Integrated Nutrient Management in Barley Hordeumvulgare L

Abstract

newline A field experimententitled Integrated Nutrient Management in Barley (HordeumvulgareL.) was conducted on clay loam soilhaving low in available nitrogen (287.60 to 288.30 kg ha-1), medium in available phosphorus (18.80 to 20.50 kg ha-1) and high in available potassium status (338.70 to 346.40 kg ha-1) with slightly alkaline in reactionat the Instructional Farm, Department of Agronomy, Rajasthan College of Agriculture, MPUAT, Udaipur during the rabi season 2017-18 and 2018-19with the objective to evaluate the effect of integrated nutrient management on productivity of barley. The experiment was laid out in randomized block design (Factorial) withcomprised combinations of sixfertility levels and fourliquid bio inoculants. newlineThe barley crop fertilized with 125% RDF in conjunction with 5 t FYM ha-1significantly enhanced plant height, dry matter accumulation at successive growth stages, dry matter partitioning at harvest, number of tillers, chlorophyll content and growth efficiency which was found at par with application of 100% RDF + 5 t FYM ha-1(exceptplant height) over rest of fertility levels during both years. These improvement manifested in the production of higher effective tillers, ear length, ear weight, grains ear-1, grain weight ear-1, straw weight ear-1, filled spikelet ear-1and test weight with the concomitant increase in productivity in terms of grain, straw and biological yield. The magnitude of increase was to the tune of 42.46, 27.49, 32.95 and 38.90, 26.18, 30.80 per cent, respectively over the application of 75% RDF. Highest N, P and K concentration and accumulation also recorded under both these treatments in grain and straw thereby total uptake. Both 125% RDF + 5 t FYM ha-1 and 100% RDF + 5 t FYM ha-1 fetched net return of ` 66492 and 64933 with B-C ratio 2.15 and 2.14. The results showed that seed treatment withliquid bio-inoculants Azotobactor + Azospirillum + Phosphates solubilizer + PGPR significantly improved growth parameters viz.,plant height, dry matter accumulation at successi