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Which fertilizers are suitable for foliar dressing
Foliar fertilizers, also known as leaf fertilizers or foliar nutrient solutions, are specially formulated to be applied directly onto the leaves of plants. These products are designed to provide essential nutrients quickly and efficiently, often used as a supplement to soil fertilization. Based on their composition, they can be categorized into several types, including nitrogen-based fertilizers, phosphate fertilizers, potash fertilizers, compound fertilizers containing both phosphorus and potassium, NPK blends, micronutrient fertilizers, rare earth fertilizers, and those combined with plant growth regulators.
In vegetable cultivation, common foliar fertilizers include urea, potassium sulfate, superphosphate, potassium dihydrogen phosphate, borax, ammonium molybdate, zinc sulfate, rice vinegar, sucrose, rare earth microelement fertilizers, and ash leaching solution. These formulations are typically stable and less likely to cause leaf burn or damage when applied correctly. They offer a fast-acting way to address nutrient deficiencies and improve plant health, especially during critical growth stages.
Additionally, foliar feeding can enhance photosynthesis, increase resistance to pests and diseases, and improve overall crop quality. It is particularly useful in situations where root absorption is limited, such as in waterlogged soils or during periods of drought. However, it's important to follow recommended application rates and timing to avoid over-fertilization and ensure optimal results. Always test on a small area first and consult local agricultural guidelines for best practices.