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Author: T. C. Dougherty Publisher: Food & Agriculture Org. ISBN: 9789251037317 Category : Science Languages : en Pages : 92
Book Description
The aim of this publication is to provide guidance enabling personnel working in irrigation and drainage to take environmental impacts into account.
Author: T. C. Dougherty Publisher: Food & Agriculture Org. ISBN: 9789251037317 Category : Science Languages : en Pages : 92
Book Description
The aim of this publication is to provide guidance enabling personnel working in irrigation and drainage to take environmental impacts into account.
Author: Laia Domenech Publisher: Intl Food Policy Res Inst ISBN: Category : Social Science Languages : en Pages : 28
Book Description
Agriculture in Africa south of the Sahara (SSA) is still largely rainfed. SSA also exhibits the lowest crop yields for major staples in the world, largely due to low use of irrigation and fertilizer. Rainfed agriculture poses growing production risks with increased climate variability and change. At the same time, smallholder irrigation in the region developed rapidly over the past decade, albeit starting from very low levels. In addition to largely demand-driven irrigation development by smallholders, there is a significant push by donors for large-scale irrigation development, as well as some push for smallholder irrigation. There has also been a long-standing debate about whether irrigation in SSA should be large scale or small scale to achieve its potential. However, given the potentially high rewards, but also high possibility of failure, the assessment of irrigation potential must go beyond large scale versus small scale to integrate concerns regarding environmental sustainability, resource use efficiency, nutrition and health impacts, and womens empowerment. The hypothesis underlying this review paper is that how irrigation gets deployed in SSA will be decisive not only for environmental sustainability (such as deciding remaining forest cover in the region) and poverty reduction, but also for health, nutrition, and gender outcomes in the region. The focus of this paper is on the health, nutrition, and gender linkage. We find that to date, few studies have analyzed the impact of irrigation interventions on nutrition, health, and womens empowerment, despite the large potential of irrigation to affect these important variables. Irrigation interventions may have differential effects on different members in the household and in the community, such as irrigators, non-irrigators, children, and women. Measuring and understanding such differences, followed by improving design and implementation to maximize gender, health, and nutrition outcomes, could transform irrigation programs from focusing solely on increased food production toward becoming an integral component of poverty-reduction strategies.
Author: E. Barton Worthington Publisher: Elsevier ISBN: 148315971X Category : Business & Economics Languages : en Pages : 480
Book Description
Arid Land Irrigation in Developing Countries: Environmental Problems and Effects covers the proceedings of the International Symposium on Arid Land Irrigation, held in Alexandria, Egypt on February 16-21 1976. This book is organized into eight sections encompassing 46 chapters. The opening section deals first with the benefits of arid land irrigation and the effective use of water in irrigated agriculture. This section also tackles the public health and socio-economic impacts of irrigation, as well as the planning and managing of irrigation and drainage systems. The next section discusses the results of some case studies on arid land irrigation, such as in districts in Mexico, Iran, and Egypt. Other sections explore the influence of irrigation on changes in hydrological processes and cycle, soil fertility, water quality, and biological balances. The closing sections consider the human problems in irrigation areas, with an emphasis on the problem of schistosomiasis and malaria. These sections also look into the viewpoints of specialist agencies of the United Nations on arid land irrigation. This book will be of value to agriculturists, economists, and researchers.
Author: Dina L. Umali Publisher: World Bank Publications ISBN: 9780821325087 Category : Business & Economics Languages : en Pages : 98
Book Description
This paper presents a synthesis of 15 success stories in the production, processing, and marketing of high-value food products (HVF) in developing countries in Asia, Latin America, and Africa. High-value food products, such as fresh and processed fruits and vegetables, meats, fish, dairy products, and vegetable oils, are defined as having high intrinsic value or a high rate of value added through processing. Trade in these products has expanded while trade and prices for other agricultural products, such as most staple crops, have stagnated or declined. The growing trade in HVF has prompted policymakers in developing countries to examine more closely how they can expand and diversify their exports of these products. This study explores the technical, organizational, and commercial challenges facing those in HVF export development. It identifies common market and institutional factors that have contributed to the growth and international competitiveness in HVF trade. Particular note is made of the roles of the private and public sectors and of the effect of the policy environment. It examines the effect of institutional coordination on the stages of production, processing, and trade. An annex summarizes 12 case studies of the development and performance of food commodity markets. It includes export of fresh vegetables from Kenya in the 1960s, shrimp from Thailand in the 1970s, and processed tomatoes from Chile in the 1980s.
Author: Marinus G. Bos Publisher: Springer Science & Business Media ISBN: 1402089481 Category : Technology & Engineering Languages : en Pages : 186
Book Description
Irrigated agriculture produces about 40% of all food and fibre on about 16% of all cropped land. As such, irrigated agriculture is a productive user of resources; both in terms of yield per cropped area and in yield per volume of water consumed. Many irrigation projects, however, use (divert or withdraw) much more water than consumed by the crop. The non-consumed fraction of the water may cause a variety of undesirable effects ranging from water-logging and salinity within the irrigated area to downstram water pollution. This book discusses all components of the water balance of an irrigated area; evapotranspiration (Ch.2), effective precipitation (Ch.3) and capillary rise from the groundwater table (Ch.4). Chapter 5 then combines all components into a water management strategy that balances actual evapotranspiration (and thus crop yield) with the groundwater balance of the irrigated area (for a substainable environment). Chapter 6 presents CRIWAR 3.0, a simulation program that combines all water balance components into a single simulation procedure. The chapter describes the use of the CRIWAR software for developing water requirement tables and other useful information based on the selected water management strategy. This version greatly expands upon the capabilities of previously published programs.
Author: T. C. Dougherty
Author: T. C. Dougherty
Author: Pius Z. Yanda
Author: Laia Domenech
Author: E. Barton Worthington
Author: Pius Z. Yanda![Environmental Impact Assessment Guidelines for [name of Projects]: Irrigation and drainage projects PDF](https://books.google.com/books/content/images/frontcover/kzweAQAAIAAJ?fife=w80-h100)
Author: Malawi
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Author: Dina L. Umali
Author: Marinus G. Bos
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