Download or read book Soil Factors in Crop Production in a Semi arid Environment written by John Samuel Russell and published by Prentice Hall. This book was released on 1977 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agriculture in Semi Arid Environments written by A.E. Hall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: The semi-arid zones of the world are fragile ecosystems which are being sub stantially modified by the activities of mankind. Increasing human populations have resulted in greater demands on semi-arid zones for providing human susten ance and the possibility that this may enhance desertification is a grave concern. These zones are harsh habitats for humans. The famines that resulted from drought during the late 1960's and the 1970's in the African Sahel illustrated the unreliability of present agricultural systems in this zone. Large fluctuations in ag ricultural production have occurred in semi-arid zones of Australia, North Ameri ca, and the Soviet Union due to periodic droughts, even though considerable ag ricultural technology has been devoted to agricultural development in these zones. The challenge to mankind is to manage these different semi-arid zones so that pro ductivity is increased and stabilized, and environmental deterioration is decreased. Irrigation can be used to increase and stabilize agricultural production in semi-arid zones as discussed in Volume 5 of this series, Arid Zone Irrigation. The present volume, Agriculture in Semi-Arid Environments, focuses on dryland farming in semi-arid zones, and is relevant to the large areas of the world where rainfall is limiting and where water is not available for irrigation. This volume is designed to assist agricultural development in these areas and consists of reviews and analyses of available information by scientists working in Africa, Australia, and at the U ni versity of California.
Download or read book Soil Factors in Crop Produktion in a Semi arid Environment written by John Samuel Russel and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiarid Lands and Deserts written by J. Skujins and published by CRC Press. This book was released on 1991-04-16 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compendium of current information on arid soils. Provides a comprehensive background of the various soils and biota of arid regions, as well as a detailed account of the current understanding of degradation processes, and includes methodologies for arid land maintenance and rehabilitation and for
Download or read book Agriculture in Dry Lands written by I. Arnon and published by Elsevier. This book was released on 2012-12-02 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout history, man has, by over-use, consistently reduced the productive capacity of dry lands. This degradation of one-third of the land area of the globe is, unfortunately, increasing. In recent years, world interest has turned to the problems of pollution of the environment and the impending food shortage as world population grows explosively. Thus the attention of international and other agricultural bodies has turned to the need for preserving and developing more effectively the agricultural potential of these areas. This book provides a comprehensive review of present knowledge of the agriculture of dry lands, with special emphasis on measures for conserving their natural resources. Management practices are described which aim at optimizing productivity of rainfed and irrigated agriculture without adverse effects on sustainability. Land use in the dry regions, and its evolution throughout history is described and analysed, and the lessons to be learnt from destructive technologies are stressed. In particular, current proposals for an alternative agriculture are discussed and their justification is questioned. This is a generalist work, which specialists can also find interesting, not only in their own discipline but as a concise way of acquainting themselves with the state-of-the-art in associated fields. Increasing specialisation with each discipline using its own vocabulary leads inevitably to communication problems, and the need for multi-disciplinary teams makes inter-discipline communication indispensible.
Download or read book Farming Systems Principles for Improved Food Production and the Control of Soil Degradation in the Arid Semi arid and Humid Tropics written by United Nations Environment Programme and published by . This book was released on 1986 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiarid Lands and Deserts written by J. Skujins and published by CRC Press. This book was released on 1991-04-16 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compendium of current information on arid soils. Provides a comprehensive background of the various soils and biota of arid regions, as well as a detailed account of the current understanding of degradation processes, and includes methodologies for arid land maintenance and rehabilitation and for
Download or read book Water and Crop Growth written by A.K. Kolay and published by Atlantic Publishers & Dist. This book was released on 2008 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: No crop can be grown without being adequately supplied with the requisite amount of water at the proper time. A thorough knowledge of the hydrological cycle, amount and distribution of rainfall, water resources and irrigation projects in India facilitates efficient utilization of water for crop production. Inadequate supply of water to crops in semi-arid and arid regions adversely affects agricultural production. Properties of water, the mode of its entry into the soil and its absorption by roots of crops are important for irrigation. This necessitates accurate determination of the soil moisture content, the plants and available water which is essential for growth and yield of crops. Its deficiency adversely affects their growth and yield. Irrigation must be extended to unirrigated areas in order to increase the production of food, fibre and fodder for which we must know the source of irrigation water, units and methods of measurement of water, methods of irrigating crop fields, factors affecting the choice of irrigation methods, the degree of the suitability of the available water for irrigating crops and the factors affecting the suitability of water for irrigation. As water is a relatively scarce commodity, we must know whether water of a little inferior quality can be utilized to irrigate crops. In addition, we must be familiar with the precautions which need to be taken in this regard. The accumulation of excess water in the soils of the crop fields affects the growth of crops adversely enough to reduce their yields. Choice of the method of land drainage varies with the variation in the topography of the land. It is also necessary to rectify the causes of waterlogging to bring the waterlogged land back under the plough to increase agricultural production. This necessitates drainage investigation and laying out of the proper drainage system. Water requirement of crops depends on the climate and the crop. More water is required to produce crops in the arid region than in the humid region. Crops like paddy and sugar cane require much larger amount of water than finger millet and pearl millet. The book extensively deals with all these aspects related to soil and crop production and suggests measures to enhance productivity through water conservation and proper management of water resources. It will be highly useful for the students, teachers and researchers working in this field. Besides, agriculturists and general readers will also find it useful and informative.
