Download or read book The Influence of Tillage Inoculation and the Regulation of Symbiotic Nitrogen Fixation on the Production of Field Beans and the Mineralization of Nitrogen from Winter Annual Cover Crops written by Thomas Gordon Huntington and published by . This book was released on 1984 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field experiments were established at several locations in the. Dominican Republic in 1982 and 1983. Initial experiments evaluated the no-tillage cropping system in this subtropical invironment. Subsequent experiments examined the response of beans (Phaseolus vulgaris) to inoculation with improved strains of Rhizobium phaseoli and determined the influence of tillage and phosphorus fertilization on the inoculation response. The effectiveness of indigenous strains of Rhizobium phaseoli was compared with commercial inoculant and nitrogen fertilizer by evaluating the growth response of Phaseolus vulgaris in the greenhouse. Further investigations were designed to probe the limitatios to nitrogen fixation inherent in this association. The age-nitrogenase enzyme activity profiles of different host/endophyte combinations were characterized to distinquish wether temporal regulation or fixation rate was the primary limiting factor. An analysis of nitrogen mineralization from killed winter annual cover crops and subsequent nitrogen recovery by no-till corn was made in Princeton, Kentucky in 1982. Initial experiments in the Dominican Republic have demonstrated the adaptability of the no- tillage system to various soil and climact conditions. Grain yelds of red beans were not influenced by inoculation with Rhizobium. The response to inoculation was not influenced by tillage or phosphorus. It is tentatively concluded that this cultivar of P. vulgaris forms an ineffective symbiotic association with the limitations to fixation being genetic rather than envirommental. A wide range in fixation effectiveness between indigenous strains of R. phaseoli was observed. The most effective strains were asignificantly less effective than nitrogen fertilizer in supplying plant nitrogen requirements. Variability was observed between bean types in age- activity profile and the proportion of nitrogen fixation occurring after flowering sggesting the importance of temporal regulation of nodule activity in the effectivenes of different bean types. Comparisons btween effective and ineffective strains indicated that fixation rate was the most important factor controlling effectiveness between strains. In the study of nitrogen mineralization from winter annual cover crops it was demonstrated that the majority of nitrogen released during the corn growing season became available after corn silking, suggesting the potential for enhanced synchronization through careful management.

Download or read book Abstracts on Field Beans Phaseolus Vulgaris L written by Centro Internacional de Agricultura Tropical. Bean Information Center and published by . This book was released on 1976 with total page 1218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1985-03 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report for the Year Ending December 31 written by Kentucky Agricultural Experiment Station and published by . This book was released on 1983 with total page 1448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by Kentucky Agricultural Experiment Station and published by . This book was released on 1984 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report College of Agriculture Agricultural Experiment Station of the University of Kentucky written by Kentucky Agricultural Experiment Station and published by . This book was released on 1984 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: First- annual reports include also its Bulletins, no. 1-

Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agronomy News written by and published by . This book was released on 1985 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1984 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managing Cover Crops Profitably 3rd Ed written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.

Download or read book Symbiotic Nitrogen Fixation written by Rachid Serraj and published by CRC Press. This book was released on 2004 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Workshop on Biological Nitrogen Fixation for Increased Crop Productivity, Enhanced Human Health and Sustained Soil Fertility was held in June 2002 at ENSAM-INRA, Montpellier, France. The main goal of the workshop was to define research strategies for a Challenge Program initiative on Biological Nitrogen Fixation, and develop a pre-proposal based on the concept note submitted and approved by the CGIAR iSC. More than 35 participants from various scientific disciplines, research institutions and from four different continents (Africa, Asia, Americas and Europe) attended the workshop. This book, based on the proceedings of the workshop, takes a holistic approach to harnessing legume BNF technologies, starting from a socioeconomic perspective, and progressing to agronomic and genetic options, and bringing together innovative aspects and participatory research strategies.

Download or read book Agrindex written by and published by . This book was released on 1990 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1987 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Legume Nitrogen Fixation in Soils with Low Phosphorus Availability written by Saad Sulieman and published by Springer. This book was released on 2017-06-10 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thoughtful and provocative book provides a concise, up-to-date presentation of how current and projected future phosphorus scarcity will affect legume growth and their symbiotic nitrogen-fixing capabilities. It is a timely examination of the physiological and molecular responses of nodules to phosphorous deficiency in attempt to identify common principles. Students and researchers in the many disciplines related to crop productivity will find this title an exciting contribution in the area of plant stress physiology. The knowledge in this volume can also aid plant breeders, particularly through new methods of genetic engineering, in developing unique and adaptive cultivars with higher symbiotic efficiency. The awareness of the rapidly rising world population must translate into a parallel increase in agricultural production in order to sustain the growing population both now and in the future. Hence, the demand for food crops to produce proteins and vegetable oil for human consumption is going to increase considerably during the coming years. The essential role of legumes in agriculture is well-recognized, given the abundant levels of proteins and oils found in plants along with their enormous contribution to the sustainability of agricultural systems and human health. The capacity of legumes to fix nitrogen (N2) in partnership with rhizobia provides an input-saving and resource-conserving alternative, thereby reducing the need for chemical fertilizers while enhancing overall crop productivity. The use of N2-fixing legumes to produce plant proteins results in a substantial decrease in the consumption of fossil fuels and therefore also in the agricultural effects to global warming. However, a major constraint to legume production is low soil phosphorus (P) availability, considering that an overwhelming majority of the world’s soils are classified as P-deficient. Low-P availability is especially problematic for legumes, since legume nodules responsible for N2 fixation have a high P requirement. Therefore, this book explains how nodule N2 fixation responds to low P availability, which is crucial for improving legume production and maintaining agricultural sustainability in the context of the global P crisis.

Download or read book Enhancement of Biological Nitrogen Fixation of Common Bean in Latin America written by F.A. Bliss and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The common bean (Phaseolus vulgaris L.) is the most important pulse crop in Latin America, as well as in large parts of Asia and Africa. It is particularly important due to its ability, in symbiosis with Rhizobium bacteria, to fix atmospheric nitrogen and due to its high nutrient value. Incorporating contributions from plant breeders, microbiologists, plant physiologists and soil scientists, this volume reports the results of an FAO/IAEA Coordinated Research Programme (1985--1991), whose main objective was to enhance yield and biological nitrogen fixation in common bean by reducing its reliance on soil and fertilizer nitrogen. The volume will be invaluable to scientists working on biological nitrogen fixation and legume production.

Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1987 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Handbook on Symbiotic Nitrogen Fixation written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1993 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: General information on the symbiotic nitrogen fixation. Isolation, identification and counting of rhizobia. Production of an inoculant and inoculation of legumes. Experiments.