RELATIVE EFFECTIVENESS OF DIFFERENT INSECTICIDES AGAINST PEA LEAF MINER (PHYTOMYZA HORTICOLA GOUREAU) ON PEA UNDER FIELD CONDITIONS

To evaluate the comparative toxicity of various insecticides viz. chlorfenapyr 360 sl(pirate), spinosad 240sc (tracer), chlorantraniliprole 20sc (coragen), bifenthrin + abamectin 56 ec (novastar) and spintoram 120 se (radient) against pea leaf miner an experiment was conducted at entomological research area, university of agriculture, faisalabad, punjab, pakistan during 2014-15. the experiment was laid out in randomized complete block design (rcbd) with three replications. a control plot (no insecticide application) was also maintained for comparison. the insecticides applied when leaf miner infestation was reached at economic threshold level (etl). after 1^st and 2^nd spray minimum infestation was recorded after 72 hours in plots treated with spintoram (4.65 and 4.94%), bifenthrin + abamectin (5.25 and 5.58%), spinosad (5.82 and 6.21%), chlorfenapyr (6.15 and 7.23%) and chlorantraniliprole (7.28 and 8.89%) respectively. similarly after 1^st and 2^nd spray maximum reduction was recorded after 72 hours in plots treated with spintoram (84.02 and 85.00%), bifenthrin + abamectin (82.09 and 83.01%), spinosad (80.18 and 81.15%),chlorfenapyr (79.02 and 78.03%) and chlorantraniliprole (75.19 and 73.03%) respectively. while after 7 days of application, effectiveness of spinosad, chlorantraniliprole and spintoram was increased while bifenthrin + abamectin and chlorfenapyr were decreased. maximum reduction was recorded where spintoram was applied i.e. 90.02% followed by spinosad (85.02%), chlorantraniliprole (80.00%) and bifenthrin + abamectin (77.87%) respectively. while minimum reduction (75.02%) was recorded where chlorfenapyr was applied.