بررسي كارايي روش اخلال در جفت گيري براي كنترل خسارت كرم خوشه‌خوار انگور(Lobesia botrana(Denis & Schiffermüller) (Lep:Tortricidae)، بوسيله دو محصول تجاري در باغ‌هاي انگور استان قزوين

Evaluation of mating disruption for controlling the European vine moth, Lobesia botrana (Denis & Schiffermüller) (Lep.:Tortricidae) by two commercial products in the vineyards of Qazvin province

د Denis & Schiffermruller )، آفت اصلي انگور در كشور است. روش كنترل شيميايي اين Lep . : Tortricidae ( آفت مستلزم كاربرد سموم آفتكش در چندين نوبت بوده و در نتيجه مي تواند خطري جدي براي محيط زيست و سلامت محصول و انسان ايجاد نمايد. از اين رو كارايي روش اخلال در جفتگيري براي كنترل خسارت اين آفت به وسيله پخش كننده هاي فرومون IsonetL (ساخت شركت Shin Etsul، ژاپن) با تراكم 500 پخش كننده در هكتار در تاكستان هاي استان قزوين با روش كنترل شيميايي (شاهد) مقايسه گرديد. براي اين منظور شكار تله هاي فروموني رديابي و فراواني خوشه هاي آلوده به آفت تعيين و درصد كاهش شكار تله هاي رديابي و درصد خوشه هاي آلوده به آفت در قطعات محل اجراي اخلال در جفت گيري نسبت به قطعات شاهد محاسبه و با و رگرسيون لجستيك مورد استفاده از آزمونهاي General Linear Model، مقايسه آماري قرار گرفتند. نتايج نشان داد كه شكار تله هاي رديابي و در صد خوشه - هاي آلوده به آفت در قطعه اخلال در جفتگيري به ترتيب 97 و 100 درصد كمتر از قطعه شاهد بود. در صد خوشه هاي انگور آلوده به كرم خوشه خوار انگور در قطعات اختلال در جفتگيري و شاهد (دو نوبت سمپاشي) به ترتيب صفر و 4 درصد بود و درصد خوشه هاي انگور آلوده به آفت در قطعه اخلال در جفتگيري به طور معني دار كمتر از شاهد بود.

Accepted: June 2017 Abstract European grapevine moth, Lobesia botrana (Denis & Schiffermüller) (Lep.: Tortricidae), is the main pest of grapes in Iran. Several insecticide applications are necessary for the chemical control of the pest causing severe hazards for environment and human being health. Therefore, the efficiency of mating disruption, at a rate of 500 dispensers per hectare (Isonet L dispensers, Shin Etsu, Japan), was compared with insecticide treatment (control) during 2013 in the vineyards of Qazvin province (Iran). The capture of monitoring traps and the number of infested clusters were monitored in mating disruption and control plots. The percentages of infestations in the plots with different treatments were statistically compared by General Linear Model, X and binomial distribution tests. The monitoring-trap capture rate and the percentage of infested clusters in mating disruption plot were respectively 97% and 100% less than those in control plot. The percentage of infested clusters in mating disruption plot (0%) was significantly less than that in control plot (4%) where chemical insecticides were used 2 times. The percentages of infested clusters in the centre of maiting disruption plots were either significantly less than those in the centre of control plots or there was not any significant difference between them. But in some cases the percentages of infested clusters in the borders of maiting disruption plots were significantly more than that in the borders of control plots. So mating disruption was more efficient in the centre of plots than in the borders for controlling the pest damage. The much lower population density of the pest was the principal reason for the higher efficiency of mating disruption in the region. Keywords: European grapevine moth, Grapevine, Lobesia botrana (Denis & Schiffermüller), Mating disruption