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Autor: Kawano, Kazuo

Cassava has been changing its role from a traditional fresh human food to an efficient crop for animal feed and starch production. Nearly all cassava is grown by small farmers. Harvested roots are sold to animal feed or starch factories, or are used for on-farm feeding of pigs to be sold at the m...


Kawano, Kazuo[The role of improved cassava cultivars in generating income for better farm management]The role of improved cassava cultivars in generating income for better farm management

Several species of double-stranded RNA (dsRNA) were found to occur in the cassava clone Secundina, which was thought to be virus- free. A large dsRNA molecule (6.6 x 106 Mr = relative molecular mass)(L-dsRNA) was shown to be graft, but not mechanically transmitted and occurred primarily in a nucl...


Gabriel, C.J.WALSH, R.Nolt, Barry L.[Evidence for a latent viruslike agent in cassava]Evidence for a latent viruslike agent in cassava

A survey of weeds and weeding practices was carried out by a team of agricultural economists and agronomists on 283 farms in 5 cassava-growing regions of Colombia at 3 times during a cropping season. From 71-78 percent of the weed species present were broad- leaved species. As cassava grew older,...


Doll, J.Pinstrup-Andersen, PerDíaz, R.O.[An agro-economic survey of the weeds and weeding practices in cassava (Manihot esculenta Crantz) in Colombia]An agro-economic survey of the weeds and weeding practices in cassava (Manihot esculenta Crantz) in Colombia

Aspects related to breeding programs in cassava, the impact of past strategies and exptl results related to them are discussed. Even though sources of resistance have been identified for the majority of the diseases and pests, in addition to tolerance to adverse edaphic and climatic factors, it i...


Lozano, J.C.Byrne, D.Bellotti, Anthony C.[Cassava/ecosystem relationships and their influence on breeding strategy]Cassava/ecosystem relationships and their influence on breeding strategy

Studies on the translocation of the causal agent of cassava bacterial blight (considered to be a biotype of Xanthomonas manihotis) within the host tissues showed that this pathogen moves mainly through the xylem tissue. The primary stem symptoms appear on the green portion of the stem, but their ...


Takatsu, A.Lozano, J.C.[Translocacion del agente causal del anublo bacterial de la yuca (Manihot esculenta Crantz) en los tejidos del hospedero]Translocacion del agente causal del anublo bacterial de la yuca (Manihot esculenta Crantz) en los tejidos del hospedero
Autor: Lozano, J.C.

Bacterial blight of cassava is a serious problem in Central and South America and has been observed in parts of Africa. Symptoms include leaf spotting, wilting, dieback, gum exudation on young shoots, and vascular discoloration in mature stems and roots of susceptible cultivars. Dispersal by rain...


Lozano, J.C.[Bacterial blight of cassava]Bacterial blight of cassava

The importance of cassava cultivation in relation to other agricultural products of cassava-producing countries is briefly analyzed. The production, area and yields of cassava cultivation in all the production zones, and especially L.A. countries, were studied with the purpose of evaluating the i...

Se analiza brevemente la importancia del cultivo de la yuca en relacion con otros productos agricolas de los paises productores de yuca. Se estudia la produccion, el area y el rendimiento del cultivo de la yuca en todas las zonas productoras y en especial en paises latinoamericanos, con el propos...


Díaz Duque, R.O.[Caracteristicas de la produccion de yuca en el mundo con enfasis en America Latina]Caracteristicas de la produccion de yuca en el mundo con enfasis en America Latina

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