Journal of Scientific Research and Reports

India is the 4^th largest producer of soybean in the world. It is also instrumental in bringing the yellow revolution to the country. Out of nine oilseeds grown, soybean alone contributes nearly 25% of domestic vegetable oil production. A field experiment was conducted to investigate the impact of bio-NPK along with zinc on the growth and yield of soybean in kharif  2023at Krishi Vigyan Kendra, Dhule. The field experiment consisted of eight treatments viz., T₁ (Absolute control), T₂ [GRDF (50:75:45 N: P₂O₅: K₂O kg ha^-1  + 10 t FYM  ha^-1)], T₃ (GRDF 100% + ZnSO₄ @ 20 kg ha^-1 and 4 ml bio-NPK consortia), T₄ (GRDF 100% + ZnSO₄ @ 20 kg ha^-1 and 6 ml bio-NPK consortia), T₅ (GRDF 100% + ZnSO₄ @ 20 kg ha^-1and 8 ml bio-NPK consortia), T₆ (GRDF 75% + ZnSO₄ @ 20 kg ha^-1and 4 ml bio-NPK consortia), T₇ (GRDF 75% + ZnSO₄ @ 20 kg ha^-1and 6 ml bio-NPK consortia), T₈ (GRDF 75% + ZnSO₄ @ 20 kg ha^-1 and 8 ml bio-NPK consortia) were replicated thrice under randomized block design.The significantly highest effective nodule count at 45 DAS (26.05), total chlorophyll content at 30 and 60 DAS (3.194 and 2.383 mg g^-1 respectively), number of pods plant^-1 (94.71), grain and straw yield (29.62 q ha^-1 and 44.43 q ha^-1, respectively) were observed in the treatment (T₅) which received GRDF 100% + ZnSO₄ @ 20 kg ha^-1and 8 ml bio-NPK consortia, followed by GRDF 100% + ZnSO₄ @ 20 kg ha^-1 and 6 ml bio-NPK consortia (T₄). The significantly highest B: C ratio (2.92) was recorded in treatment (T₅) received GRDF 100% + ZnSO₄ @ 20 kg ha^-1 and 8 ml bio-NPK consortia.