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Showing items 1 through 9 of 36.-
Library ResourceJournal Articles & BooksDecember, 1983Africa, Western Africa
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Library ResourceJournal Articles & BooksDecember, 1983Liberia, Nigeria, Africa, Western Africa
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Library ResourceJournal Articles & BooksDecember, 1983Colombia, Central America, South America
In May 1980 the soil section of CIAT's cassava program established a fertilization trial with 3 cassava var. [Barranquena (regional), M Col 113, and CMC 921 to measure its effect on yield and establish optimum levels from an economical point of view. The trial took place in Mondomito and Agua Blanca, municipality of Santander de Quilichao, Cauca (Colombia). Twelve levels of NPK (0-0- 0; 0-100-100; 50-100-100; 100-100-100; 200-100-100; 100-0-100; 100- 50-100; 100-200-100; 100-100-0; 100-100-50; 100-100-200; 200-200- 200) were applied.
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Library ResourceJournal Articles & BooksDecember, 1983Colombia, Central America, South America
A guideline for carrying out regional trials in cassava is given, including necessary steps (identification of collaborators, selection of sites, identification of person in charge, planting and harvesting season, exptl. design, plot size, and border rows); the technology used (selection and treatment of cuttings, plant density, land preparation, planting position, application of herbicides and fertilizers, pest and disease control); necessary visits (a min. of 7); and final agronomic trials to determine optimum density and age of var. at harvest.
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Library ResourceJournal Articles & BooksDecember, 1983Colombia, South America, Central America
The management of cassava intercropping and its evaluation are described. Multiple cropping systems are defined: consecutive cropping and intercropping (mixed intercropping, row intercropping, strip intercropping, and relay intercropping). Basic biological and nutritional aspects of multiple cropping are analyzed and cassava intercropping systems practiced throughout the world (Latin America, Africa, and Asia) are described.
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Library ResourceJournal Articles & BooksDecember, 1983Colombia, South America, Central America
Due to the increasing extension of areas planted to cassava in tropical countries, the maintenance of biological equilibrium through adequate integrated control techniques becomes imperative as well as the collection of data on var. resistance, biological control, and cultural practices. Basic information for integrated pest control is given. Arthropods attacking cassava are described regarding yield losses, biology, morphology, and ecology. Criteria for the establishment of a control program on var.
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Library ResourceReports & ResearchDecember, 1983
Deals with water resource & its exploitation in tropical Africa from an engineering point of view, giving an insight into the wide range of problems in water development & providing general guidelines for future planning. Considers such issues as the mechanics of the hydrological cycle, the origins of wide variations in rainfall, the potential for water resources development in pastoral areas & low cost methods of exploiting these resources, & problems of water quality.
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Library ResourceConference Papers & ReportsDecember, 1983Kenya, Mali, Ethiopia, Africa, Eastern Africa, Western Africa
Describes the dif. phases in the ILCA research framework, w. regard to Livestock Systems Research (LSR), particularly the descriptive, diagnostic, design, testing & extension phases, using examples of field research on pastoral & agropastoral systems in the arid & semi arid zones of Mali, Ethiopia and Kenya.
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Library ResourceConference Papers & ReportsDecember, 1983
Discusses the importance of wealth differences among producers in traditional pastoral production systems, describing a rapid method, dependent on informants, for determining the wealth rank of producers within a given community in order to stratify a population of producers before sampling.
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Library ResourceConference Papers & ReportsDecember, 1983
Discusses the need for identifying sociological and economic possibilities for improvement in pastoral production systems, mentioning the major steps involved, particularly, identification of potential improvements, prediction of their likely impact on net production & quality of life; prediction of the probability of adoption; and assessment of the rapidity with which the improvements will bear fruit.
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