Magnesium is the core component of crop chlorophyll molecules and an activator of hundreds of metabolic enzymes in plants. It directly participates in photosynthesis, sugar conversion, protein synthesis and energy transfer. Magnesium deficiency in crops will directly lead to decreased photosynthetic efficiency, slow growth, reduced yield and deteriorated quality.

After being applied to soil, common inorganic magnesium fertilizers such as magnesium sulfate heptahydrate are easily fixed by soil colloids into insoluble compounds, with an actual crop utilization rate of less than 15%. With its stable chelated structure, EDTA chelated magnesium greatly improves the bioavailability of magnesium: effects can be seen 3-5 days after foliar spraying, and magnesium deficiency chlorosis symptoms can be effectively relieved 7-10 days after soil application.

In addition to correcting nutrient deficiency, EDTA magnesium can also promote crop root development and enhance root absorption of nutrients such as phosphorus and silicon. It increases vitamin C and soluble sugar content in fruits, improving the flavor and commercial value of fruits and vegetables. Meanwhile, it enhances crop tolerance to adversities such as low temperature and drought, reduces premature leaf senescence and extends leaf functional period, making it an essential nutrient input for high-yield and high-quality planting.