Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in Malawi
Common beans (Phaseolus vulgaris) remain an important dietary protein source in Malawi. However, its production is highly hindered by insect pest and disease attack. The study aimed at evaluating the effectiveness of Tephrosia vogelii and Tephrosia candida extracts against bean aphid (Aphis fabae)....
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Agriculture |
| Online Access: | http://dx.doi.org/10.1155/2019/6704834 |
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| author | Chicco D. M. Kayange Dalo Njera Stephen P. Nyirenda Louis Mwamlima |
| author_facet | Chicco D. M. Kayange Dalo Njera Stephen P. Nyirenda Louis Mwamlima |
| author_sort | Chicco D. M. Kayange |
| collection | DOAJ |
| description | Common beans (Phaseolus vulgaris) remain an important dietary protein source in Malawi. However, its production is highly hindered by insect pest and disease attack. The study aimed at evaluating the effectiveness of Tephrosia vogelii and Tephrosia candida extracts against bean aphid (Aphis fabae). The evaluation involved two botanical extracts at three different concentrations (0.5%, 2%, and 5% w/v) against bean aphid. Plant extracts (leaves) were air-dried and milled. Powders were then soaked in a 2-litre plastic bucket of cold water. Results indicated that there was significant difference (P<0.05) among treatments. The effectiveness of the treatments was based on reduction in aphid population per plant, pod length, and bean yield. Pod length and bean yield were higher in T. vogelii and Karate as compared to untreated and T. candida. There was a high mortality rate of aphid on the plots treated with T. vogelii compared to plots treated with T. candida at the same concentration. Though these two plant extracts were not as effective as the synthetic insecticide in reducing aphid population, they were considerably and significantly found to be effective; hence, its use by poor-resource farmers is recommended in the protection of bean against aphid. |
| format | Article |
| id | doaj-art-3a0ca6f7a86542a0a841ef71c693e397 |
| institution | Kabale University |
| issn | 2356-654X 2314-7539 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Agriculture |
| spelling | doaj-art-3a0ca6f7a86542a0a841ef71c693e3972025-02-03T01:11:59ZengWileyAdvances in Agriculture2356-654X2314-75392019-01-01201910.1155/2019/67048346704834Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in MalawiChicco D. M. Kayange0Dalo Njera1Stephen P. Nyirenda2Louis Mwamlima3Department of Land Resources Conservation, Mulanje District Agriculture Office, P.O. Box 49, Mulanje, MalawiDepartment of Forestry, Faculty of Environmental Sciences, Mzuzu University, Private Bag 201, Luwinga, Mzuzu 2, MalawiDepartment of Agricultural Research Services, Bvumbwe Agricultural Research Station, P.O. Box 5748, Limbe, MalawiDepartment of Agricultural Research Services, Mkondezi Agricultural Research Station, P.O. Box 133, Nkhata Bay, MalawiCommon beans (Phaseolus vulgaris) remain an important dietary protein source in Malawi. However, its production is highly hindered by insect pest and disease attack. The study aimed at evaluating the effectiveness of Tephrosia vogelii and Tephrosia candida extracts against bean aphid (Aphis fabae). The evaluation involved two botanical extracts at three different concentrations (0.5%, 2%, and 5% w/v) against bean aphid. Plant extracts (leaves) were air-dried and milled. Powders were then soaked in a 2-litre plastic bucket of cold water. Results indicated that there was significant difference (P<0.05) among treatments. The effectiveness of the treatments was based on reduction in aphid population per plant, pod length, and bean yield. Pod length and bean yield were higher in T. vogelii and Karate as compared to untreated and T. candida. There was a high mortality rate of aphid on the plots treated with T. vogelii compared to plots treated with T. candida at the same concentration. Though these two plant extracts were not as effective as the synthetic insecticide in reducing aphid population, they were considerably and significantly found to be effective; hence, its use by poor-resource farmers is recommended in the protection of bean against aphid.http://dx.doi.org/10.1155/2019/6704834 |
| spellingShingle | Chicco D. M. Kayange Dalo Njera Stephen P. Nyirenda Louis Mwamlima Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in Malawi Advances in Agriculture |
| title | Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in Malawi |
| title_full | Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in Malawi |
| title_fullStr | Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in Malawi |
| title_full_unstemmed | Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in Malawi |
| title_short | Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in Malawi |
| title_sort | effectiveness of tephrosia vogelii and tephrosia candida extracts against common bean aphid aphis fabae in malawi |
| url | http://dx.doi.org/10.1155/2019/6704834 |
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