Dinesh Panwar*, D. Singh, Kuldeep and Priyanka Kumawat
Department of Agronomy, Rajasthan College of Agriculture,
Maharana Pratap University of Agriculture and Technology, Udaipur (Rajasthan) – 313 001
Email: mail2devhingra@gmail.com
Received-04.03.2017, Revised-14.03.2017
Abstract: An experiment was conducted at the Instructional Farm, Rajasthan College of Agriculture, during kharif 2012. To study the effect of different fertility levels on nutrient uptake and nutrient status in soil nutrients after the harvest and yields of crop. Four fertility levels i.e. control, 50, 75 and 100% RDF (recommended dose of fertilizers; 80 kg N+40kg P2O5 +40kg K2O ha-1) and 6 elite sorghum genotypes (SPH 1674, SPH 1680, SPV 2083, CSH 16, CSH 25 and CSV 23) were compared in a factorial randomized block design. Maximum nitrogen uptake by grain, maximum protein uptake by grain, as well as fodder, with genotype SPH 1674. CSV 23 recorded maximum phosphorus uptake (22.66 ha-1) by fodder. Results showed that application of 100 % RDF gave significantly higher grain, fodder and biological yields over 50 % and control.Significantly increased available N, P & K contents in soil after harvest the sorghum crop over control.CSV 23 and SPV 2083 recorded significantly maximum available N, P and K in soil after harvest over rest of the genotypes.SPH 1674 recorded significantly higher grain yield (61.94 q ha-1) and harvest index (34.48 %) than other genotypes.
Keywords: Fertility levels, Genotypes, Nutrient uptake, Available soil after harvest, Yield
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