The effect of microwaves on the eradication of fungal and bacterial pathogens in cassava sexual seed was investigated. Healthy mature fruits were collected and dried under ambient conditions. Seeds were selected according to specific wt. by placing them in a glass of water and discarding those th...
Lozano, J.C.
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Laberry, R.
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Bermudez, A.
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[Erradicacion de patogenos de semilla sexual de yuca (Manihot esculenta Crantz) mediante el tratamiento con microondas]
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Erradicacion de patogenos de semilla sexual de yuca (Manihot esculenta Crantz) mediante el tratamiento con microondas
Cassava vegetative material is distributed by sending seedlings obtained from meristem cultures in test tubes. Although this material is accepted worldwide, losses occur due to seedling weakness and the delay to obtain adult seedlings in the field (normally between 3 and 4 yr). To overcome this p...
Lozano, J.C.
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Laberry, R.
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[Nuevo metodo para transporte de material vegetativo indexado de yuca (Manihot esculenta Crantz)]
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Nuevo metodo para transporte de material vegetativo indexado de yuca (Manihot esculenta Crantz)
Data on max. and min. severity of attacks by Xanthomonas campestris pv. manihotis, Choanephora cucurbitarum, and Sphaceloma manihoticola were gathered on commercial plantations located in 4 regions of Sucre, Colombia. Regional clones Venezolana and Preta were used. In the region of Bongo, neither...
Laberry, R.
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Lozano, J.C.
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[Efecto del origen del material de siembra y el sistema de cultivo en la severidad e incidencia del anublo bacterial, el anublo fungoso y el superalargamiento de la yuca]
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Efecto del origen del material de siembra y el sistema de cultivo en la severidad e incidencia del anublo bacterial, el anublo fungoso y el superalargamiento de la yuca
The incidence and severity of several diseases affecting cassava in monoculture and in association with maize and/or yam in the departments of Cordoba, Bolivar, Sucre, and Atlantico (Colombia) were assessed. Leaf spots (brown leaf spot, white leaf spot, blight leaf spot) and CBB were the most com...
Laberry, R.
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Lozano, J.C.
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[Enfermedades en cultivos de yuca asociados con maiz y name en Cordoba, Bolivar, Sucre y Atlantico]
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Enfermedades en cultivos de yuca asociados con maiz y name en Cordoba, Bolivar, Sucre y Atlantico
The predominant farming system in La Colorada (Magdalena, Colombia), where cassava is a subsistence crop, is briefly reviewed. The intensive land use has caused soil leaching and infestation with root pathogens such as Diplodia manihotis and Fusarium oxysporum and cassava production has decreased...
Laberry, R.
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Lozano, J.C.
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Acosta, A.
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El Sharkawy, M.
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[Sistema integral de produccion de yuca para La Colorada (Magdalena) una zona infestada de Diplodia manihotis y Fusarium oxysporum]
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Sistema integral de produccion de yuca para La Colorada (Magdalena) una zona infestada de Diplodia manihotis y Fusarium oxysporum
The symptoms caused in cassava by Scytalidium sp. and Diplodia manihotis are described and compared. NE Brazil and the northern coast and Valle del Cauca of Colombia are zones with appropriate ecological characteristics for an optimum disease development. Scytalidium sp. affected both roots and s...
Bejarano, C.A.
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Laberry, R.
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Orrego, A.
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Lozano, J.C.
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[La pudricion negra de la yuca (Manihot esculenta) causada por Scytalidium sp]
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La pudricion negra de la yuca (Manihot esculenta) causada por Scytalidium sp