Download or read book Soil Physical Conditions and Nitrogen Fixation of Soybeans Glycine Max Merrill Var Chippewa 64 written by Tsungmin Kuo and published by . This book was released on 1970 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of soil water suction and soil temperature on rates of transpiration, photosynthesis, respiration and nitrogen fixation of soybean (Glycine max. Merrill, var. Chippewa 64) seedlings was studied. A special apparatus was developed in which the soil water suction of several cells with soybeans growing in them could be maintained independently at a selected temperature. Transpiration was determined by a constant-water level device which recorded the amount of water used over a period of time. Photosynthesis and respiration were measured using an infra-red gas analyzer. The total nitrogen content of plants was measured by the micro-Kjeldahl method at the beginning and end of a ten-day experimental period. Leaf surface areas were determined with an air flow planimeter. In general with increasing soil temperature rates of transpiration, photosynthesis, and nitrogen fixation increased slowly at first and then rapidly until a certain optimum range was reached and decreased at higher temperatures. Maximum rates occurred around soil temperatures, of 30, 27 and 27°C, respectively. The rate of respiration also increased with increasing soil temperature until an optimum range around 27°C was reached and then dropped rapidly as the soil temperature further increased. Rates of photosynthesis, respiration, transpiration and N-fixation decreased steadily with increasing soil water suction. The decrease in the rate of these metabolic processes with increased soil water suction was attributed to effects of changes in viscosity and root cell permeability, stomatal movement and translocation of metabolic substrates. At low soil temperatures the dry matter accumulation seemed to be controlled by the water supply. At higher than optimum soil temperatures the dry dry matter accumulation was very sensitive-to temperature changes and less soil water dependent. When the nitrogen supply from the soil is limiting, the nitrogen fixation may possibly be a most important factor in the metabolic processes and thus the growth of leguminous plants. It is obvious that for such a plant, soil water availability, soil temperature and nodule rhyzobium organism-plant relationships are important.
Download or read book Bibliographic Series written by and published by . This book was released on 1960 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theses and Dissertations Oregon State University written by and published by . This book was released on 1973 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Affecting Symbiotic Nitrogen Fixation in Soybeans Glycine Max L Merr written by R. J. Lawn and published by . This book was released on 1973 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theses and Dissertations 1966 1970 Oregon State University written by Margaret Basilia Guss and published by . This book was released on 1973 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Fixation in High Yielding Soybean Glycine Max L Merr written by Fernando Salvagiotti and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybeans written by KeShun Liu and published by Springer. This book was released on 2012-12-06 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Nordic View to Sustainable Rural Development written by and published by . This book was released on 2015 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Lakes and Reservoirs written by North American Lake Management Society and published by University of Wisconsin Press. This book was released on 2001 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for the lake user, this third edition testifies to the success and the leadership of EPA's Clean Lakes Program.
Download or read book The Role of Plant Roots in Crop Production written by Nand Kumar Fageria and published by CRC Press. This book was released on 2012-07-23 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Plant Breeding Reviews written by J. Janick and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Leguminous Trees For Shade written by and published by Bib. Orton IICA / CATIE. This book was released on with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Handbook of Soybean Processing and Utilization written by D. R. Erickson and published by Elsevier. This book was released on 2015-08-25 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical Handbook of Soybean Processing and Utilization is a single source of information on all aspects of soybean processing and utilization written by experts from around the globe. Written in an easy-to-read format, this title covers a wide range of topics including the physical and chemical characteristics of soybeans and soybean products; harvest and storage considerations; byproduct utilization; soy foods; and nutritional aspects of soybean oil and protein. Compares soybeans to other vegetable oils as a source of edible oil products Presents a wide range of topics including chemistry, production, food use, byproduct use, and nutritional aspects Offers practical information ideal for soybean oil plant managers
Download or read book Edible Medicinal and Non Medicinal Plants written by T. K. Lim and published by Springer. This book was released on 2016-02-08 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers such plants with edible modified storage subterranean stems (corms, rhizomes, stem tubers) and unmodified subterranean stem stolons, above ground swollen stems and hypocotyls, storage roots (tap root, lateral roots, root tubers), and bulbs, that are eaten as conventional or functional food as vegetables and spices, as herbal teas, and may provide a source of food additive or neutraceuticals. This volume covers selected plant species with edible modified stems, roots and bulbs in the families Iridaceae, Lamiaceae, Marantaceae, Nelumbonaceae, Nyctaginaceae, Nymphaeaceae, Orchidaceae, Oxalidaceae, Piperaceae, Poaceae, Rubiaceae and Simaroubaceae. The edible species dealt with in this work include wild and underutilized crops and also common and widely grown ornamentals.To help in identification of the plant and edible parts coloured illustrations are included. As in the preceding ten volumes, topics covered include: taxonomy (botanical name and synonyms); common English and vernacular names; origin and distribution; agro-ecological requirements; edible plant parts and uses; plant botany; nutritive, medicinal and pharmacological properties with up-to-date research findings; traditional medicinal uses; other non-edible uses; and selected/cited references for further reading. This volume has separate indices for scientific and common names; and separate scientific and medical glossaries.
Download or read book The Molecular and Physiological Basis of Nutrient Use Efficiency in Crops written by Malcolm J. Hawkesford and published by John Wiley & Sons. This book was released on 2011-06-20 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Symbiotic Nitrogen Fixation written by P. Graham and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Soybean Diseases written by John Melvin Dunleavy and published by . This book was released on 1966 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook supersedes Circular 931, "Diseases of Soybeans."
