Effect of Nitrogen Levels on Mustard (Brassica juncea (L.) Cuzern and Coss.) Varieties under Late Sown Condition

Aims: To Study on the Effect of nitrogen levels on growth and yield of mustard (Brassica juncea Curzen and Cross.) varieties under late sown condition

Study Design: The Field experiment was laid out in a Factorial randomized block design used in this study.

Place and Duration of Study: The study was carried out between November 2015 and March 2016 at the Agronomy Research Station, Narendra Deva University of Agriculture and Technology, Faizabad (Uttar Pradesh) at 26.47˚ N latitude, 82.12° E longitude and an altitude of about 113 metres above the mean sea level.

Methodology: Testing the experiment near alkaline in pH, low EC, low Organic carban and available N, medium in available P and medium available K. Growth parameter observed at 30,60,90, and at harvest stage and the following parameters were determined: plant height (cm), number of seeds branches, LAI and reported as dry matter in g plant-1. The seed yield was measured by harvesting net plot area of each plot at crop full maturity (physiological maturity).

Results: The current study showed that the all growth parameter like, Plant height, Dry matter accumulation, number of branches, LAI and stover yield significantly highest recorded with 160 kg ha-1nitrogen and that was at par with 120 kg N ha-1 and with NDR-8510 variety is superior in all growth and yield followed by Vardan and Maya. Highest mustard seed yield recorded with 120 kg N ha-1 and variety NDR-8501. Interaction of nitrogen levels and varieties in case of yield was found significant.

Conclusion: Nitrogen level of 120 kg/ha can be considered as suitable dose for higher yield of mustard. Among mustard varieties, NDR-8501 performed most promising followed by Vardan and Maya in terms of growth and yield and can be recommended for the cultivation in eastern Uttar Pradesh. A combination of mustard variety NDR-8501 along with 120 kg N ha-1 recorded significantly higher growing yield of mustard seed in over rest of the treatments.