NPK 13:40:13 is a specialty water-soluble fertilizer featuring a phosphorus-dominant starter ratio. Designed to bridge the nutritional gap between early growth and reproductive onset, it provides sufficient nitrogen and potassium alongside a heavy phosphorus charge to satisfy intense metabolic demands during root extension and flowering preparation.
Total Nitrogen (N) 13% + Available Phosphorus (P₂O₅) 40% + Soluble Potassium (K₂O) 13%
Foliar Spray: 3–5 g per litre of water. Fertigation/Drip: 2–4 kg per acre during pre-flowering and peak vegetative phases.