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1. Evaluation of Different Options: Host Plant Resistance, Weed Management, and Fertilization for the Development of an Integrated Pest Management Strategy for the Sweet Potato Weevil in Burkina Faso

Author

Koussoube, S., Ba Niango, M., Traoré, F., Dabire-Binso, CL., and Sanon, A.

Subjects
Cylas puncticollis, Resistant varieties, Hand weeding, Fertilizers, Burkina Faso, Agriculture
Abstract

The sweet potato weevil (SPW) (Cylas puncticollis) is a destructive pest feeding on the sweet potato in Burkina Faso. This weevil causes severe damage to the tuber, and the infested tuber is unsuitable for human consumption or animal feed. This problem calls for effective control management, especially for non-chemical approaches. A field experiment was carried out from 2012 to 2015 with the aim to develop management methods. Different control methods, including host-plant resistance, weeds management and crop fertilization, were tested. The results showed that two varieties, Zappalo-1 and Resisto were free of any SPW damage (0%) . Similarly, when plots were not weeded tubers of the BF11 variety were free of any SPW damage (0%). Finally, the combination of manure and mineral fertilizer significantly reduced the damage due to the SPW to score as low as 1 compare to 3.5 in the absence of manure. From the current study, it can be concluded that an integrated approach combining resistant varieties, good weeding practices and fertilizer application could be implemented to control the SPW in Burkina Faso.

Published
2018

3. Effectiveness of Spinosad (Naturalytes) in Controlling the Cowpea Storage Pest, Callosobruchus maculatus (Coleoptera: Bruchidae)

Author

Niango M. Ba, Barry Robert Pittendrigh, Clementine L. Binso-Dabire, and Antoine Sanon

Subjects
Ecology, biology, Weevil, Biological pest control, Spinosad, General Medicine, Pesticide, biology.organism_classification, Callosobruchus maculatus, Toxicology, chemistry.chemical_compound, Biopesticide, Deltamethrin, chemistry, Agronomy, Insect Science, medicine, PEST analysis, medicine.drug
Abstract

The biopesticide Spinosad controls many insect pests of stored-food products. Laboratory and field trials were carried out to determine the efficacy of this pesticide against the cowpea weevil, Callosobruchus maculatus (F.) (Coleoptera: Bruchidae), the main storage pest of cowpea, Vigna unguiculata, Walp, in West Africa. In the laboratory, Spinosad caused high mortality of adult C. maculatus and decreased the number of eggs laid by females. Spinosad, however, was less toxic in the 24 h treatment to C. maculatus than deltamethrin, an insecticide commonly used in Burkina Faso to control this insect. In "on-farm" experiments, Spinosad was effective in controlling C. maculatus. After 6 mo of storage, the number of insects emerging from cowpeas seeds was reduced by >80% by coating seeds with Spinosad but only by 43% by coating with deltamethrin. Less than 20% of the seeds were perforated in the Spinosad treatment compared with 29% for deltamethrin. Spinosad controlled C. maculatus throughout the 6 mo of cowpea storage whereas deltamethrin failed to control C. maculatus after 3 mo of storage. Spinosad has the potential to be more effective in controlling C. maculatus than deltamethrin.

Published
2010
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4. Effectiveness of spinosad (naturalytes) in controlling the cowpea storage pest, Callosobruchus maculatus (Coleoptera: Bruchidae)

Author

Antoine, Sanon, Niango M, Ba, Clementine L, Binso-Dabire, and Barry R, Pittendrigh

Subjects
Coleoptera, Drug Combinations, Insecticides, Food Preservation, Seeds, Animals, Fabaceae, Female, Macrolides
Abstract

The biopesticide Spinosad controls many insect pests of stored-food products. Laboratory and field trials were carried out to determine the efficacy of this pesticide against the cowpea weevil, Callosobruchus maculatus (F.) (Coleoptera: Bruchidae), the main storage pest of cowpea, Vigna unguiculata, Walp, in West Africa. In the laboratory, Spinosad caused high mortality of adult C. maculatus and decreased the number of eggs laid by females. Spinosad, however, was less toxic in the 24 h treatment to C. maculatus than deltamethrin, an insecticide commonly used in Burkina Faso to control this insect. In "on-farm" experiments, Spinosad was effective in controlling C. maculatus. After 6 mo of storage, the number of insects emerging from cowpeas seeds was reduced by80% by coating seeds with Spinosad but only by 43% by coating with deltamethrin. Less than 20% of the seeds were perforated in the Spinosad treatment compared with 29% for deltamethrin. Spinosad controlled C. maculatus throughout the 6 mo of cowpea storage whereas deltamethrin failed to control C. maculatus after 3 mo of storage. Spinosad has the potential to be more effective in controlling C. maculatus than deltamethrin.

Published
2010

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