Emphasis has been placed on the screening of hybrid selections for resistance to rust, anthracnose, BCMV and Empoasca sp., yield and sensitivity to photoperiod. A total of 1464 materials (937 selections from the breeding program) were screened in the Bean Team Nursery and 700 (200 breeding selections) in the Preliminary Yield Trial. Results from the latter demonstrated major gains in yield among colored materials and a very high proportion of lines resistant to BCMV. Many lines demonstrated multiple-disease resistance.
Resultados de la búsqueda
Mostrando ítems 1 a 9 de 8.-
Library ResourceArtículos de revistas y librosDiciembre, 1979
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Library ResourceMapasEnero, 1980África, Kenya
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Library ResourceArtículos de revistas y librosDiciembre, 1979Botswana, África, África austral
Survey on the economy of Botswana, w. emphasis on mining production, gross domestic product, prices, cereal production, and livestock and meat export.
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Library ResourceArtículos de revistas y librosDiciembre, 1979África, África occidental
Description of geographical aspects of the Subhumid Zone of West Africa and economic and sociological aspects of the Fulani ethnic group, w. emphasis on fodder resources, range management, livestock raising, livestock management, and animal diseases, w. analysis of land use & land development strategies, and directions for future research.
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Library ResourceArtículos de revistas y librosDiciembre, 1979
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Library ResourceInformes e investigacionesDiciembre, 1979Kenya, África, África oriental
Outlines of ranch development in various districts of Kenya w. description of geographical aspects of the districts, land use and tenure systems, human population and animal population trends, and livestock marketing activities, incl. maps showing ranch boundaries and status of land adjudication.
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Library ResourceArtículos de revistas y librosDiciembre, 1979América central, América del Sur
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Library ResourceArtículos de revistas y librosDiciembre, 1979Argelia, Francia, Bélgica, España, Israel, Bulgaria, Canadá, Irán, Pakistán, Tailandia, Estados Unidos de América, Japón, México, Trinidad y Tabago, Países Bajos, Sudán, Rumania
The pressing need for increased agricultural production in the years ahead can only be met by more efficient use of our land and water resources including more widespread and better irrigation in those regions where rainfall is inadequate. Production gains will be shortlived unless the attendant hazards of salinization, water logging and lowered fertility are kept in check by effective planning and management based on a thorough understanding of the soil conditions. Soil survey and land classification are generally accepted essential preliminaries to investment in irrigation development.
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