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The principal activities carried out in 1986 in the nutrition and quality lab. are reported. A statistical analysis of all the parameters of acceptability on all bean materials evaluated in the lab. from 1981 to 1985 was executed. A joint project was carried out between CIAT and Instituto de Nutr...

Se informa sobre las principales actividades llevadas a cabo en 1986 en el lab. de nutricion y calidad. Se efectuo un analisis estadistico de todos los parametros de aceptabilidad en todos los materiales de frijol evaluados en el lab. desde 1981 hasta 1985. Se realizo un proyecto conjunto entre C...

On-farm research activities in 1986 continued in the areas of training, network establishment, methodology adaptation, technology development on-farm, and technology adaptation to specific areas. One early result is a better understanding of the variability in the adaptation of the newly adopted ...

Las actividades de investigacion en fincas en 1986 continuaron en las areas de capacitacion, establecimiento de redes, adaptacion de metodologias, desarrollo de tecnologias a nivel de finca y adaptacion de tecnologias a areas especificas. Un primer resultado constituye un mejor entendimiento de l...

The seventh testing cycle for promising CIAT selections under improved, low-input technology was completed in 1981 at 9 locations in Colombia. The overall av. yield of the trials was 8.5 t/ha/yr, which is nearly 3 times the national av. yield of 3-3.5 t/ha. Av. yield of local cv. was about twice ...

A detailed review on cassava production in intercropping systems is given, based on the following aspects: selection of plant types for intercropping; realtive planting time, planting density and pattern (spatial arrangement); mineral nutrition and fertilization, competition for nutrients; pest, ...

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...

A multisite trial (6 sites) was carried out to determine the optimum plant populations for one of the most important cropping systems used in the Lorica district (Cordoba, Colombia): maize associated with yam and intercropped with cassava. Plant populations of 1.2 x 1.0, 1.2 x 1.3, and 1.2 x 1.6 ...

Se realizo un ensayo multilocalizado (6 sitios) para determinar la densidad de poblacion optima del arreglo maiz asociado con name e intercalado con yuca, uno de los mas importantes en el Distrito de Lorica (Cordoba, Colombia). Se utilizaron densidades de poblacion de 1.2 x 1.0, 1.2 x 1.3 y 1.2 x...

The main results of research on different intercropping systems, including tobacco//cassava and yam x maize//cassava, are detailed. When cassava is intercropped with tobacco, tobacco yields are reduced by 24.3 percent but quality characteristics of leaves and no. of leaves/plant/harvest are not a...

Se detallan los principales resultados de investigacion sobre diferentes sistemas de cultivo intercalado, entre ellos tabaco//yuca y name x maiz//yuca. Cuando la yuca se intercala con tabaco, los rendimientos del tabaco se reducen en 24.3 por ciento pero no se afectan sus caracteristicas de calid...

The results of several expt. carried out at the Centro Regional de Investigacion El Carmen, with different arrangements of the cropping system yam x maize intercropped with cassava or other crops, are presented. Maize var. ICA V 155, yam var. Peludo, and cassava var. Venezolana were used, planted...

Se presentan los resultados de varios expt. realizados en el Centro Regional de Investigacion El Carmen, con diferentes arreglos del sistema name x maiz//yuca o otros cultivos. Se utilizaron maiz var. ICA V 155, name var. Peludo y yuca var. Venezolana. El name se sembro en forma manual a 1 m en c...

The profitability of different cropping arrangements with cassava, maize, and cowpea was determined in the municipalities of Betulia and Corozal (Sucre, Colombia). Cassava var. Venezolana (regional), maize var. ICA V.109, and cowpea Seleccion Palmira (bush type) were used. Cassava production rang...

Se determino la rentabilidad de diferentes arreglos bajo los cuales se puede cultivar yuca, maiz y caupi en los municipios de Betulia y Corozal (Sucre, Colombia). Se utilizaron yuca var. Venezolana (regional), maiz ICA V.109 y caupi Seleccion Palmira (arbustiva). La produccion de yuca vario entre...

Strategic management and competitive production of irrigated rice in Latin America Six strategic rice crop management practices, designed to increase the competitiveness of rice production in Latin America and the Caribbean, are described: (1) strategic planting date; (2) optimum planting density...

Se describen seis prácticas estratégicas de manejo del cultivo de arroz para hacer más competitiva su producción en América Latina y el Caribe: 1) fecha estratégica de siembra; 2) densidad óptima de siembra; 3) control de plagas (enfermedades e insectos dañinos); 4) fertilización precisa y equili...