Yield, Quality, Nitrogen Use efficiency (NUE) and Water Use efficiency (WUE) of Indian Mustard [Brassica juncea (L.) Czern & Coss] as Influenced by Irrigation and Nitrogen Levels

A field experiment was conducted during rabi season of 2017-18 at Central Research Farm, Gayespur, Nadia, under Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal to assess the effect of irrigation and nitrogen levels on performance of hybrid mustard. The experiment was comprised of nine treatment combinations in split plot design with replicated thrice. The results revealed that, maximum seed yield (2016 kg/ha) was achieved in IW/CPE=1.0 with 120 kg nitrogen/ha followed by IW/CPE=1.2 with the same dose of nitrogen/ha. The highest value of oil percentage (40.2%) was noticed in IW/CPE=1.2 with application of 80 kg N/ha followed by IW/CPE=1.0 and same dose of nitrogen. The maximum oil yield (721 litre/ha) was registered in IW/CPE=1.2 with 120 kg N/ha followed by IW/CPE=1.0 with the same dose of nitrogen/ha. The maximum NUE (30.0 %) was achieved in IW/CPE=1.0 with 40 kg N/ha followed by IW/CPE=1.0 and with 40 kg N/ha. Among the irrigation levels, maximum WUE was recorded 9.6 kg/ha/mm with IW/CPE=1.0 whereas, application of 120 kg N/ha was noticed maximum WUE about 11.2 kg/ha/mm. The maximum biological yield was registerd in IW/CPE=0.8 with 120 kg nitrogen/ha and the lowest was recorded with IW/CPE=1.2 with 40 kg nitrogen/ha. The IW/CPE=1.0 along with 120 kg nitrogen/ha is a suitable combination for profitable production of hybrid mustard in the Mohanpur, West Bengal and other similar ecoregions.