EDTA chelated calcium is fully water-soluble and fast-absorbing, and can be applied in various ways to adapt to different planting scenarios and crop growth stages:
Foliar Spray: Dilute by 1000-1500 times and spray evenly on both sides of leaves and young fruit surfaces. It is the preferred method for emergency correction of calcium deficiency. Apply mainly during fruit setting and fruit expansion stages, avoid high temperature at noon. It is recommended to combine with boron fertilizer to synergistically improve calcium absorption efficiency.
Drip Irrigation / Fertigation: Apply with irrigation water at a dosage of 1-2 kg per mu, suitable for large-scale planting such as fields, orchards and greenhouse vegetables. It can continuously provide active calcium to roots, improve rhizosphere calcium supply, and prevent growth stagnation caused by root calcium deficiency.
Hydroponics / Soilless Culture: Added according to nutrient solution formula, with a conventional concentration of 50-100mg calcium per liter of nutrient solution. It can prevent calcium and phosphate from forming precipitates in nutrient solution and blocking pipelines, ensuring calcium nutrition supply throughout the crop growth cycle. It is the standard calcium source for hydroponic systems.
Fertilizer Compounding: It can be compounded with macronutrient water-soluble fertilizers, amino acid fertilizers, humic acid fertilizers, etc. Avoid direct mixing with high-concentration phosphate and sulfate fertilizers to prevent precipitation caused by excessive local concentration.
EDTA calcium is widely applicable to solanaceous vegetables such as tomato, pepper and cucumber, fruit trees such as apple, citrus, grape and cherry, as well as berry crops such as strawberry and melon.
