FIELD PERFORMANCE OF DIFFERENT WEED CONTROL PRACTICES IN PUDDLED FIELD DRUM SEEDED RICE
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 58
Abstract
Weeding is one of the critical stages in rice cultivation which affects yield and quality of rice. The success of direct wet seeded rice crop is dependent upon efficient weed control. The present study was conducted to evaluate the field performance of different weed control measures such as manual weeding, chemical weeding and weeding with mechanical weeders like cono weeder and two row power weeder to find out the best economical weed control method in direct seeded rice sown by drum seeder with 20 cm row spacing. The highest field capacity was found 0.06 ha /h with the field efficiency of 70.98 per cent at an average speed of 2.09 kmph for power weeder whereas the field capacity of 0.01 ha /h with the field efficiency of 76.56 per cent at an average speed of 0.83 kmph for conoweeder by mechanical weeding. The fuel consumption for power weeder was observed that 9.25, l/ha. The highest weeding efficiency was found to be 100 per cent with the zero per cent plant damage for manual weeding followed by 90.26 per cent with 1.33 per cent plant damage for cono weeder 90.38 per cent for chemical weeding and 87.58 per cent with 2.63 per cent plant damage for power weeder respectively. Significantly higher grain yield (5949 kg/ha) were realized when manual weeding was employed as weed management option, however this was at par with cono weeding (5645 kg/ha) and significantly superior over weeding with power weeders (5416 kg/ha) and herbicides (5442 kg/ha). Among the all weeding methods the lowest operating cost of 747.12Rs/ha was associated with power weeder and the highest operating cost with 5390.63Rs/ha pertained to manual weeding. Based on the obtained results the weeding cost in power weeder, cono weeder and chemical weeding was reduced by 86, 70 and 73 per cent respectively compared to manual weeding method.
Authors and Affiliations
R. JAYA PRAKASH
Keywords
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