Zinc Deficiency in Indian Soils: Causes, Symptoms & Solutions

Published on: 2026-05-12 | Author: Chakradhar Chemicals | Read time: 5 min read

India faces a significant challenge with zinc-deficient soils. Studies indicate that approximately 49% of Indian soils are deficient in zinc, making it the most widespread micronutrient deficiency in the country. This directly impacts food security, crop quality, and farmer livelihoods.

Causes of Zinc Deficiency

• High pH soils (alkaline and calcareous soils) reduce zinc availability.
• Continuous cropping without micronutrient replenishment depletes soil zinc.
• Excessive phosphorus fertilization interferes with zinc uptake.
• Sandy soils with low organic matter have poor zinc retention.
• Waterlogged conditions (common in rice paddies) reduce zinc solubility.

Identifying Zinc Deficiency in Crops

Visual symptoms include interveinal chlorosis (yellowing between leaf veins), stunted growth, small leaves, delayed maturity, and poor grain formation. In rice, a condition called 'khaira disease', characterized by dusty brown spots on leaves, is a classic sign of zinc deficiency.

Solutions: Zinc Sulphate Application

The most effective and economical solution is the application of Zinc Sulphate Monohydrate at 25 kg per hectare as a basal dose. For standing crops showing deficiency symptoms, foliar application of 0.5% Zinc Sulphate Heptahydrate solution provides quick correction within 7–10 days.

Trusted Supply from Chakradhar Chemicals

Since 1990, Chakradhar Chemicals has been supplying high-purity Zinc Sulphate to agricultural regions across India. Our products meet FCO (Fertilizer Control Order) specifications and are trusted by micronutrient formulators, state agricultural departments, and farmers nationwide.