Yield Gap Minimization In Mustard Through Agronomic Management Techniques

Abstract

To find out the yield gap, causes of yield gap and to minimize yield gap of mustard (Brassica Sp.) through agronomic management techniques, there were 03 (three) different experiments were conducted. From first experiment, 04 (four) most potential mustard varieties were selected for next experiments. The second and third experiment was conducted at research field and at farmer’s field with four mustard varieties viz. BARI Sarisha 9, BARI Sarisha 11, BARI Sarisha 14, BARI Sarisha 15 and three different sowing times viz. 30th October, 10th November and 20th November in three different growing seasons. Then the yield gap analysis, the causes of yield gap and strategies for minimizing the yield gaps of mustard were find out. In this study different treatments showed significant influence on yield contributing characters and yield of mustard in the growing seasons of 2014-15, 2015-16 and 2016-17 both at research and farmer’s field. In general BARI Sarisha 11 with 10th November sowing time gave the maximum plant height, no. of leaves plant-1, no. of branches plant-1, days to 50% flowering, days to maturity, pod length, no. of pods plant-1, no. of seeds pod-1, no. of seeds plant-1, 1000-seeds weight and finally seed, straw and oil yield whereas the minimum values of above parameters were obtained from BARI Sarisha 9 with 20th November sowing time in all three growing seasons. Effect of different variety and sowing time on yield contributing characters and yield of mustard was noticeable. BARI Sarisha 11 produced the highest values and BARI Sarisha 9 gave the lowest values. On the other hand, values of all yield contributing characters were found to be decreased with increasing the date of sowing after 10th November. The highest yield gaps of mustard between research and farmers field were 395.00 kg ha-1 with 17.99%, 480.00 kg ha-1 with 21.05% and 471.00 kg ha-1 with 20.60% from BARI Sarisha 11 with 10th November showing time in the growing seasons of 2014-15, 2015-16 and 2016-17. Biological factors, socio-economic factors, climatic factors, institutional/Government policy related factors and technology transfer factors are considered for causing yield gaps of mustard.------