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A total of four sets of seeds (totalling 5526 seeds) were recieved from CIAT during the period 1990-1993. One set (comprising 1100 hybrid seeds) originated from the Thai-CIAT program in Rayong. Evaluation and selection of seedling clones has progressed satisfactorily, and culminated in the releas...

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, ...

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...

During the past 20 years, cassava agronomy research in China placed major emphasis on fertility maintenance, erosion control, planting methods, time of planting and harvesting, etc. Longterm fertilization trials conducted at GSCRI, CATAS and the Upland Crops Research Institute (UCRI) in Guangzhou...