مطالعه کارائی حشره‌کش اسپینوساد (Sponsor SC 24%) روی خسارت کرم میوه گوجه فرنگی Helicoverpa armigera

Tomato is an important vegetable crop grown around the world occupying the daily food regime of a majority of people. Tomato fruit borer, Helicoverpa armigera (Hub)(Lep: Noctuidae) is key pest of tomato in Iran. It causes economic loss by reduction in fresh fruit quality and yield in tomato. Spinosad is derived from the fermentation of a naturally occurring soil actinomycete bacterium; Spinosad has low toxicity to beneficial insects and rapid degradation in the environment. The aim of this study was to introduce new and selective insecticides. This research carried out in three provinces, Hormozgan, Bushehr and Fars in 2017. The treatments were: spinosad (Sponsor) SC 24% the rate of 120 ml/ha and 150 ml/ha, Indoxacarb (Avaunt) SC15 % at 250 ml/ha, trichlorophen (Dipterex) SP 80%, 2 Kg/ha α-cypermethrin + teflubenzuron( Imunit) SC 15% 300 ml/ ha and the control treatment water spraying. The living larvae were counted 4 times: one day before of spraying and , 7, 14 and 21 days after spraying. The data were analyzed using SAS Institute (2001) software; The field data showed that among different treatments, spinosad (Sponsor) SC 24% the rate of 120 and 150 ml/ha 14 days after application in Hormozgan with (98.85±1.25 and 100%) in Fars with (100%) and in Bushehr with(83.93±1.97 and 85.85± 2.11) had the highest efficiency among the treatments.also, the percentage of damaged fruits at 14 days after treatments in Hormozgan (0.5 ±0.5 and 0) and in Fars (5.0±0.57 and 0.5 ± 1.97) were obtained. Therefore, these concentrations of spinosad insecticides can be recommended.