Efficacy of some bioinsecticides against the Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) under laboratory conditions
The efficacy of three bioinsecticides: the microbial Naturalis (Beauveria bassiana), the botanical Pyrethrum FS EC (pyrethrin + sesame oil + soft potassium soap) and NeemAzal T/S (azadirachtin), allowed for application in organic farming in Bulgaria, against larvae and adult...
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doaj-df469083f2b14d31a43a4f0d4f0ca42a2020-12-25T09:00:41ZengPlovdiv University Press Journal of BioScience and Biotechnology1314-62381314-62462020-12-01926164Efficacy of some bioinsecticides against the Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) under laboratory conditions Daniela Atanasova0Pavlin Vasilev1Department of Entomology, Faculty of Plant Protection and Agroecology, Agricultural University of Plovdiv, Bulgaria.Department of Entomology, Faculty of Plant Protection and Agroecology, Agricultural University of Plovdiv, Bulgaria.The efficacy of three bioinsecticides: the microbial Naturalis (Beauveria bassiana), the botanical Pyrethrum FS EC (pyrethrin + sesame oil + soft potassium soap) and NeemAzal T/S (azadirachtin), allowed for application in organic farming in Bulgaria, against larvae and adults of the Colorado potato beetle, Leptinotarsa decemlineata(Say) (Coleoptera: Chrysomelidae) was studied under laboratory conditions. The best results from the tested products showed microbial insecticide Naturalis (Beauveria bassiana). At a concentration of 0.2%, the efficacy reached 78.4% and 68.4% on the 5th day for larvae and adults, respectively, and 100% on the 7th day after the treatment for both larvae and adults. The preparation showed very good action in its low concentration (0.1%) –efficacy was 88.5% and 68.5% on the 7th day after the treatment for larvae and adults, respectively. Insecticides based on plant extracts showed very good results. The botanical insecticide Pyrethrum FS EC showed a fast initial action and good effectiveness. At a concentration of 0.1%, the efficacy reached 96.5% and 86.5% on the 5th day for larvae and adults, respectively, and 100% on the 7th day after the treatment for both. The preparation showed good action in its low concentration (0.05%) –efficacy was 84.3% and 68.4% on the 7th day after the treatment for larvae and adults, respectively. The botanical insecticide NeemAzal T/S at a concentration of 0.3% the efficacy was 81.8% and 63.7% for larvae and adults, respectively on the 7th day after the treatment. At its low concentration of 0.1%, the NeemAzal T/S had insufficient effect and efficacy was only was 59.3% and 29.8% on the 7th day after the treatment for larvae and adults, respectively.https://editorial.uni-plovdiv.bg/index.php/JBB/article/view/323/256bioinsecticidesbeauveria bassiananaturalispyrethrum fs ecneemazal t/cleptinotarsa decemlineata |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Daniela Atanasova Pavlin Vasilev |
spellingShingle |
Daniela Atanasova Pavlin Vasilev Efficacy of some bioinsecticides against the Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) under laboratory conditions Journal of BioScience and Biotechnology bioinsecticides beauveria bassiana naturalis pyrethrum fs ec neemazal t/c leptinotarsa decemlineata |
author_facet |
Daniela Atanasova Pavlin Vasilev |
author_sort |
Daniela Atanasova |
title |
Efficacy of some bioinsecticides against the Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) under laboratory conditions |
title_short |
Efficacy of some bioinsecticides against the Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) under laboratory conditions |
title_full |
Efficacy of some bioinsecticides against the Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) under laboratory conditions |
title_fullStr |
Efficacy of some bioinsecticides against the Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) under laboratory conditions |
title_full_unstemmed |
Efficacy of some bioinsecticides against the Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) under laboratory conditions |
title_sort |
efficacy of some bioinsecticides against the colorado potato beetle leptinotarsa decemlineata (say) (coleoptera: chrysomelidae) under laboratory conditions |
publisher |
Plovdiv University Press |
series |
Journal of BioScience and Biotechnology |
issn |
1314-6238 1314-6246 |
publishDate |
2020-12-01 |
description |
The efficacy of three bioinsecticides: the microbial Naturalis (Beauveria bassiana), the botanical Pyrethrum FS EC (pyrethrin + sesame oil + soft potassium soap) and NeemAzal T/S (azadirachtin), allowed for application in organic farming in Bulgaria, against larvae and adults of the Colorado potato beetle, Leptinotarsa decemlineata(Say) (Coleoptera: Chrysomelidae) was studied under laboratory conditions. The best results from the tested products showed microbial insecticide Naturalis (Beauveria bassiana). At a concentration of 0.2%, the efficacy reached 78.4% and 68.4% on the 5th day for larvae and adults, respectively, and 100% on the 7th day after the treatment for both larvae and adults. The preparation showed very good action in its low concentration (0.1%) –efficacy was 88.5% and 68.5% on the 7th day after the treatment for larvae and adults, respectively. Insecticides based on plant extracts showed very good results. The botanical insecticide Pyrethrum FS EC showed a fast initial action and good effectiveness. At a concentration of 0.1%, the efficacy reached 96.5% and 86.5% on the 5th day for larvae and adults, respectively, and 100% on the 7th day after the treatment for both. The preparation showed good action in its low concentration (0.05%) –efficacy was 84.3% and 68.4% on the 7th day after the treatment for larvae and adults, respectively. The botanical insecticide NeemAzal T/S at a concentration of 0.3% the efficacy was 81.8% and 63.7% for larvae and adults, respectively on the 7th day after the treatment. At its low concentration of 0.1%, the NeemAzal T/S had insufficient effect and efficacy was only was 59.3% and 29.8% on the 7th day after the treatment for larvae and adults, respectively. |
topic |
bioinsecticides beauveria bassiana naturalis pyrethrum fs ec neemazal t/c leptinotarsa decemlineata |
url |
https://editorial.uni-plovdiv.bg/index.php/JBB/article/view/323/256 |
work_keys_str_mv |
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