Efficacy of Insecticides Against Rice White Backed Planthopper
Keywords:Rice, Sogatella furcifera, insecticides, pymetrozine 50WG, sulfoxaflor 24SC and imidacloprid 17.8SL, yield, cost benefit ratio
Efficacy of some insecticides (pymetrozine 50WG, sulfoxaflor 24SC and imidacloprid 17.8SL) was evaluated against rice white backed plant hopper (WBPH) Sogatella furcifera Horvath. Sulfoxaflor 24SC @218.7 g a.i./ ha and pymetrozine 50WG @ 187.5 g a.i./ ha gave significantly results (7.57 and 7.82/ hill, respectively).However, highest grain and straw yield (40.87 and 64.33 q/ ha) was observed with pymetrozine 50WG@ 187.5 g a.i./ ha and sulfoxaflor 24SC @ 218.7 g a.i./ ha (40.41 and 64.22 q/ ha). Regarding incrementalcost benefit ratio (ICBR), it was observed that maximum ICBR was obtained with pymetrozine 50 WG@ 187.5 g a.i./ ha (1: 3.55) followed by sulfoxaflor 24SC @ 218.7 g a.i./ ha (1: 2.99). Thus, pymetrozine 50WG at 187.5 g a.i./ ha and sulfoxaflor 24SC at 218.7 g a.i./ha can be recommended against rice WBPH.
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