Download or read book Rainfed Farming Systems written by Philip Tow and published by Springer Science & Business Media. This book was released on 2011-09-16 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt: While a good grasp of the many separate aspects of agriculture is important, it is equally essential for all those involved in agriculture to understand the functioning of the farming system as a whole and how it can be best managed. It is necessary to re-assess and understand rain-fed farming systems around the world and to find ways to improve the selection, design and operation of such systems for long term productivity, profitability and sustainability. The components of the system must operate together efficiently; yet many of the relationships and interactions are not clearly understood. Appreciation of these matters and how they are affected by external influences or inputs are important for decision making and for achieving desirable outcomes for the farm as a whole. This book analyses common rain-fed farming systems and defines the principles and practices important to their effective functioning and management.
Download or read book Drought resistant Soils written by Alexandra Bot and published by Food & Agriculture Org.. This book was released on 2005 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conference was organised to identify, describe, discuss and promote actions that will assist farmers to improve water-use efficiency in rainfed agriculture and drought-proof their systems. The publication contains an analytical sumary of the conference discussions, abstracts of papers submitted during the conference and discussion papers prepared to introduce the different topics. The full document is included on the accompanying CD-ROM.
Download or read book The Ecology of Tropical Food Crops written by M. J. T. Norman and published by Cambridge University Press. This book was released on 1995-05-18 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Retaining the successful formula of the first edition while placing additional emphasis on tropical environmental conservation, this new updated edition considers the response of tropical food crops to environmental factors such as climate, soil and farming system.
Download or read book Development of Rainfed Agriculture Under Arid and Semiarid Conditions written by Ted J. Davis and published by World Bank Publications. This book was released on 1986 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Intensification written by Jules N. Pretty and published by Routledge. This book was released on 2012-06-25 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continued population growth, rapidly changing consumption patterns and the impacts of climate change and environmental degradation are driving limited resources of food, energy, water and materials towards critical thresholds worldwide. These pressures are likely to be substantial across Africa, where countries will have to find innovative ways to boost crop and livestock production to avoid becoming more reliant on imports and food aid. Sustainable agricultural intensification - producing more output from the same area of land while reducing the negative environmental impacts - represents a solution for millions of African farmers. This volume presents the lessons learned from 40 sustainable agricultural intensification programmes in 20 countries across Africa, commissioned as part of the UK Government's Foresight project. Through detailed case studies, the authors of each chapter examine how to develop productive and sustainable agricultural systems and how to scale up these systems to reach many more millions of people in the future. Themes covered include crop improvements, agroforestry and soil conservation, conservation agriculture, integrated pest management, horticulture, livestock and fodder crops, aquaculture, and novel policies and partnerships.
Download or read book The Influence of Soils and Climate on Dry farming in Central Areas of the U S written by Oliver Martin Osborne and published by . This book was released on 1925 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Maintenance of Crop Production on Semi arid Soil written by Frederick John Sievers and published by . This book was released on 1927 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crop Production in Dry Regions Background and principles written by I. Arnon and published by . This book was released on 1972 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Fertility and Crop Production written by Kowligi R. Krishna and published by . This book was released on 2002 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil fertility and crop management are the two most important ingredients in modern agricultural activity. This text explores research in the area, which is driven by the need to spread cropping zones, to intensify and obtain higher yields, and to achieve better nutrient balance.
