silicon content in the dilution solution. Moreover, it cannot be mixed with other fertilizers, especially nitrogen fertilizers, thereby limiting the scope of its application. Consequently, the development of silicon sol-based silicon fertilizers has gradually emerged as a new technology for foliar silicon fertilizer applications. Silicon sol-based silicon fertilizers boast excellent characteristics, including high silicon nutrient content, a wide pH tolerance range (pH = 2–10), absence of harmful sodium ions, and the ability to be mixed with nitrogen fertilizers such as urea.
In recent years, water-soluble silicon fertilizers have seen rapid development. Most of the currently available water-soluble silicon fertilizers are made from water glass (sodium silicate or potassium silicate) and are applied via foliar spraying. However, water glass as a silicon fertilizer has a significant drawback: it is highly alkaline, and improper use can easily lead to symptoms such as seedling burn. When used, it must be diluted thousands of times, which greatly reduces the effective silicon content in the dilution solution. Moreover, it cannot be mixed with other fertilizers, especially nitrogen fertilizers, thereby limiting the scope of its application. Consequently, the development of silicon sol-based silicon fertilizers has gradually emerged as a new technology for foliar silicon fertilizer applications. Silicon sol-based silicon fertilizers boast excellent characteristics, including high silicon nutrient content, a wide pH tolerance range (pH = 2–10), the absence of harmful sodium ions, and the ability to be mixed with nitrogen fertilizers such as urea.
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