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Water Constraints To Corn Production In Central Brazil
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Book Synopsis Predicting Water Constraints to Productivity of Corn Using Plant-environmental Simulation Models by : Imo Werner Buttler
Download or read book Predicting Water Constraints to Productivity of Corn Using Plant-environmental Simulation Models written by Imo Werner Buttler and published by . This book was released on 1989 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The assumptions relating to the effect of water stress on crop growth inherent in the crop simulation model (Stockle & Campbell, 1985) used here, appear to be valid when applied to Cerrado conditions. Temperature and light effects on photosynthesis are considered in the calculation of a non-stressed photosynthetic rate, which is dependent on the amount of photosynthetically active radiation intercepted by the canopy. Thus, model predictions are sensitive to the predicted partitioning of potential evapotranspiration. Predicted leaf area indices and dry a matter accumulation over time compared well with measured data. Dry matter and leaf area were overpredicted in the most extreme water stress treatment, possibly due to soil fertility/water interactions not represented in the model. Harvest index was related more to water stress accumulated throughout the growing season, than to water stress accumulated during pollination, as was suggested by Stockle & Campbell (1985). Hourly predicted leaf water potential changes and corresponding changes in transpiration and photosynthetic rate represented the dynamics of water stress realistically and were consistent with expectations.
Book Synopsis A.I.D. Research and Development Abstracts by :
Download or read book A.I.D. Research and Development Abstracts written by and published by . This book was released on 1977 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intensified Systems of Farming in the Tropics and Subtropics by : J. A. N. Wallis
Download or read book Intensified Systems of Farming in the Tropics and Subtropics written by J. A. N. Wallis and published by World Bank Publications. This book was released on 1997-01-01 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmentally Sustainable Development Studies and Monographs Series No. 19. Five years have passed since the United Nations Conference on Environment and Development, better known as the Rio Earth Summit. Almost all the countries of the world attended the conference and committed themselves to the policies and programs laid out in Agenda 21, the action plan of the summit. The World Bank and other international agencies have sought to be active partners in implementing the agenda. This report is part of the Bank's current efforts to review the progress made over the past five years and to make plans for improved effectiveness for the future. The paper is divided into two parts. Part I looks at the broad picture, assessing some of the large challenges for the future and outlining thematic principles. Part II provides concise reviews of the majority of the chapters of Agenda 21 and relates them to the standpoint of Bank activities.
Book Synopsis Water Quality for Agriculture by : R. S. Ayers
Download or read book Water Quality for Agriculture written by R. S. Ayers and published by . This book was released on 1985 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Richtlijnen voor de werker in het veld om problemen te ondervangen ten aanzien van de waterkwaliteit voor irrigatie-doeleinden. Tenslotte worden praktijkervaringen uit diverse gebieden vermeld
Book Synopsis Proceedings of the Conference on Tropical Forestry Response Options to Global Climate Change by :
Download or read book Proceedings of the Conference on Tropical Forestry Response Options to Global Climate Change written by and published by . This book was released on 1990 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Agronomy written by and published by Elsevier. This book was released on 2000-01-10 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Agronomy continues to be recognized as a leading reference and a first-rate source of the latest and best research in agronomy. As always, the topics covered are varied and exemplary of the panoply of subject matter dealt with by this long-running serial.Volume 68 contains five outstanding and contemporary reviews on topics that deal with soil chemistry, plant physiology, plant nutrition, and soil and crop management. Chapter 1 by Morris Schnitzer summarizes the past and present knowledge of the chemistry of soil organic matter. Chapter 2, written by H.S. Saini and M.E. Westgate, is a comprehensive exposition on the reproductive development in grain crops during drought. G. Xu, H. Magen, J. Tarchitzky, and U. Kafkafi present advances in chloride management in Chapter 3. Chapter 4 is a review in our continuing series on the 12 soil orders. S.W. Buol and H. Eswaran provide an enlightening review on Oxisols. K. Kumar and K.M. Goh discuss aspects of crop residues in the fifth and final chapter of this important and well-written book.
Book Synopsis Latin America and the Caribbean by : Brian W. Blouet
Download or read book Latin America and the Caribbean written by Brian W. Blouet and published by John Wiley & Sons. This book was released on 2015-01-20 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Updated and revised with many new detailed maps and photographs, Latin America and the Carribbean: A Systematic and Regional Survey, 7th Edition enables geographers to explore the changes and major issues facing this dynamic region today. The historical material has been streamlined in order to focus on contemporary issues. A new chapter was written to focus on Brazil and the Amazonia region. Key environmental issues are highlighted in new boxes throughout the chapters.
Author :United States. Agency for International Development. Bureau for Technical Assistance Publisher : ISBN 13 : Total Pages :456 pages Book Rating :4.E/5 ( download)
Book Synopsis Catalogue of Research Literature for Development: Food production and nutrition by : United States. Agency for International Development. Bureau for Technical Assistance
Download or read book Catalogue of Research Literature for Development: Food production and nutrition written by United States. Agency for International Development. Bureau for Technical Assistance and published by . This book was released on 1976 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Agropastoral Systems for the Tropical Savannas of Latin America by : Elcio Perpétuo Guimarães
Download or read book Agropastoral Systems for the Tropical Savannas of Latin America written by Elcio Perpétuo Guimarães and published by CIAT. This book was released on 2004 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I: Agropastoral research in the tropical savannas of Latin America. Part II: Methodological aspects of agropastoral research. Part III: Crops and forages as components of agropastoral systems. Part IV: Potential of agropastoral systems for the sustainable management of the tropical savannas of South America. Part V: Acquired experiences and the road to the future.
