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Conference Paper 1988

Autor: Wortmann, Charles S. Zake, JYK

Results of research work carried out in Africa on the response of beans to NPK fertilizers, liming, S and other secondary/micronutrients, and organic manures are reviewed. Band or spot placement of P, fertilizer management in multiple crop systems, and correlations between soil data, yields, and ...

Enlace original: https://cgspace.cgiar.org/handle/10568/55964

Investigación en Agricultura
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Wortmann, Charles S. ,  Zake, JYK ,  [Review of bean responses to applied fertilizers in Africa] ,  Review of bean responses to applied fertilizers in Africa
Conference Paper 1993

Autor: Wortmann, Charles S.

Demands for food and fiber are increasing at a faster rate than supply in the medium and high altitude zones of Eastern Africa, while the productivity of the land is apparently declining. In many cases, productivity is constrained primarily by insufficient nutrient supply. To meet future demands ...

Enlace original: https://cgspace.cgiar.org/handle/10568/55713

Investigación en Agricultura
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Wortmann, Charles S. ,  [Research for sustainable agricultural production systems in high altitude zones of Eastern Africa] ,  Research for sustainable agricultural production systems in high altitude zones of Eastern Africa
Conference Paper 1993

Autor: Wortmann, Charles S.

This paper addresses considerations for agricultural technology evaluation at various levels. At the research level, considerations include the information need, the resources required to conduct the research and the probability of research success. At the field-level, agronomic feasibility and t...

Enlace original: https://cgspace.cgiar.org/handle/10568/55712

Investigación en Agricultura
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Wortmann, Charles S. ,  [Agricultural technology evaluation: some considerations] ,  Agricultural technology evaluation: some considerations
Conference Proceedings 1993

Autor: Wortmann, Charles S. Ransom, JK
Enlace original: https://cgspace.cgiar.org/handle/10568/56396

Investigación en Agricultura
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Wortmann, Charles S. ,  Ransom, JK ,  [Soil fertility research for maize and bean production systems of the Eastern Africa highlands : Proceedings of a workshop group meeting, Thika, Kenya, 1-4 September, 1992] ,  Soil fertility research for maize and bean production systems of the Eastern Africa highlands : Proceedings of a workshop group meeting, Thika, Kenya, 1-4 September, 1992

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