Performance of Wheat Varieties as Influenced by Organic and Chemical Sources of Nitrogen under Semi-Arid Environment

The field experiment was conducted at Research Farm, Department of Agronomy, at CCS Haryana Agricultural University, Hisar during Rabi seasons 2017-18 with the objective to study performance of wheat varieties as influenced by nutrient sources of nitrogen under semi-arid environment in split plot design with three replications. In the main plots there were five wheat varieties (WH-1105, WH-1142, HD-3086, HD-2967 and DBW-88) and in sub plots there were different nitrogen source namely 100 RDN through inorganic source (urea) , 100 per cent RDN through organic source (vermicompost) and 50 per cent RDN through inorganic + 50 per cent RDN through organic source. The variety WH-1105 produced significantly taller plant with higher dry matter accumulation per meter row length and grain yield over other varieties but did not differ significantly with variety HD-3086. Combined application of 50 per cent RDN through inorganic source + 50 per cent RDN through organic source had significantly improved the growth component viz. plant height and dry matter accumulation over 100 per cent RDN organic source but did not differ significantly with 100 per cent RDN through inorganic. Significantly higher grain yield was obtained with 100 per cent RDN through inorganic source over 100 per cent RDN through organic source but it was statistically at par with 50 per cent RDN through inorganic + 50 per cent RDN through organic source. The grain yield increased under the 100 per cent RDN through inorganic source by 29.1, 8.2 % over 100 RDN through organic source and 50 per cent RDN through inorganic + 50 per cent RDN through organic source, respectively.