Author :Food and Agriculture Organization of the United Nations Publisher :Routledge ISBN 13 :1136498877 Total Pages :332 pages Book Rating :4.1/5 (364 download)
Book Synopsis The State of the World's Land and Water Resources for Food and Agriculture by : Food and Agriculture Organization of the United Nations
Download or read book The State of the World's Land and Water Resources for Food and Agriculture written by Food and Agriculture Organization of the United Nations and published by Routledge. This book was released on 2013-06-17 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The State of the World's Land and Water Resources for Food and Agriculture is FAO's first flagship publication on the global status of land and water resources. It is an 'advocacy' report, to be published every three to five years, and targeted at senior level decision makers in agriculture as well as in other sectors. SOLAW is aimed at sensitizing its target audience on the status of land resources at global and regional levels and FAO's viewpoint on appropriate recommendations for policy formulation. SOLAW focuses on these key dimensions of analysis: (i) quantity, quality of land and water resources, (ii) the rate of use and sustainable management of these resources in the context of relevant socio-economic driving factors and concerns, including food security and poverty, and climate change. This is the first time that a global, baseline status report on land and water resources has been made. It is based on several global spatial databases (e.g. land suitability for agriculture, land use and management, land and water degradation and depletion) for which FAO is the world-recognized data source. Topical and emerging issues on land and water are dealt with in an integrated rather than sectoral manner. The implications of the status and trends are used to advocate remedial interventions which are tailored to major farming systems within different geographic regions.
Book Synopsis Soil, Water, and Crop Production by : David Wynne Thorne
Download or read book Soil, Water, and Crop Production written by David Wynne Thorne and published by . This book was released on 1979 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Famine Early Warning Systems and Remote Sensing Data by : Molly E. Brown
Download or read book Famine Early Warning Systems and Remote Sensing Data written by Molly E. Brown and published by Springer Science & Business Media. This book was released on 2008-05-06 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the interdisciplinary work of USAID's Famine Early Warning System (FEWS NET) and its influence on methodological and development policies in the US. This book describes FEWS NET's systems, methods and presents several illustrative case studies that will demonstrate the integration of both physical and social science disciplines in its work. The aim of this book is to bring the work of USAID's Famine Early warning System Network into the public domain.
Book Synopsis Limitations to Efficient Water Use in Crop Production by : Howard M. Taylor
Download or read book Limitations to Efficient Water Use in Crop Production written by Howard M. Taylor and published by . This book was released on 1983 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Reference Guide to Latin America and the Caribbean by : University Microfilms International
Download or read book A Reference Guide to Latin America and the Caribbean written by University Microfilms International and published by . This book was released on 1988 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Availability and Soil Suitability for Irrigation Water Impoundments in the Federal District of Brazil by : Jan Pruntel
Download or read book Water Availability and Soil Suitability for Irrigation Water Impoundments in the Federal District of Brazil written by Jan Pruntel and published by . This book was released on 1975 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estudos realizados durante um ano de precipitacao pluviometrica media demonstraram que um terco dessa precipitacao encaminha-se para a percolacao profunda. Esta agua e gradualmente liberada do reservatorio subterraneo e subsequentemente descarregada pelos rios e riachos, que sao as fontes mais importantes para irrigacao. A qualidade dessa agua para irrigacao e excelente. Durante a estacao chuvosa dispoe-se de abundantes quantidades de agua para irrigacao. As descargas minimas dos rios sao de 5 litros/seg por km2, no fim da estacao seca. Se fossem construidas instalacoes que servissem de reservatorio, esse volume poderia ser dobrado o que, talvez, permitisse a irrigacao de 5 a 10% do Distrito Federal. A agua subterranea poderia transformar-se em importante fonte de agua para irrigacao, principalmente em locais elevados. Ha nascentes que dispoem de agua para emprego imediato, principalmente, para irrigacao de areas de menor extensao. Ensaios de engenharia mostram alta infiltracao inicial e propriedades de permeabilidade dos solos que podem ser reduzidas por meio de compactacao em condicoes favoraveis de umidade.
Book Synopsis Agriculture in Brazil and Argentina by :
Download or read book Agriculture in Brazil and Argentina written by and published by DIANE Publishing. This book was released on with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Climate Change Risks in Brazil by : Carlos A. Nobre
Download or read book Climate Change Risks in Brazil written by Carlos A. Nobre and published by Springer. This book was released on 2018-09-25 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book maps extreme temperature increase under dangerous climate change scenarios in Brazil and their impacts on four key sectors: agriculture, health, biodiversity and energy. The book draws on a careful review of the literature and climate projections, including relative risk estimates. This synthesis summarizes the state-of-the-art knowledge and provides decision-makers with risk analysis tools, to be incorporated in public planning policy, in order to understand climate events which may occur and which may have significant consequences.
