Effect of sources of nutrients on black gram
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Date
2019
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CCSHAU
Abstract
A field experiment entitled “Effect of sources of nutrients on black gram” was conducted at Research Farm, Department of Agronomy, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana during kharif 2018. The experiment was laid down in randomized block design with three replications. The treatments were: T1: Control, T2: 100% RDF, T3: 100% N through FYM, T4: 100% N through vermicompost, T5: 50% RDF + 50 % N through FYM, T6: 50% RDF + 50% N through vermicompost, T7: 1/3 N through FYM + 1/3 N through vermicompost + 1/3 N through neem cake, T8: 75% RDF + Rhizobium + PSB, T9: 50% RDF + Rhizobium + PSB, T10: 50% FYM + Rhizobium + PSB, T11: Jeevamrit @75 l/ha + Beejamrit (seed treatment) + Ghanjeevamrit @250 kg/ha. Plant population remained unaffected with different sources of nutrients. Treatments did not produce any significant effect on plant height at 30 DAS. However, plant height was significantly higher under 100% RDF which remained at par with 75% RDF + Rhizobium + PSB both at 45 DAS and at harvest. Branches per plant, dry matter accumulation was recorded significantly higher under 100% RDF which remained at par with 75% RDF + Rhizobium + PSB. SPAD chlorophyll content was higher under T2 which remained at par with T8 and T9. However, canopy temperature remained unaffected with different treatments. Yield attributes viz., no. of pods/plant, no. of seeds/pod were significantly higher under application of 100% RDF which remained at par with 75% RDF + Rhizobium + PSB. Test weight was found non – significant with different sources of nutrients. Highest biological yield, stover yield and seed yield was obtained under T2 (100% RDF) which remained at par with T8 (75% RDF + Rhizobium + PSB). Residual nitrogen in soil was reported higher under 1/3 N through FYM + 1/3 N through vermicompost + 1/3 N through neem cake. Highest available phosphorus was reported in T8 which remained at par with T9 (50% RDF + Rhizobium + PSB) and T10 (50% FYM + Rhizobium + PSB). Moreover, available potassium remained non- significant with different sources of nutrients. Highest net returns (Rs. 32779 ha-1) and B:C (2.15) was obtained under 100% RDF whereas, net returns (Rs. 30821 ha-1) and B:C (2.10) was recorded in T8.
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