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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...

Two expt. were carried out at CIAT-Palmira to assess maize//yam//cassava intercropping; species were planted alone or in double and triple combinations for a total of 11 treatments. Planting distances of 1.2 x 1.0 m, with furrows spaced at 1 m, were used for all 3 crops in monoculture as well as ...

En CIAT-Palmira se sembraron 2 expt. para evaluar el sistema de cultivo asociado maiz//name//yuca, en los que se sembraron las especies solas o en combinaciones dobles y triples para un total de 11 tratamientos. Se utilizaron distancias de siembra de 1.2 x 1.0 m en caballones espaciados a 1 m par...

The practice of treating cassava seed with chemicals was assessed on cassava growing farms in the departments of Cordoba, Sucre, Bolivar, and Atlantico (Colombia). On each farm the seed of cassava var. Venezolana was divided into 2 big lots: one of the lots was immersed in a solution of benomyl (...

En fincas de productores de yuca en los departamentos de Cordoba, Sucre, Bolivar y Atlantico (Colombia), se evaluo la practica de tratar la semilla de yuca con productos quimicos. En cada finca, la semilla de yuca var. Venezolana se dividio en 2 grandes lotes: uno de los lotes se sumergio en una ...

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 effect of storing cassava planting material on root productivity was assessed and the influence of the length of the storage period on the sprouting of cassava cuttings was determined in trials carried out in the municipalities of Betulia and Corozal (Sucre, Colombia). Cassava var. Regional V...

Se evaluo el efecto del almacenamiento del material de siembra en el rendimiento de raices de yuca y se determino la influencia de la duracion del almacenamiento en la brotacion de las estacas de yuca en ensayos realizados en los municipios de Betulia y Corozal (Sucre, Colombia). Se utilizo yuca ...

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...