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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.Rey, M.E.C.Nawabu, H.[Approaches to diagnosis and detection of cassava brown streak virus (Potiviridae: Ipomovirus) in fieldgrown cassava crop]Approaches to diagnosis and detection of cassava brown streak virus (Potiviridae: Ipomovirus) in fieldgrown cassava crop

Background Inadequate protein intake is known to be deleterious in animals. Using WHO consensus documents for human nutrient requirements, the protein:energy ratio (P:E) of an adequate diet is > 5%. Cassava has a very low protein content. This study tested the hypothesis that Nigerian and Kenyan ...


Stephenson, K.Amthor, R.Mallowa, S.Nungo, R.Maziya-Dixon, B.B.Gichuki, S.Mbanaso, A.Manary, M.[Consuming cassava as a staple food places children 2-5 years old at risk for inadequate protein intake, an observational study in Kenya and Nigeria]Consuming cassava as a staple food places children 2-5 years old at risk for inadequate protein intake, an observational study in Kenya and Nigeria

In diagnostic surveys, Curvularia stem blight affected 9, 13, and 38% of cassava fields, respectively, in Benin, Ghana, and Nigeria. Disease incidence (number of plants with visible symptoms per total sampled) ranged between 0 and 80%, and severity (number of lesions) between 2 and 25 lesions per...


Msikita, W.Baimey, H.James, B.D.[Severity of curvularia stem blight disease of cassava in West Africa]Severity of curvularia stem blight disease of cassava in West Africa
Autor: Wendt, J.

Groundnut (Arachis hypogaea L) is an important intercrop in southern Cameroon. Two on-farm experiments were undertaken to determine if soil fertility constraints, varieties and tillage practices were major limiting factors in groundnut production. In Experiment I, combinations of P and K fertiliz...


Wendt, J.[Groundnut response to ash, phosphorus, potassium, lime, and tillage in southern Cameroon]Groundnut response to ash, phosphorus, potassium, lime, and tillage in southern Cameroon

Convolutional neural network (CNN) models have the potential to improve plant disease phenotyping where the standard approach is visual diagnostics requiring specialized training. In scenarios where a CNN is deployed on mobile devices, models are presented with new challenges due to lighting and ...


Ramcharan, A.McCloskey, P.Baranowski, K.Mbilinyi, N.Mrisho, L.Ndalahwa, M.Legg, J.P.Hughes, D.P.[A mobile-based deep learning model for cassava disease diagnosis]A mobile-based deep learning model for cassava disease diagnosis

Cassava is a main staple food for 800 million people world-wide. Production is limited by pest and pathogens. The most devastating cassava viruses are Cassava Brown Streak Virus and Uganda Cassava Brown Streak Virusboth causing severe root necrosis called Cassava Brown Streak Disease. In the last...


Bakelana, Z.Laura, M.B.Mahungu, N.Mavila, N.Matondo, M.Nlandu, N.Lunfuankenda, M.Tevo, N.Monde, G.Pita, J.,Lema, K.M.Kanana, T.[First report and preliminary evaluation of cassava root necrosis in Angola]First report and preliminary evaluation of cassava root necrosis in Angola

1. In cassava fields in Africa, population sex ratios of Epidinocarsis fopezi vaned from 0.44 (males to total parasitoids) at low host densities to highly male-biased ratios of 0.70 at high host densities. 2. This variability is caused by the difference in allocation of sons and daughters to host...


Dijken, M.J. vanNeuenschwander, P.Alphen, J.J.M. vanHammond, W.N.O.[Sex ratios in field populations of Epidinocarsis lopezi, an exotic parasitoid of the cassava mealybug, in Africa]Sex ratios in field populations of Epidinocarsis lopezi, an exotic parasitoid of the cassava mealybug, in Africa

Afternoon soil temperature of about 39°C observed at 5 cm depth under sole cassava (Manihot esculenta Crantz) early in the growing season was reduced by respectively 1.0, 1.3, 3.0 and 4.4°C by intercropping with maize (Zea mays L.), maize/okra (Abelmoschus esculentus Moench), maize/ egusi melon (...


Ikeorgu, J.E.G.Ezumah, H.C.[Some analytical aspects of cassava/maize/okra/egusimelon complex mixture: 1. Soli temperature in relation to leaf area variation]Some analytical aspects of cassava/maize/okra/egusimelon complex mixture: 1. Soli temperature in relation to leaf area variation

A highly significant relationship was found between the compressive strength of eight boiled cassava (Manihot esculenta Crantz) tuberous roots and their intercellular adhesion, as measured by a retained dry weight method, suggesting that compressive strength is a measure of cell separation. In ge...


Eggleston, G.Asiedu, Robert[Effect of boiling on the texture of cassava clones: a comparison of compressive strength, intercellular adhesion and physiochemical composition of the tuberous roots]Effect of boiling on the texture of cassava clones: a comparison of compressive strength, intercellular adhesion and physiochemical composition of the tuberous roots

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