The Toxicity Effect of Certain Photosensitizing Compounds on Some Biological Aspects of Field Strain of Agrotis ipsilon (Hufnagel) Larvae

The black cutworm, Agrotis ipsilon larvae is the most serious pest around world; it attacked plant in growing stage of many crops such as cotton, potato, corn, and tomato causing great damage for them others which led to reduce yield. So chemical insecticides are used controlling this may buildup resistance these pesticides Therefore, needed evaluate some compounds that belonged different categories safranin, methylene blue bromophenol against 4th larval instars A. using poison baits. results clearly demonstrated tested had, a stomach contact toxicity through feeding on treated baits also, all toxicants exhibited antifeedant starvation effects addition resulting paralysis post-feeding. Results basis medium lethal concentrations LC50 varied stage, promising treatment among investigated were safranin showed lowest LC50, was more toxic followed by effect noticed case treatment. both LC25values remarkable significant increase pupal durations with retardation their development well an mortality percentage malformation pupae adults. Also, affected fertility photosensitizers, can be cutworm hosts baits’ alternatives traditional pesticides, increasing decreasing insect-resistant build up method implementing integrated control program.