The short answer: apply 2 litres of liquid biofertilizer per acre through drip, in 200 litres of non-chlorinated water, in the evening or early morning — and never within 7 days of a soil-applied fungicide. This guide gives the exact fertigation dose, schedule and the five mistakes that destroy live microbes before they reach the root zone.

For a one-acre banana plantation, apply 100 g of Mycorrhiza VAM powder at planting plus 2 litres of NPK Consortia through drip every 45 days. Total biofertilizer cost works out to roughly ₹440 per acre per cycle, and typically replaces 25-30% of your chemical NPK bill.