Author: North Carolina State University. Soil Science DeptPublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 640
Book Description
Agronomic-economic Research on Tropical Soils, Annual Report
Author: North Carolina State University. Soil Science DeptPublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 640
Book Description
Serials Currently Received by the National Agricultural Library, 1974
Author: National Agricultural Library (U.S.)Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1352
Book Description
Catalogue of Research Literature for Development: Food production and nutrition
Author: United States. Agency for International Development. Bureau for Technical AssistancePublisher:
ISBN:
Category : Agricultural assistance, American
Languages : en
Pages : 454
Book Description
Pasture Production in Acid Soils of the Tropics
Author: Pedro A. SanchezPublisher: CIAT
ISBN:
Category :
Languages : en
Pages : 504
Book Description
Micronutrients in Tropical Food Crop Production
Author: Paul L.G. VlekPublisher: Springer Science & Business Media
ISBN: 9400950551
Category : Nature
Languages : en
Pages : 264
Book Description
The mission of the International Fertilizer Development Center is to increase food production through the improvement of fertilizers and fertilizer practices for the developing countries with special emphasis on tropical and subtropical agriculture. The principal aim is to ensure that fertilizer technology is not a limiting factor to food production in those regions. Although the full extent to which deficiency of micronutrients hampers food production is yet un known, there is ample evidence that problem areas exist and more will be identified as crop production is intensified and marginal lands are exploited. Therefore, it seems fully appropriate at this time that IFDC, as an international organization, take a leadership role in developing micronutrient fertilizer technology appropriate for the tropics and subtropics. The gravity of micronutrient deficiency as a limiting factor to crop pro duction varies from crop to crop and from soil to soil. The effects may range from slight yield reductions to complete crop failure. While the economic impact of omitting micronutrients in seriously affected areas (e.g., Zn in Brazilian Cerrado) is convincing, it is difficult to estimate the yearly loss in crop production due to unsuspected micronutrient deficiency. Active soil and crop testing programs in regions with advanced agricultural systems are aimed at recognizing micronutrients as a limiting plant nutrient in time to allow corrective measures and prevent yield loss. Successful micronutrient monitoring systems are generally limited to developed economies or to developing economies producing export cash crops.
Bibliography of Soils of the Tropics: Tropics in general, and islands of Pacific and Indian Ocean
Author: Arnold Clifford OrvedalPublisher:
ISBN:
Category : Soils
Languages : en
Pages : 170
Book Description
Advances in Agronomy
Author: Publisher: Academic Press
ISBN: 0080563473
Category : Technology & Engineering
Languages : en
Pages : 501
Book Description
Advances in Agronomy
Parmana
Author: Anna Curtenius RooseveltPublisher: Academic Press
ISBN: 1483276554
Category : Social Science
Languages : en
Pages : 337
Book Description
Parmana: Prehistoric Maize and Manioc Subsistence along the Amazon and Orinoco argues for a reinterpretation of prehistoric subsistence in the Greater Amazonian region of South America. Based on the preliminary results of an archaeological fieldwork in Parmana of the Orinoco basin, Venezuela, the book re-evaluates some of the assumptions made by anthropologists about human adaptation and the development of aboriginal culture in Amazonia. Comprised of six chapters, this volume begins with a review of the theories of five scholars of aboriginal Amazonia in terms of logic and documentation: Julian Steward, Betty Meggers, Robert Carneiro, Donald Lathrap, and Daniel Gross. The next chapter presents an alternative theory, the hypothesis of technological change, and explains its theoretical framework. The demographic theory of cultural evolution is discussed, and its basis in general evolutionary theory is explained. Subsequent chapters focus on the empirical evidence for the hypothesis in studies of tropical resources, with emphasis on the productivity of tropical lowland soils and Amazonian faunal resources as well as the roles of maize and manioc in prehistoric Amazonian subsistence; the physical and biological characteristics of the Parmana region as an environment for prehistoric human adaptation; and the history of subsistence and population growth in prehistoric Parmana. The final chapter suggests possible directions for future research on the development of aboriginal culture in Amazonia. The book is illustrated with numerous maps, tables, and photographs, most of them never published before. This monograph should be of interest to archaeologists and anthropologists.
Bibliography of the Soils of the Tropics, Vol. 4
Author: Arnold Clifford OrvedalPublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 168
Book Description
Annual Report of the University Consortium on Soils of the Tropics
Author: University Consortium on Soils of the TropicsPublisher:
ISBN:
Category :
Languages : en
Pages : 180
Book Description