Zinc is a crucial micronutrient for crop growth and enzymatic regulations. The present study was formulated to reveal the effect of organic fortified Zn composite on growth and yield parameters of green gram in Typic chromustert at Vellakulam village, Kalligudi block, Madurai district of Tamil Nadu. A total of eight treatments with three replications were designed to grow in Randomized Block Design (RBD). The treatments consisted of recommend dose fertilizers (25:50:25 Kg ha-1 N: P2O5: K2O) + various sources organics applied such as vermicompost (1:5), poultry manure (1:5), biochar (1:5), FYM (1:10) incubated with ZnSO4 @ 25 kg ha-1 and Tamil Nadu Agricultural University micronutrient mixture enriched with FYM (1:10) for 30 days. Among the treatments, application of RDF (25:50:25 Kg ha-1 N: P2O5: K2O) + soil application of ZnSO4 @ 25 kg ha-1 incubated with 125 kg Vermicompost (1:5) recorded maximum plant height (64 cm), leaf area index (LAI) (3.11), dry matter production (16.33 g plant-1), pods plant-1 (28.46), grains pod-1 (13.5), test weight (3.48 g), seed yield (950 kg ha-1) and haulm yield (1520 kg ha-1) followed by biochar and TNAU MNM shown on par results with each other. The lowest yield parameters were spotted in absolute control. A considerable increase in yield (25 %) was detected when the crop was supplemented with organically fortified Zinc than the commercial ZnSO4. The study concluded that the application of biofortified Zn will deliver higher growth and yield in green gram.
Biofortification, Green gram, Vermicompost, Yield, Zinc
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