Bio-efficacy of various insecticides against aphid, Myzus persicae Sulzer infesting cumin (Cuminum cyminum L.)
Italiya LM, Sisodiya DB and Baladhiya HC
A field experiment was conducted at Agronomy farm, B. A. College of Agriculture, Anand Agricultural University, Anand (Gujarat) during rabi, 2015-16 to evaluate the efficacy of different nine insecticides (imidacloprid 0.005%, thiamethoxam 0.0125%, clothianidin 0.025%, carbosulfan 0.05%, acephate 0.075%, diafenthiuron 0.05%, dimethoate 0.03%, flonicamid 0.015% and tolfenpyrad 0.03%) against cumin aphid, Myzus persicae compared to control. The tolfenpyrad 0.03% was observed significantly superior insecticide followed by flonicamid 0.015. The population of coccinellids (predators)/5cm shoot showed non-significant difference among treatments and were as good as control indicating no any hazardous effect of tested insecticides. The highest seed yield of cumin was obtained from the plots treated with tolfenpyrad 0.03% (22.41 q/ha) followed by flonicamid 0.015% (21.70 q/ha). The flonicamid 0.015% (3.15%) recorded lowest avoidable losses followed by clothianidin 0.025% (18.49%). The highest increase in seed yield over control and maximum net realization were registered from the plot treated with tolfenpyrad 0.03% (145.22% and 161131 ₹/ ha) followed by flonicamid (137.45% and 154938 ₹/ ha). Maximum ICBR was registered in the treatment of imidacloprid 0.0052% (1:106.18) followed by flonicamid 0.015% (1:76.14).