Browsing by Author "Kankwatsa, P."

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    Dissemination of knowledge and skills of potato crop management through farmer field schools in Uganda
    (Uganda Journal of Agricultural Sciences, 2003) Hakiza, J. J.; Kakuhenzire, R.; Kankwatsa, P.; Arinaitwe, G.; Rukuba, D.; Ngombi, B.F.
    The Potato Program of the National Agricultural Research Organization (NARO) has generated a number of technologies on potato crop management for dissemination to farmers. Farmer field schools was one of the technology uptake pathways chosen through which farmers could “learn through discovery” the potato management practices with emphasis on controlling potato late blight. A survey was conducted through a structured questionnaire to assess farmers’ knowledge and skills prior to farmers’ enrolment in the schools. Sixteen schools were established in Kabale district with enrolment of at least 24 participants per school. A curriculum was then developed to cover 15 weeks following the crop phenology and farmers’ attendance in each school was restricted to once a week. Results from the survey revealed that potato was the third most importantfoodcropandthebestincomeearnerineachofthecommunitiessurveyed. Morethan80%of the farmers rated late blight and bacterial wilt as the two most important potato problems. More than 40% of farmers controlled late blight through chemical application. Host resistance and integrated disease management as late blight control measures were hardly known. Farmers identified disease monitoring as the most efficient and economic means of managing potato late blight as well as attainment of higher yields and good profits.
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    Efficacy of different fungicide spray schedules for control of potato late blight in Southwestern Uganda
    (Crop protection, 2003) Kankwatsa, P.; Hakiza, J.J.; Olanya, M.; Kidenamariam, H.M.; Adipala, E.
    Potato cultivars grown in Uganda have low levels of general resistance to late blight. As such, most commercial potato farmers rely on fungicide applications for control of Phytophthora infestans, the causal agent of late blight. This study investigated the comparative advantages of using different frequencies of application of Ridomil (MZ 58), Ridomil once and Dithane M-45 (Mancozeb, 80% WP) subsequently, and Dithane M-45 for management of potato late blight. The highest marginal benefit was achieved by applying Ridomil once and Dithane M-45 subsequently at intervals of 14 and 21 days. The lowest marginal benefit was with sole Ridomil application at 21 day spray interval. With weekly sprays it was more economical to apply Dithane M-45 than Ridomil first followed by Dithane M-45 subsequently.