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The main activity consisted of climatic data base validation and error correction. A sensitive technique of error detection was developed, based on the relative amplitudes of the high and low frequencies of the Fourier transform. The Bean Program desired to obtain a characterization and listing o...

La actividad principal se oriento a la validacion de la informacion climatica basica y a la correccion de errores; se desarrollo una tecnica sensitiva para detectar errores sobre la base de las amplitudes relativas de las frecuencias alta y baja del transformador Fourier. El programa deseaba obte...

Los objetivos basicos de la seccion de Produccion de Semillas del Programa de Pastos Tropicales del CIAT durante 1981, continuaron enfocados hacia la distribucion de semillas de lineas exptl. y de semilla basica y al estudio de factores seleccionados, en relacion con tecnologia de produccion de s...

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, ...

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...

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...

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 ...