The use of Bt semisolid bait for biological control of Agrotis segetum (Lepidoptera: Noctuidae)
عنوان دوره: دومین کنگره بین المللی حشره شناسی ایران
نویسندگان
چکیده
Abstract
Agrotis segetum is considered one of the most important pests. The larvae feed on young leaves and the base of the neck (crown), which causes a relatively large hole in the crown of the plant. In this study, the efficacy of Bt Semisolid bait (Formulated by IRIPP) compared with conventional methods (Organophosphate pesticides). At the beginning of the growing season (Seven days after emergence) treatments contained: Dursban (EC 40.8% 2lit /ha), Bt bait (5 lit Bt (Biolop)+ 50 lit water+100 kg wheat bran/ha), Bt (Biolop) Spray (3ml/1000ml), Semisolid Bt bait (100 Kg/ha) and check, were carried out in a randomized complete block design with 4 replications, seven days after emergence and then 10 days on the turnip (winter) moth, A. segetum in sugar beet fields. Analysis of variance for agronomic traits in the West Azerbaijan province, showed that the reduction of damage related to Bt Semisolid bait treatment and significantly better than other treatments. In the Lorestan province based on the analysis of data in total of two-year review, the efficacy of Semisolid Bt bait and Dursban were better than other treatments.
Agrotis segetum is considered one of the most important pests. The larvae feed on young leaves and the base of the neck (crown), which causes a relatively large hole in the crown of the plant. In this study, the efficacy of Bt Semisolid bait (Formulated by IRIPP) compared with conventional methods (Organophosphate pesticides). At the beginning of the growing season (Seven days after emergence) treatments contained: Dursban (EC 40.8% 2lit /ha), Bt bait (5 lit Bt (Biolop)+ 50 lit water+100 kg wheat bran/ha), Bt (Biolop) Spray (3ml/1000ml), Semisolid Bt bait (100 Kg/ha) and check, were carried out in a randomized complete block design with 4 replications, seven days after emergence and then 10 days on the turnip (winter) moth, A. segetum in sugar beet fields. Analysis of variance for agronomic traits in the West Azerbaijan province, showed that the reduction of damage related to Bt Semisolid bait treatment and significantly better than other treatments. In the Lorestan province based on the analysis of data in total of two-year review, the efficacy of Semisolid Bt bait and Dursban were better than other treatments.
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