Vol. 7, Issue 3 (2019)
Studies on crop weed competition and weed management in direct seeded rice under puddled and unpuddled conditions
Author(s): R Karthika, E Subramanian, T Ragavan and K Kumutha
Abstract: A field experiment was carried out in Central farm of Agricultural College and Research Institute, Madurai during rabi (late samba), 2018-19 to study the crop weed competition and weed management in direct seeded rice under puddled and unpuddled conditions. The experiment was laid out in strip plot design with twenty-eight treatmental combinations and three replications. The results revealed that among sowing methods, weed density was recorded higher in aerobic condition and among weed management practices weedy upto panicle initiation stage had recorded the highest weed density whereas weed free upto panicle initiation stage had recorded the lowest weed density, weed index and highest WCE and higher yield. With regard to chemical weed management, the combination of Bensulfuron methyl + Pretilachlor (10 kg a.i. ha-1) fb 2,4-D (1.25 kg a.i. ha-1) + one Hand weeding @ 45 DAS had recorded the lowest weed density with highest WCE as well as highest grain and straw yield. The next best treatment recorded was the application of Pendimethalin (2.5 kg a.i. ha-1) + Bispyribac sodium (50 g a.i. ha-1) fb one Hand weeding @ 45 DAS.
Pages: 2769-2773 | 486 Views 116 Downloads
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How to cite this article:
R Karthika, E Subramanian, T Ragavan, K Kumutha. Studies on crop weed competition and weed management in direct seeded rice under puddled and unpuddled conditions. Int J Chem Stud 2019;7(3):2769-2773.
