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Okonya, J.Kroschel, J.[Pest status and farmers' pest management practices in sweetpotato cropping systems of Uganda.]Pest status and farmers' pest management practices in sweetpotato cropping systems of Uganda.

Okonya, J.Kroschel, J.[Pest status and farmers' pest management practices in sweetpotato cropping systems of Uganda]Pest status and farmers' pest management practices in sweetpotato cropping systems of Uganda

Gamarra, H.Carhuapoma, P.Kreuze, J.F.Kroschel, J.[Sweet potato whitefly, Bemisia tabaci (Gennadius) biotype B.]Sweet potato whitefly, Bemisia tabaci (Gennadius) biotype B.

The present study presents the results of farmers’ field surveys of the sweetpotato butterfly, Acraea acerata Hew., and the two African sweetpotato weevils, Cylas puncticollis Boheman and C. brunneus F. infestation and damage. The objectives of this study were to determine (i) occurrence and dist...


Okonya, J.Kroschel, J.[Pest Status of Acraea acerata Hew. and Cylas spp. in sweetpotato (Ipomoea batatas (L.) Lam.) and incidence of natural enemies in the Lake Albert Crescent agro-ecological zone of Uganda.]Pest Status of Acraea acerata Hew. and Cylas spp. in sweetpotato (Ipomoea batatas (L.) Lam.) and incidence of natural enemies in the Lake Albert Crescent agro-ecological zone of Uganda.

Okonya, J.Mwanga, R.O.M.Syndikus, K.Kroschel, J.[Insect pests of sweetpotato in Uganda: farmers' perceptions of their importance and control practices.]Insect pests of sweetpotato in Uganda: farmers' perceptions of their importance and control practices.

Okonya, J.Kroschel, J.[Gender differences in access and use of selected productive resources among sweet potato farmers in Uganda.]Gender differences in access and use of selected productive resources among sweet potato farmers in Uganda.

Biotic constraints cause major crop losses and, hence, food insecurity in sub-Saharan Africa. This study documented the popularity, production constraints, pests and diseases, farmers’ perceptions on the severity of biotic constraints and the impact of related crop losses on household food securi...


Okonya, J.Ocimati, W.Nduwayezu, A.Kantungeko, D.Niko, N.Blomme, GuyLegg, J.P.Kroschel, J.[Farmer reported pest and disease impacts on root, tuber, and banana crops and livelihoods in Rwanda and Burundi.]Farmer reported pest and disease impacts on root, tuber, and banana crops and livelihoods in Rwanda and Burundi.

This paper evaluates the determinants of decision-making in relation to the production of four crops (banana, cassava, potato, and sweet potato). Understanding the division of labor and decision-making in crop management may lead to designing better interventions targeted at improving efficiency ...


Okonya, J.S.Mudege, Netsayi N.Rietveld, A.M.Nduwayezu, A.Kantungeko, D.Hakizimana, B.M.Nyaga, J.N.Blomme, GuyLegg, J.P.Kroschel, J.[The role of women in production and management of RTB crops in Rwanda and Burundi: Do men decide, and women work?]The role of women in production and management of RTB crops in Rwanda and Burundi: Do men decide, and women work?

It is increasingly becoming important to understand relationships between temperature (manifested at different altitude levels) and sweet potato insect pest characteristics in light of temperature changes as a result of global warming. Field surveys were conducted in Kabale district of Uganda alo...


Okonya, J.Kroschel, J.[Incidence, abundance and damage by the sweet potato butterfly (Acraea acerata Hew. and the African sweet potato weevils (Cylas spp.) across an altitude gradient in Kabale district, Uganda]Incidence, abundance and damage by the sweet potato butterfly (Acraea acerata Hew. and the African sweet potato weevils (Cylas spp.) across an altitude gradient in Kabale district, Uganda

In tropical Africa, the sweetpotato butterfly Acraea acerata, is a major endemic pest of sweetpotato (Ipomoea batatas (L.) Lam). Outbreaks of A. acerata are reported by farmers in Uganda to be more frequent than in the past 10 years. We therefore hypothesise that global warming may be responsible...


Okonya, J.Mujica, N.Carhuapoma, P.Kroschel, J.[Will global warming affect the distribution and abundance of the sweetpotato butterfly Acraea acerata Hew. in Africa?]Will global warming affect the distribution and abundance of the sweetpotato butterfly Acraea acerata Hew. in Africa?

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