Vol. 11, Issue 12 (2022)

Author(s):
Asanul Hoque and Labani Sarkar

Abstract:
India is one of the largest producers of oilseeds in the world. Its share in world production is as high as 27 percent for groundnut, 23 percent for sesame, 16 percent for rapeseed and mustard and 66 percent for the castor seed. Groundnuts in shell form 11% of world exports and sesame forms 17%. Groundnut, rapeseed-mustard, sesame and safflower are the traditionally cultivated oilseeds. Now-a-days soybean and sunflower have gained importance. To increase domestic production of oilseeds and reduce import bill and make country self-reliant in vegetable oils, the Government of India had launched a Technology Mission on Oilseeds (TMO) in 1986. In recent time however, there is stagnation in both area and production. The field experiment on evaluation of pre and post emergence herbicide for chemical weed management in sesame over summer season of 2020 was conducted at Malda Krishi Vigyan Kendra, Old Alluvial Zone, Uttar Banga Krishi Viswavidyalaya, Malda, West Bengal. The experimental site is situated at 26º8’N latitude and 78ºE longitude having an average altitude of 8.75m above mean sea level. There were altogether ten treatments. The experiment was laid out in a RBD with three replications. Among the different foliar nutrient treatments viz N:P:K 19:19:19, N:P:K 10:26:26 and KNO₃, have shown significantly, higher magnitude of dry matter production than growth regulators at all the growth stages of the crop having maximum number of capsules / plant was obtained under the treatment of foliar spray of N:P:K 19:19:19 at 0.5% followed by N:P:K 10:26:26 at 2%. In this experiment all foliar sprays, had an increasing effect on number of capsule /plant over control and clipping treatments. It was very noteworthy to mention that in general, foliar nutrients showed the better performance than growth regulators. The test weight was increased significantly with application of the growth regulators and foliar nutrients and the trend was like number capsules per plant. Based on one year results, it may be concluded that application of the foliar spray of growth regulators as well as foliar nutrients significantly increased grain yield over only water spray control treatment. Among the foliar nutrients, N:P:K 19:19:19 (0.50%), N:P:K 10:26:26 and KNO, (0.50%) recorded significantly higher seed yield than KCI (0.50%) while, among the growth regulators, Triacontanol 500 ppm recorded more yield than other growth regulators. The finding indicated that clipping at 35 days after sowing is comparatively better than only water sprays treatment. Hence, present study was undertaken.