Cost benefit ratio for the management of rice gundhi bug, Leptocorisa acuta (Thonberg) under field condition

Abstract

An experiment was conducted during Kharif season in 2016, to analysis the cost benefit ratio of the treatments in rice field for control rice gundhi bug [Leptocorisa acuta (Thonberg)] at Central Research Farm, SHUATS, Naini, Allahabad. Three applications of seven insecticides viz; Imidacloprid 17.8% SL, Trizophos 25% SP, Monocrotophos 36% SL, Thiamethoxam 25% WG, Acephate 75% SP, Carbaryl 50% SP, Malathion 50% EC were evaluated against Rice Gundhi bug, Leptocorisa acuta. The yields among the treatment were significant. The highest yield was recorded in Imidacloprid (46.800 q/ha) followed by Triazophos (44.500 q/ha), Thiamethoxam (44.300 q/ha), Monocrotophos (43.700 q/ha), Acephate (42.400 q/ha), Carbaryl (40.900 q/ha), Malathion (39.800 q/ha) as compared to control T0 (29.500 q/ha). When cost benefit ratio was worked out, interesting result was achieved. Imidacloprid treatment studied, the best and most economical treatment was T1 (1:2.66), followed by Triazophos (1:2.53), Monocrotophos (1:2.49), Acephate (1:2.41), Thiamethoxam (1:2.40), Carbaryl (1:2.35), Malathion (1:2.19) as compared to control To (1:1.74).