PRODUCTIVITY, QUALITY AND SOIL HEALTH AS INFLUENCED BY ORGANIC, INORGANIC AND BIOFERTILIZER ON FIELD PEA IN EASTERN HIMALAYA

A field experiment was conducted during two consecutive years of 2010-2011 and 2011-2012 to study the effect of biofertilizers in conjunction with organic and inorganic sources of nutrient management on productivity, quality and soil health on field pea at ICAR RC for NEH Region, Nagaland Centre Jharnapani, Nagaland, India. The experiment was laid out in split plot design with five nutrient sources in main plots and four treatment of biofertilizers with zinc in sub plots. Results indicated that the application of 100% recommended dose of fertilizer (RDF) through inorganic + 50% recommended dose of nitrogen (RDN) through vermicompost significantly improved root nitrogen (N) content, cation exchange capacity (CEC) of roots, NA activates, seed yield (1153 and 1262kg ha(-1)), straw yield (2182 and 2332kg ha(-1)) in the year of 2010-2011 and 2011-2012, respectively. Nutrients (N, P, K, S and Zn) uptake by seed and straw, protein content, protein harvest, soil organic carbon (SOC), available N, P, K, S, Zn and economics significantly higher with 100% RDF through inorganic + 50% RDN through vermicompost during both the years. Seed inoculation with biofertilizers along with 5kg Zn ha(-1) markedly enhanced the root N content, CEC of roots, nitrogenase activities (NA), seed yield (1080 and 1193kg ha(-1)), straw yield (1978 and 2128kg ha(-1)), nutrients [N, phosphorus (P), potassium (K), sulfur (S) and zinc (Zn)] uptake, soil organic carbon (SOC) (%), and available N, P, K, S, and Zn of pea in both the years, respectively. These sources also give more income and benefit cost ratio per rupees invested.