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Author:
Publisher:
ISBN:
Category : Oregon
Languages : en
Pages : 482

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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 84

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Author: Margaret Basilia Guss
Publisher:
ISBN:
Category :
Languages : en
Pages : 92

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ISBN: 9789934145490
Category : Rural development
Languages : en
Pages : 512

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Author: North American Lake Management Society
Publisher: University of Wisconsin Press
ISBN:
Category : Business & Economics
Languages : en
Pages : 400

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Written for the lake user, this third edition testifies to the success and the leadership of EPA's Clean Lakes Program.

Author: KeShun Liu
Publisher: Springer
ISBN: 146151763X
Category : Technology & Engineering
Languages : en
Pages : 557

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The soybean [Glycine max (L. ) Merrill], a native of China, is one of the oldest crops of the Far East. For centuries, the Chinese and other Oriental people, including Japanese, Korean, and Southeast Asians, have used the bean in various forms as one of the most important sources of dietary protein and oil. For this reason and because the amount of protein produced by soybeans per unit area of land is higher than that of any other crop, this little old bean has been called "yellow jewel," "great treasure," "nature's miracle protein," and "meat of the field. " Now this bean is seen by some as a weapon against world hunger and a protein of the future. Most recently, the soybean has been touted as a possible weapon against chronic diseases. Since large-scale introduction to the Western world at the beginning of the twentieth century, the cultivation and use of soybeans have undergone a dramatic revolution: from traditional soyfoods in the Orient to a new generation of soyfoods in the West, from animal feed to value-added food protein ingredients, from industrial paints to affordable table oils and spreads, from an old field crop to a new crop with wide regions of adoptability, herbicide tolerance, pest resistance, and/or altered chemical composition, and from limited regional cultivation to expanded worldwide production.

Author: Nand Kumar Fageria
Publisher: CRC Press
ISBN: 1439867372
Category : Science
Languages : en
Pages : 471

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The Role of Plant Roots in Crop Production presents the state of knowledge on environmental factors in root growth and development and their effect on the improvement of the yield of annual crops. This book addresses the role of roots in crop production and includes references to numerous annual crops. In addition, it brings together the issues and the state-of-the-art technologies that affect root growth, with comprehensive reviews to facilitate efficient, sustainable, economical, and environmentally responsible crop production. Written for plant scientists, crop scientists, horticulturalists, and soil scientists, plant physiologists, breeders, environmental scientists, agronomists, and undergraduate and graduate students in different disciplines of agricultural science, The Role of Plant Roots in Crop Production: Addresses root architecture and development dynamics to help users improve crop productivity Emphasizes crop production, plant nutrition, and soil chemistry relative to root growth and functions Covers root morphology, root functions, nutrient and water uptake by roots, root-soil interactions, root-environment interactions, root-microbe interactions, physiology of root crops, and management practices to improve root growth Supports content with experimental results, and additional data is presented with pictures Increasing food production worldwide has become a major issue in the 21st century. Stagnation in grain yield of important food crops in recent years in developed, as well as developing, countries has contributed to a sharp increase in food prices. Furthermore, higher grain yield will be needed in the future to feed a burgeoning world population with a rising standard of living that requires more grain per capita. Technologies that enhance productivity, ensure environmental safety, and conserve natural resources are required to meet this challenge.

Author: J. Janick
Publisher: Springer Science & Business Media
ISBN: 1468488961
Category : Science
Languages : en
Pages : 411

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Plant breeding, the domestication and systematic improvement of crop species, is the basis of past and present agriculture. Our so called primitive progenitors selected practically all our present-day crop plants, and the improvement wrought through millenia of selection has so changed some of them that in many cases their links to the past have been obliterated. There is no doubt that this ranks among the greatest of human achievements. Although plant breeding has been a continuous empirical activity for as long as humans have forsaken the vagaries and thrill of hunting for the security and toil of agriculture, genetic crop improvement is now very much of a twentieth-century discipline. Its scientific underpinnings date to the beginning of this century with the discovery of Gregor Mendel's classic 1865 paper on the inheritance of seven characters in the garden pea. If any science can be traced to single event, the best example is surely found in the conception of modern genetics that appears in this single creative work. The relationship of plant breeding progress to advances in genetics has become closely entwined. Mendel himself was concerned with crop improvement and worked on schemes for apple and pear breeding. Plant breeding also has claims on other scientific and agricultural disci plines-botany, plant pathology, biochemistry, statistics, taxonomy, entomology, and cytology, to name a few-and has also impinged on our social, ethical, economic, and political consciousness.

Author: Malcolm J. Hawkesford
Publisher: John Wiley & Sons
ISBN: 047096068X
Category : Technology & Engineering
Languages : en
Pages : 512

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Book Description
Efforts to increase efficient nutrient use by crops are of growing importance as the global demand for food, fibre and fuel increases and competition for resources intensifies. The Molecular and Physiological Basis of Nutrient Use Efficiency in Crops provides both a timely summary of the latest advances in the field as well as anticipating directions for future research. The Molecular and Physiological Basis of Nutrient Use Efficiency in Crops bridges the gap between agronomic practice and molecular biology by linking underpinning molecular mechanisms to the physiological and agronomic aspects of crop yield. These chapters provide an understanding of molecular and physiological mechanisms that will allow researchers to continue to target and improve complex traits for crop improvement. Written by leading international researchers, The Molecular and Physiological Basis of Nutrient Use Efficiency in Crops will be an essential resource for the crop science community for years to come. Special Features: coalesces current knowledge in the areas of efficient acquisition and utilization of nutrients by crop plants with emphasis on modern developments addresses future directions in crop nutrition in the light of changing climate patterns including temperature and water availability bridges the gap between traditional agronomy and molecular biology with focus on underpinning molecular mechanisms and their effects on crop yield includes contributions from a leading team of global experts in both research and practical settings

Author: P. Graham
Publisher: Springer Science & Business Media
ISBN: 9401110883
Category : Science
Languages : en
Pages : 206

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During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant--microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research area of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programs.