JOURNAL of Soil Biology and Ecology 

Effect of nutrient management practices through organic manures on productivity of field pea (Pisum sativum L.)

Author : KEVAL KUMAR, H.L. SONBOIR, L.K. SHRIVASTAVA, TAPAS CHOWDHURY AND R.R. SAXENA

Abstract :

The field experiment was conducted at Agriculture Instructional cum Research Farm IGKV, Raipur (C.G.), during the rabi season of 2020-21. The experiment was assessed with three replications in Randomized Block Design. The experiment consisted of 11 different treatments. Field pea was a test crop, and the variety was Paras. The crop was grown organically under irrigated conditions after the harvest of rice. The treatment consisted of different sources of nutrient management in organic field pea viz. T1- Control, T2- 10% Cow urine spray twice at pre-flowering and pod initiation stage, T3- 50% RDN through vermicompost, T4- 50% RDN through vermicompost + 10% cow urine spray, T5- 75% RDN through vermicompost, T6- 75% RDN through vermicompost + 10% cow urine spray, T7- 100% RDN through vermicompost, T8- 100% RDN through vermicompost + 10% cow urine spray, T9- 100% RDN through (FYM, vermicompost, neem cake), T10- 100% RDN through FYM, vermicompost, neem cake + 10% cow urine spray, T11- 100% RDN through inorganic fertilizer 20:50:30 kg NPK ha-1. In 100% RDN, manure was applied equivalent to 20 kg N ha-1. The result revealed that applying 100% RDN through inorganic fertilizer produced the maximum value of growth, yield attributes, seed yield (1431 kg ha-1) and stover yield (2237 kg ha-1). However, the seed yield of field peas was statistically at par with the application of 100% RDN through vermicompost + 10% cow urine (1303 kg ha-1) and 100% RDN through FYM, vermicompost, neem cake + 10% cow urine (1318 kg ha-1). Spraying of 10% cow urine twice at pre-flowering and pod initiation stages increased the seed yield of field peas from 8.59 to 9.83 % at 75% to 100% RDN supplied through organic manure. The highest net realization (42249 Rs ha-1) and benefit-cost ratio (2.58) was obtained under 100% RDN through inorganic with significant differences to others. Among the organic sources of nutrient management, the higher net realization was noted under 100% RDN (FYM, V.C.,NC) + 10% cow urine (34112 Rs ha-1), 100% RDN through vermicompost + 10% cow urine (33302 Rs ha-1) and 75% RDN through vermicompost + 10% cow urine (32105 Rs ha-1). Increasing organic seed price by 19.25 per cent would make comparable net realization into inorganic nutrient management.

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