Vol. 15 No. 1
Diversity and dynamics of weeds as influenced by flucetosulfuron 10 % WG in direct seeded rice and its residual effect on succeeding crop green gram
Author(s): S. SRIDHARA, P. GOPAKKALI, T. B. NAIK., S. PRADEEP AND H. D. SHILPA
Abstract: Weed management in direct seeded rice through flucetosulfuron 10 % WG and its residual effect on succeeding green gram was identified in the field experiment at College of Agriculture, Navile, Shivamoga, the University of Agricultural and Horticultural Sciences, Shivamogga, during kharif 2013- 2014 and rabi 2014-2015. Weed control treatments consisting flucetosulfuron at different doses (15 to 30 g a.i. ha-1) and other herbicides bispyribac sodium 10%SC 20 g a.i. ha-1, azimsulfuron 50% DF 35 g a.i. ha-1 and hand weeding. Dominant weed flora observed in the experimental field among grasses Echinochloacolonum, E. crusgalli and Leptochloachinensis among sedges Cyperusdifformis and C. iria whereas in case of broadleaf weeds (BLW) Ludwigiaparviflora, Ecliptaprostrata, Alternantherasessilis, Fimbristylismiliacea and Marseliaquadrifolia were dominated weeds. Application flucetosulfuron10 % WG @ 25g a.i. ha-1 registered consistently good control of all category of weeds, i.e., grasses, sedges and broad leaved weeds and was on par with flucetosulfuron10 % WG @ 30g a.i. ha-1 dose and these herbicides did not cause any phytotoxicity symptoms on preceding crop direct seeded rice as well as succeeding crop green gram and recorded significantly higher grain yield in direct seeded rice.
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