Author(s):

Somdutt, LN Dashora, SL Mundra, J Choudhary and Piyush Choudhary

Abstract: A field experiment was laid out to study the effects of inorganic and organic sources of fertilization on growth, yield attributing characters and yield of fenugreek during rabi, 2017-18 at Instructional Farm of Agronomy, Rajasthan College of Agriculture, Udaipur (Raj.). The results revealed the superiority of 100% RDF brought significant improvements in various growth parameters viz., plant height, number of branches plant^-1, dry matter accumulation, CGR and RGR of fenugreek at successive growth stages of crop as well as at harvest. Number and weight of nodules plant^-1 were statistically higher under 75% RDF. These enhancements manifested in improvement in yield attributing characters viz. number of pods plant^-1, pod length, seeds pod^-1, seed weight plant^-1 and test weight, consequently increased seed (2218.7 kg ha^-1) and haulm yield (8932.5 kg ha^-1). The application of FYM 5 t ha^-1 + Rhizobium + PSB significantly improved plant height (92.2 and 94.0 cm) and dry matter accumulation (14.27 and 25.16 g plant^-1) at 90 DAS and at harvest, respectively. Significant improvement in number of nodules (11.9 and 30.2) and nodule weight plant^-1 (33.2 and 50.5 mg) was recorded under vermicompost 2.5 t ha^-1 + Rhizobium + PSB at 45 and 60 DAS, respectively. Yield attributes viz., number of pods plant^-1 (26.8) and pod length (10.7 cm) was significantly higher under FYM 5 t ha^-1 + Rhizobium + PSB. Seed weight plant^-1 (13.0 g) and seed yield (2141.9 kg ha^-1) significantly increased with application of vermicompost 2.5 t ha^-1 + Rhizobium + PSB. Significant improvement was recorded in number and weight of nodules plant^-1 with combined application of 75% RDF + vermicompost 2.5 t ha^-1 + Rhizobium + PSB at 45 and 60 DAS. Treatment combination 100% RDF + vermicompost 2.5 t ha^-1 + Rhizobium + PSB recorded significantly higher grain yield (2540.7 kg ha^-1), which was at par with 100% RDF + FYM 5 t ha^-1 + Rhizobium + PSB (2285 kg ha^-1). Among different treatment combinations the highest net return (` 70,781.15 ha^-1) was recorded under 100% RDF + vermicompost 2.5 t ha^-1 + Rhizobium + PSB and highest BC ratio (1.96) was recorded under Rhizobium + PSB.

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