Effect of fertility levels on Yield and Yield attribute of different Sorghum [Sorghum bicolar (L.) Moench] genotypes

Abstract

A field experiment was conducted at Udaipur in calcareous soil during kharif 2016 to study the effect of fertility levels on the yield and yield attributes of grain sorghum genotypes. Soil of experimental field was calcareous in nature. It was medium in available nitrogen (296.50 kg ha-1), phosphorus (20.80 kg ha-1) and high in available potassium (355.60 kg ha-1). The experiment consisted of 15 treatment combinations comprising five genotypes (SPV 2293, SPV 2308, SPV 2307, CSV 17 and CSH 14 with three levels of fertility (75, 100 and 125 % RDF) laid out in factorial randomized block design and replicated thrice. Results showed that among the fertility levels 125 % and 100 % RDF significantly enhanced the grain weight panicle-1 over 75 % RDF. However, 100 % and 125 % fertility levels were found at par with each other. Fertility levels failed to show any significant variation in number of panicles m-2. Application of 125 % RDF provided significantly higher 1000-grain weight, grain, stover and biological yields over 75 % and 100 % RDF. However, harvest index was found non- significant to different fertility level. The genotypes did not show significant variation in number of panicle m-2. CSH 14 recorded maximum grain weight panicle-1 (34.05 g) which was statistically superior over rest of the genotypes but at par with CSV 17. CSH 14 recorded maximum 1000-grain weight which was significantly superior over SPV 2293 and SPV 2307 but found at par with CSV 17 and SPV 2308. csh 14 exhibited significant superiority in terms of grain yield (4230 kg ha-1) and harvest index (32.53 %) was reported higher in CSV 17, however highest stover yield (12707 kg ha-1) and biological yield (15940 kg ha-1) were recorded in SPV 2293.