مقایسه کارآیی چند سم حشره کش در کنترل کرم پیله‌خوار نخودHeliothis viriplaca (Lep.: Noctuidae)
محورهای موضوعی : گیاه پزشکیکلید واژه: کارایی, Efficacy, کرم پیله‌خوار نخود, Heliothis viriplaca, سموم, Chickpea pod borer, Insecticides,
چکیده مقاله :
کرم پیله خوار نخودHeliothis viriplaca Hufn. یکی از آفات مهم زراعت نخود در استان آذربایجان شرقی می باشد. در سالهای اخیر استفاده بی رویه و غیر اصولی از سموم سبب بروز مقاومت در آفات از جمله جمعیت لارو های کرم پیله خوار نخود و عدم موفقیت در کنترل شیمیایی آنها گردیده است. این بررسی به منظور مطالعه کارآیی سموم جدید در کنترل لاروهای پیله خوار نخود درسال زراعی 1387- 1386 در قالب طرح بلوکهای کامل تصادفی با سه تکرار در مزرعة نخود دیم رقم ILC 482 در منطقه مراغه انجام گرفت. تیمارها عبارت بودند از: ایندوکساکارب% Sc 15( ml/ha 250 و 200)، ایندوکساکارب % Ec 15(200 ml/ha) ، پریدالیل % Ec 50 ( ha ml/ 150 و200) و کارباریل kg/ha) Wp 85% 3) همراه با شاهد (آب). شمارش لاروهای زنده در 5 نوبت شامل : یک روز قبل از سمپاشی و 1، 3، 7 و 12 روز بعد از سمپاشی روی 20 بوته از بخش میانی کرت های آزمایشی و شاهد انجام گرفت و در نهایت تعداد کل پیله‌ها و تعداد پیله‌های آفت زده روی 20 بوته در هر کرت به طور تصادفی برآورد گردید. نتایج بررسی نشان داد که بین تیمارها در روزهای هفتم و دوازدهم پس از سمپاشی اختلاف معنی داری در سطح احتمال 5 % وجود دارد. به طوری که ایندوکساکارب (Ec 15%) با دز ml/ha 200 و ایندوکساکارب (Sc15%) با دز ml/ha200، بیشترین تأثیر را داشتند. تیمار کارباریل دوازده روز پس از سمپاشی در انتهای جدول مقایسه میانگین قرار گرفته و تیمارهای پریدالیل در حد واسط این گروه ها قرار گرفتند.
Chick pod borer, Heliothis viriplaca Hufn, is an important pest of chickpea in East Azarbaijan province. In recent years, pesticides harmful effects have become a problem. This matter is also true regarding chemical control of chickpea pod borer. Therefore, the efficacy of some insecticides such as Indoxacarb Sc15%, Indoxacarb Ec15%, Pyridalyl Ec 50%, Carbaryl Wp 85% with a control (only water) against chickpea pod borer, was evaluated in Maragheh, East Azarbaijan during 2007-2008. The experiment was carried out with ILC 482 variety in RCBD design with three replications. Sampling and counting of live larvae was done 1 day before and 1, 3, 7 and 12 days after treatment by randomly selecting 20 plants from four middle rows in each plot and at the end of the experiment, the number of total pods and damaged pods in 20 plants of each plot was determined. The results of 7th and 12th days after insecticides application showed a significant difference among treatments at level of 5%. Indoxacarb Ec 15% (200 ml/ha) and Indoxacarb Sc15% (200 ml/ha) were both the most effective treatments followed by Piridalyl EC 50% (150 and 200 ml/ha) and Carbaryl wp 85%.
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