The present investigation entitled “Development of Carrier-Based Biofertilizers and Their Agronomic Evaluation in Tomato and Turmeric” was undertaken to develop efficient carrier-based microbial formulations and evaluate their impact on crop growth, yield, quality parameters, and soil health. Efficient strains of nitrogen-fixing, phosphate-solubilizing, and plant growth–promoting microorganisms were isolated, mass multiplied, and incorporated into suitable carrier materials to enhance shelf life and field applicability. The prepared biofertilizer formulations were tested under field conditions in Tomato and Turmeric crops following recommended agronomic practices.

The results revealed that application of carrier-based biofertilizers significantly improved plant height, number of branches, chlorophyll content, and biomass production compared to control treatments. In tomato, enhanced fruit number, average fruit weight, and total yield per hectare were recorded. In turmeric, rhizome length, girth, fresh weight, dry recovery, and curcumin content showed notable improvement. Post-harvest soil analysis indicated increased availability of nitrogen, phosphorus, potassium, organic carbon content, and beneficial microbial population in treated plots.