Regular paperThe effect of the indigenous cultural practices of in-ground storage and piecemeal harvesting of sweetpotato on yield and quality losses caused by sweetpotato weevil in Uganda
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Exploring the yield gap of orange-fleshed sweet potato varieties on smallholder farmers’ fields in Malawi
2018, Field Crops ResearchCitation Excerpt :The correlation between weevil infestation and planting date (r = −0.27) and growing period (r = 0.20) suggest farmers can reduce weevil infestation by earlier harvesting. Studies in Cameroon (Parr et al., 2014) and Uganda (Smit, 1997) confirm that delayed harvesting increases weevil infestation. Since industrial processing of OFSP for human consumption is gaining momentum in Malawi and weevils are not tolerated, additional measures are needed to control weevils.
Soil insect crop pests and their integrated management in East Africa: A review
2018, Crop ProtectionCitation Excerpt :At optimal temperatures of 27–30 °C, C. formicarius completes its development from egg to adult in approximately 33 days, while C. puncticollis Boheman and C. brunneus Fabricius mature from egg to adult within 20–28 days and 32–41 days, respectively (Ames et al., 1996; Smit and Van Huis, 1998). Sweet potato yield loss due to Cylas sp. has been estimated at 73% (Smit, 1997a; 1997b). The maturation of C. sordidus from egg to adult takes 5–7 weeks (Bakyalire, 1992; Nankinga and Moore, 2010), and the associated maximum banana losses have been estimated at 100% (Gold et al., 2001).
Post-harvest handling practices and associated food losses and limitations in the sweetpotato value chain of southern Ethiopia
2017, NJAS - Wageningen Journal of Life SciencesCitation Excerpt :Sweetpotato weevils (Cylas puncticollis and C. brunneus) infestation is a challenge in the whole of Eastern Africa [30,31]. Examples from Uganda and Tanzania suggest that keeping roots underground for prolonged durations of the dry season leads to higher levels of weevil damage [30–32]. Results from the shelf life trials during marketing clearly demonstrated that wounds and cuts during harvesting and handling have a significant effect on susceptibility to post-harvest infection and weight loss.
Can sequential harvesting help small holder organic farmers meet consumer expectations for organic potatoes?
2010, Food Quality and PreferencePiecemeal versus one-time harvesting of sweet potato in north-eastern Uganda with special reference to pest damage
2007, NJAS - Wageningen Journal of Life Sciences