2024, Vol. 7, Issue 5, Part H

author(s)
Richa Yadav, Ravikesh Kumar Pal, Durgesh Kumar Maurya, Pushpendra Yadav, Aneeta Yadav, Raghvendra Singh and Naman Kumar

abstract
The present investigation entitled “Effect of different liquid bio fertilizers on growth and yield of black gram (Vigna mungo L.)” was carried out at Agronomy research farm of Rama University, Kanpur (U.P.) during Kharif, 2023-24. The nine treatments viz., T₁– Rhizobium @ 30 ml kg^-1 seed treatments, T₂- Rhizobium + ZMB @ 30 ml kg^-1 seed treatments each, T₃ - PSB + KMB @ 30 ml kg^-1 seed treatments each, T₄- Rhizobium + PSB + KMB @ 30 ml kg^-1 seed treatments each, T₅ - RDF N-25 Kg ha^-1, P-45 Kg ha^-1, K-0 Kg ha^-1, T₆ - NPK Consortia @ 30 ml kg^-1 seed treatments, T₇ - Rhizobium + PSB @ 30 ml kg^-1 seed treatments each, T₈ - Rhizobium + KMB @ 30 ml kg^-1 seed treatments each, T₉ – Control, were comprised in Randomized Block Design with three replication. The Type-9 was taken as test crop. Spacing between row to row and plant to plant were 30 and 10 cm, respectively. The values of growth contributing characters viz. plant population (no.), Number of trifoliate leaves plant^-1, Leaf area index (LAI), Crop Growth rate (CGR), Plant height, Dry matter accumulation (gm^-2), Number of branches plant^-1, Number of nodules plant^-1, Fresh weight of nodules plant^-1, Dry weight of nodules plant^-1 and yield attributes like number of pods plant^-1, number of seed pod^-1, Pod length (cm), Test weight (g), Seed yield (q ha^-1), Biological yield (q ha^-1), Harvest Index (%), N, P, K contents in seed and straw, N, P, K uptake in seed and straw, Protein content in seed and straw of crop were increasing significantly with (T4) Rhizobium + PSB + KMB @ 30 ml kg^-1 seed treatment each followed by RDF N-25 Kg ha^-1, P-45 Kg ha^-1, K-0 Kg ha^-1 seed treatment each and significantly superior over rest of the treatments. The highest gross return was recorded (Rs. ha^{- 1}84140) in Rhizobium + PSB + KMB @ 30 ml kg^-1 seed treatments each followed by Rs. ha^-1 79649 with Rhizobium + PSB @ 25 ml kg^-1 seed treatments each. Maximum net return of Rs. ha^{- 1} 56314 was received with the application Rhizobium + PSB + KMB @ 30 ml kg^-1 seed treatments each followed by Rhizobium + PSB @ 30 ml kg^-1 seed treatments each. Highest benefit cost ratio (2.02) was recorded Rhizobium + PSB + KMB @ 30 ml kg^-1 seed treatments each followed by Rhizobium + PSB @ 30 ml kg^-1 seed treatments each.