Evaluation of Different Varieties and Nitrogen Levels on Growth and Yield of Black Rice (Oryza sativa L.)

The field experiment was conducted at Crop Research Farm during kharif season, in the Department of Agronomy, Naini Agriculture Institute, Sam Higginbottom University of Agriculture, Technology And Sciences, Prayagraj Uttar Pradesh. The experiment comprised three varieties viz., Chakhao Poireiton (V1), Chakhao Amubi (V2) and Chakhao Angangba (V3); and three rates of nitrogen viz., 60 kg/ha (N1), 70 kg/ha (N2) and 80 kg/ha (N3). The experiment was laid out in a randomized block design with three replications. The growth analysis result was observed with the application of [Chakhao Poireiton and nitrogen (80 kg/ha)] produces higher plant height (142.53 cm), maximum number of tillers/hill (13.97), higher plant dry weight (32.49 g), higher panicle length (30.1 cm), maximum number of grains/panicle (153.60), higher test weight (24.01 g), higher grain yield (5.67 t/ha), higher straw yield (11.27 t/ha). However, the maximum gross return (2,38,070.00 INR/ha), maximum net return (1,89,800.00 INR/ha) and maximum benefit cost ratio (3.23) was also obtained with the same treatment 3 [Chakhao Poireiton + nitrogen (80 kg/ha)].