Onion roots are shallow and sparse, so phosphorus uptake is the bottleneck. Seedling dip with Mycorrhiza VAM plus 1 L/acre NPK Consortia costs roughly ₹344–₹600 per acre.

Tomato biofertilizer plan for the rabi transplant: 10 ml/L seedling dip, 2-4 L per acre through drip, and a real cost of roughly Rs 230-380 per acre per application.