Cassava brown streak disease (CBSD) has been a problem in the East African coastal cassava growing areas for more than 70 years. The disease is caused by successful infection with Cassava Brown Streak Virus (CBSV) (Family, Potyviridae: Genus, Ipomovirus). Diagnosis of CBSD has for long been prima...
Rwegasira, G.M.
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Rey, M.E.C.
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Nawabu, H.
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[Approaches to diagnosis and detection of cassava brown streak virus (Potiviridae: Ipomovirus) in fieldgrown cassava crop]
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Approaches to diagnosis and detection of cassava brown streak virus (Potiviridae: Ipomovirus) in fieldgrown cassava crop
Seeds of Striga asiatica and S. hermonthica were separated from soil using a wet sieve method with a 2.5 smallcap˜M sucrose flotation solution and 250- and 150-µm mesh screens. In 34 fields, the av. and range of seeds/100 g of soil were 8.2 and 0-75, resp. Seeds were recovered from 28 of the 34 f...
Chronic kidney disease of unknown (“u”) cause (CKDu) is a growing public health concern in Sri Lanka. Prior research has hypothesized a link with drinking water quality, but rigorous studies are lacking. This study assesses the relationship between nephrotoxic elements (namely arsenic (As), cadmi...
Rango, T.
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Jeuland, M.
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Manthrithilake, Herath
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McCornick, Peter G.
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[Nephrotoxic contaminants in drinking water and urine, and chronic kidney disease in rural Sri Lanka]
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Nephrotoxic contaminants in drinking water and urine, and chronic kidney disease in rural Sri Lanka
Discusses a practical non-destructive sampling procedure of experimental Napier grass populations (Pennisetum purpureum) which is determined by the number of stools per row of planted Napier grass, the number of tillers per stool and the number, height and thickness of each tiller, the latter bei...
Agricultural intensification to meet the food needs of the rapidly growing population in developing countries is negatively affecting the water quality. In most of these countries such as Ethiopia, information on surface and especially groundwater quality is lacking. This limits the measure that ...
Akal, Adugnaw T.
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Dagnew, D.C.
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Giri, S.
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Belete, M.A.
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Tilahun, Seifu A.
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Mekuria, Wolde M.
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Steenhuis, Tammo S.
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[Groundwater quality in an upland agricultural watershed in the sub-humid Ethiopian Highlands]
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Groundwater quality in an upland agricultural watershed in the sub-humid Ethiopian Highlands
Yams (Dioscorea spp.) are important crops in some West African locations. The West African yam collections held at the IITA were characterized using the standard descriptor list for this crop (IPGRI/IITA. 1997. Descriptors for yam (Dioscorea spp.). International Institute of Tropical Agriculture,...
Mahalakshmi, V.
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Ng, Q.
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Atalobhor, J.
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Ogunsola, D.
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Lawson, M.
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Ortiz, R.
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[Development of a West African yam Dioscorea spp. core collection]
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Development of a West African yam Dioscorea spp. core collection
Providing correct estimates of the carotenoid content of cassava varieties is very important in any cassava-breeding program for improving vitamin A intakes in sub-Saharan Africa especially among high-risk groups. The effect of different sampling methods-sampling with cork-borer(SPM1) and samplin...
Maziya-Dixon, A.
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Alamu, E.O.
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Dixon, A.
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[Variation in the evaluation of cis- and trans-<beta>-carotene in yellow-fleshed cassava (Manihot esculenta Cranz) varieties as a function of the storage root portion and sampling method]
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Variation in the evaluation of cis- and trans-<beta>-carotene in yellow-fleshed cassava (Manihot esculenta Cranz) varieties as a function of the storage root portion and sampling method
Banana Xanthomonas wilt is a systemic disease of banana plants. We investigated the risk of spreading Xanthomonas campestris pv. musacearum (Xcm) through asymptomatic mature bunches. Samples of banana fingers and rachis from markets within Kampala, Uganda and at border points of Uganda with DR Co...
Nakato, V.
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Beed, Fen D.
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Ramathani, I.
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Rwomushana, I.
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Opio, F.
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[Risk of banana Xanthomonas wilt spread through trade]
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Risk of banana Xanthomonas wilt spread through trade
The optimum sample size for assessment of nematode densities and related damage in East African highland banana was estimated at Kikoni parish in Ntungamo district, Uganda. Kikoni parish is at an elevation ranging from 1360 to 1480 meters above sea level and the East African highland banana (Musa...
Speijer, P.R.
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Ssango, F.
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Kajumba, C.
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Gold, C.S.
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[Optimum sample size for Pratylenchus goodeyi (Cobb) Sher and Allen density and damage assessment in highland banana (Musa AAA) in Uganda]
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Optimum sample size for Pratylenchus goodeyi (Cobb) Sher and Allen density and damage assessment in highland banana (Musa AAA) in Uganda
Repeated sampling of rural maize stores in Benin was conducted to evaluate published parameters of a sequential sampling plan for a negative binomial distribution to determine pest status for Prostephanus truncatus (Horn) and Sitophilus zeamais Motschulsky. A computer program was used to rerandom...
Meikle, W.G.
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Holst, N.
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Degbey, P.
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Oussou, R.
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[An evaluation of sequential sampling plans for the larger grain borer (Coleoptera: Bostrichidae) and the maize weevil (Coleoptera: Curculionidae) and of visual grain assessment in West Africa]
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An evaluation of sequential sampling plans for the larger grain borer (Coleoptera: Bostrichidae) and the maize weevil (Coleoptera: Curculionidae) and of visual grain assessment in West Africa