Field efficacy of biorational insecticides, azadirachtin and Bt, on Agrotis segetum (Lepidoptera: Noctuidae) and its carabid predators in the sugar beet fields
Agrotis segetum (Denis & Schiffermüller) is an important polypahgous pest of sugar beet fields in many regions of world including Iran. Biorational pesticides are good and safe alternatives to the chemical insecticides which are compatible with goals of IPM programs. In this study, efficacy of t...
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| Format: | Article |
| Language: | English |
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University of Tarbiat Modares
2018-09-01
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| Series: | Journal of Crop Protection |
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| Online Access: | http://jcp.modares.ac.ir/article-3-24819-en.html |
| _version_ | 1818551456626638848 |
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| author | Amin Heibatian Heibatian Fatemeh Yarahmadi Amin Lotfi Jalal Abadi |
| author_facet | Amin Heibatian Heibatian Fatemeh Yarahmadi Amin Lotfi Jalal Abadi |
| author_sort | Amin Heibatian Heibatian |
| collection | DOAJ |
| description | Agrotis segetum (Denis & Schiffermüller) is an important polypahgous pest of sugar beet fields in many regions of world including Iran. Biorational pesticides are good and safe alternatives to the chemical insecticides which are compatible with goals of IPM programs. In this study, efficacy of three biorational pesticides, Azadirachtin (NeemAzal®), Bt (Bactospeine®) and Bt (Biolep®), and a conventional chemical insecticide, deltamethrin (Decis® EC), was studied on pest population and damages as well as carabid beetle population as its important predators in sugar beet field during two agricultural seasons (2015 and 2016). Sampling of the pest egg batches, larvae and the carabid beetles was carried out at 1 day before treatment (DBT) and 1, 3, 7 and 10 days after treatment (DAT). Finally, total yield and sugar content of sugar beet in the different treatments were evaluated for the two agricultural seasons. Results showed that NeemAzal was a significant oviposition deterrent for female moths of A. segetum. During both agricultural seasons, the highest and lowest larvicidal effects were observed in Decis and Bt (EC) treatments, respectively. Ten DAT, 40, 60, 13 and 73% reductions of pest population larvae were observed were observed in NeemAzal, Bt (WP), Bt (EC) and Decis treatments, respectively. Sugar beet yield in all treatments was significantly higher than control. Total yields in NeemAzal, Bt (WP), BT (EC) and Decis treatments were 17.5, 25.6, 12.9 and 43.7% more than control in 2015 and 8.7, 19.7, 4.8 and 37.1% respectively in 2016. But sugar content in the different treatments was not significantly different. Totally, the most adverse effects on carabid beetles were recorded in Decis® treatment. |
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| id | doaj.art-87c31669ef1c4af699a9bf664e283350 |
| institution | Directory Open Access Journal |
| issn | 2251-9041 2251-905X |
| language | English |
| last_indexed | 2024-12-12T09:00:08Z |
| publishDate | 2018-09-01 |
| publisher | University of Tarbiat Modares |
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| series | Journal of Crop Protection |
| spelling | doaj.art-87c31669ef1c4af699a9bf664e2833502022-12-22T00:29:52ZengUniversity of Tarbiat ModaresJournal of Crop Protection2251-90412251-905X2018-09-0174365373Field efficacy of biorational insecticides, azadirachtin and Bt, on Agrotis segetum (Lepidoptera: Noctuidae) and its carabid predators in the sugar beet fieldsAmin Heibatian Heibatian0Fatemeh Yarahmadi1Amin Lotfi Jalal Abadi2 Department of Plant Protection, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollsasni, Ahvaz, Iran. Department of Plant Protection, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollsasni, Ahvaz, Iran. Department of Agronomy and Plant Breeding, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollsasni, Ahvaz, Iran. Agrotis segetum (Denis & Schiffermüller) is an important polypahgous pest of sugar beet fields in many regions of world including Iran. Biorational pesticides are good and safe alternatives to the chemical insecticides which are compatible with goals of IPM programs. In this study, efficacy of three biorational pesticides, Azadirachtin (NeemAzal®), Bt (Bactospeine®) and Bt (Biolep®), and a conventional chemical insecticide, deltamethrin (Decis® EC), was studied on pest population and damages as well as carabid beetle population as its important predators in sugar beet field during two agricultural seasons (2015 and 2016). Sampling of the pest egg batches, larvae and the carabid beetles was carried out at 1 day before treatment (DBT) and 1, 3, 7 and 10 days after treatment (DAT). Finally, total yield and sugar content of sugar beet in the different treatments were evaluated for the two agricultural seasons. Results showed that NeemAzal was a significant oviposition deterrent for female moths of A. segetum. During both agricultural seasons, the highest and lowest larvicidal effects were observed in Decis and Bt (EC) treatments, respectively. Ten DAT, 40, 60, 13 and 73% reductions of pest population larvae were observed were observed in NeemAzal, Bt (WP), Bt (EC) and Decis treatments, respectively. Sugar beet yield in all treatments was significantly higher than control. Total yields in NeemAzal, Bt (WP), BT (EC) and Decis treatments were 17.5, 25.6, 12.9 and 43.7% more than control in 2015 and 8.7, 19.7, 4.8 and 37.1% respectively in 2016. But sugar content in the different treatments was not significantly different. Totally, the most adverse effects on carabid beetles were recorded in Decis® treatment.http://jcp.modares.ac.ir/article-3-24819-en.htmlchemical controlbiological controldeltamethrincut worm |
| spellingShingle | Amin Heibatian Heibatian Fatemeh Yarahmadi Amin Lotfi Jalal Abadi Field efficacy of biorational insecticides, azadirachtin and Bt, on Agrotis segetum (Lepidoptera: Noctuidae) and its carabid predators in the sugar beet fields Journal of Crop Protection chemical control biological control deltamethrin cut worm |
| title | Field efficacy of biorational insecticides, azadirachtin and Bt, on Agrotis segetum (Lepidoptera: Noctuidae) and its carabid predators in the sugar beet fields |
| title_full | Field efficacy of biorational insecticides, azadirachtin and Bt, on Agrotis segetum (Lepidoptera: Noctuidae) and its carabid predators in the sugar beet fields |
| title_fullStr | Field efficacy of biorational insecticides, azadirachtin and Bt, on Agrotis segetum (Lepidoptera: Noctuidae) and its carabid predators in the sugar beet fields |
| title_full_unstemmed | Field efficacy of biorational insecticides, azadirachtin and Bt, on Agrotis segetum (Lepidoptera: Noctuidae) and its carabid predators in the sugar beet fields |
| title_short | Field efficacy of biorational insecticides, azadirachtin and Bt, on Agrotis segetum (Lepidoptera: Noctuidae) and its carabid predators in the sugar beet fields |
| title_sort | field efficacy of biorational insecticides azadirachtin and bt on agrotis segetum lepidoptera noctuidae and its carabid predators in the sugar beet fields |
| topic | chemical control biological control deltamethrin cut worm |
| url | http://jcp.modares.ac.ir/article-3-24819-en.html |
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