Advances in research of the soil and plant nutrition section of CIAT's Cassava Program in 1981 are given regarding symptoms of Ca and S deficiency, germplasm screening for adaptation to high acidity and/or low P; effect of fertilization (long-term fertility); level and time of K application; effe...
Different aspects related to deterioration, treatments to extend cassava root durability, and root storage practices are briefly reviewed. The initiation and subsequent level of deterioration of cassava roots is closely related to the presence of mechanical damage which is normally caused at harv...
Se revisan brevemente los diferentes aspectos relacionados con la deterioracion, los tratamientos para extender la durabilidad de las raices de yuca y las practicas de almacenamiento de las mismas. El inicio y el grado posterior de deterioracion de las raices esta estrechamente relacionado con la...
Wheatley, Christopher C.
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Lozano, C.
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Gómez, G.
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[Deterioracion postcosecha y almacenamiento de raices de yuca]
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Deterioracion postcosecha y almacenamiento de raices de yuca
Among the bacterial diseases that attack beans are (1) halo blight (Pseudomonas phaseolicola), which is distributed worldwide and survives in infected seeds and blunt residue. Three to five days after infection, water-soaked spots appear on the lower leaf surface, stem and pods; (2) bacterial wil...
Entre las enfermedades bacterianas que atacan el frijol tenemos: 1) anublo de halo (Pseudomonas phaseolicola) que se encuentra presente en todo el mundo, sobrevive en semillas infectadas y en residuos vegetales de los 3-5 dias despues de la infeccion aparecen manchas acuosas en el enves de la hoj...
Research on plant pathology carried out during 1981 emphasized the study of some epidemiological, etiological, and physiological factors related to the occurrence of the superelongation disease of cassava caused by Sphaceloma manihoticola. Dry-heat treatments (60 degrees Celsius for 14 days) brea...
During 1981 genotype evaluation and selection continued at the ICA (Instituto Colombiano Agropecuario)-Caribia and the ICA-CIAT- Carimagua stations and at CIAT-Palmira, considered representative sites, resp., of (1) low-input technology with medium to high fertility soils in hot, lowland tropics ...
Durante 1981 se continuo la evaluacion y seleccion de genotipos en ICA (Instituto Colombiano Agropecuario)-Caribia, ICA-CIAT- Carimagua y CIAT--Palmira que son sitios representativos, resp., de tecnologias de 1) bajos insumos en suelos de fertilidad intermedia- alta en el tropico calido de tierra...
During 1981 the analysis of the potential adoption and impact of improved cassava production technology was continued at various levels and included: farm-level studies of the profitability of improved technology and constraints to adoption; analysis of costs of processing and marketing; and rese...
Durante 1981 se continuo el analisis de la adopcion potencial y el impacto de la tecnologia mejorada en la produccion de yuca en varios niveles se incluyo: estudios sobre la rentabilidad de tecnologia mejorada en fincas y limitaciones para la adopcion; analisis de costos de procesamiento y mercad...
During 1981 the introduction of germplasm was continued with an additional 147 clones from Brazil in the form of aseptic meristem cultures. Cassava germplasm bank evaluation for adaptation, resistance to diseases and pests, yield, and root quality is in progress in the north coast of Colombia (Me...
Durante 1981 se continuo la introduccion de germoplasma, especialmente 147 clones de Brasil en la forma de cultivo de meristemos. Se siguio la evaluacion del banco de germoplasma de yuca por su adaptacion, resistencia a enfermedades y plagas rendimiento y calidad de las raices en la Costa Norte d...
Losses in root and planting material production caused by different pests as well as their biological control are evaluated. Studies of pests damaging dried cassava in storage were initiated. Biological aspects and form of attack of the following pests are described: stemborers (Lagochirus rogers...
The principal objective of on-farm trials is to provide feedback to the technology generation/var. improvement process. The trials carried out by CIAT and the Instituto Colombiano Agropecuario on farms in the Colombian regions of Huila, (10 farms in 1980 A), Antioquia (14 farms in 1979 A and 1980...
El objetivo principal de los ensayos a nivel de finca es proveer informacion de retorno al proceso de generacion de tecnologia y mejoramiento var. Se describen en detalle los ensayos realizados por el CIAT y el Instituto Colombiano Agropecuario en fincas de las regiones colombianas del Huila (10 ...
The principal objective of on-farm trials is to provide feedback to the technology generation/var. improvement process. The trials carried out by CIAT and the Instituto Colombiano Agropecuario on farms in the Colombian regions of Huila, (10 farms in 1980 A), Antioquia (14 farms in 1979 A and 1980...
El objetivo principal de los ensayos a nivel de finca es proveer informacion de retorno al proceso de generacion de tecnologia y mejoramiento var. Se describen en detalle los ensayos realizados por el CIAT y el Instituto Colombiano Agropecuario en fincas de las regiones colombianas del Huila (10 ...
International Center for Tropical Agriculture
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[Validación de tecnología mediante ensayos en fincas]
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Validación de tecnología mediante ensayos en fincas
