Author(s):

Jyotiprakash Mishra, Rajesh Kumar Singh, DeshrajYadaw, Sabyasachi Sahoo and Ambika Prasad Mishra

Abstract: A field experiment was conducted during the rabi season of 2014-15 at Agricultural Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh (India) to study the effect of tillage and irrigation frequency on productivity of Indian mustard [Brassica juncea (L.) Czernj and Cosson]. The experiment was laid out in split-plot design with three replications. The main plot treatment consisted three tillage practices viz. Zero tillage, Reduced tillage (2 harrowing + 1 planking), Conventional tillage (1 deep ploughing with disc + 2 harrowing + 1 planking), whereas four levels of irrigations i.e.No irrigation, One irrigation (35 DAS), Two irrigations (35 DAS + 60 DAS), Three irrigations (35 DAS + 60 DAS + 90 DAS) were allocated to sub-plots. The seed yield increased with increasing intensity of tillage operations. Conventional tillage produced 30.6% and reduced tillage recorded 10.2% higher seed yield than and zero tillage. Application of one irrigation, two irrigations and three irrigations recorded 7.8, 18.6% and 24.2% higher yield as compared to the control. The maximum oil yield of 596kg ha^-1 was obtained with conventional tillage that recorded 7% and 16% higher oil yield than reduced tillage and zero tillage. Increasing intensity of tillage from zero tillage to conventional tillage caused significant increase in protein yield. The protein yield (kg ha^-1) of mustard also improved with increase in irrigation frequency up to three irrigations.

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