Survey on insect pest complex and bioefficacy of certain insecticide molecules against aphids, Myzus persicae (Sulz.) on capsicum under poly house conditions

Abstract

Surveys conducted in Telangana and Andhra Pradesh states during 2013-14 on insect pests of capsicum revealed that population levels of insect pests and per cent damage were higher in open field conditions, moderate in shade net conditions and lowest in poly house condition. Bioefficacy of seven insecticides viz., spinosad @ 125 ml ha, flubendiamide @200 ml ha¹, chlorantraniliprole @ 200 ml har, Diafenthiuron 25 WP @750 g ha¹, spiromesifen @ 750 ml ha¹, thiamethoxam @150 g har and triazophos @ 1250 ml ha along with untreated check were evaluated against the aphid, Myzus persicae (Sulz.) during 2013-14 and 2014-15 under poly house conditions. Mean aphid population in pre count ranged from 2.48 to 9.90 and post count population was less with thiamethoxam (1.02 aphids/leaf) followed by diafenthiuron (1.24 aphids/leaf) which were at par with each other and significant superior over other treatments and untreated check (11.38 aphids/leaf). The descending order (based on population) of efficacy with the other treatments was chlorantraniliprole (5.05 aphids/leaf) >flubendiamide (6.28 aphids/leaf) >spinosad (6.46 aphids/leaf) >spiromesifen (6.91 aphids/leaf) >triazophos (7.38 aphids/ leaf) were significantly superior over untreated check. Leaf curl index was in order of its efficacy of insecticides.