Download or read book Nitrogen Uptake and Fertilizer Use Efficiency by Spring Wheat Grown in Tilled and No tilled Soil written by Bobette C. Parsons and published by . This book was released on 1984 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Testing and Plant Analysis for Fertilizer Recommendations written by and published by . This book was released on 1996 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 29 (thesis year 1984) a total of 12,637 theses titles from 23 Canadian and 202 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 29 reports theses submitted in 1984, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Download or read book Recent Advances on Nitrogen Use Efficiency in Crop Plants and Climatic Challenges written by Hamada AbdElgawad and published by Frontiers Media SA. This book was released on 2023-08-25 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen (N) is a mineral nutrient that is essential for the normal growth and development of plants that is required in the highest quantity. It is an element of nucleic acids, proteins, and photosynthetic metabolites, therefore crucial for crop growth and metabolic processes. Recently, it was estimated that N fertilizers could meet the 48% demand of the world’s population. However, overuse and misuse of N fertilizers raised environmental concerns associated with N losses by nitrous oxide (N2O) emissions, ammonia (NH3) volatilization, and nitrate (NO3−) leaching. For instance, NH3 is a pollutant in the atmosphere, N2O is a greenhouse gas that has a warming potential 298 times higher than CO2 and contributes to ozone depletion, and NO3− causes eutrophication of water bodies. Agricultural practices account for about 90% of NH3 and 70% of N2O anthropogenic emissions worldwide. The efficient use of N chemical fertilizers can be attained through cultural and agronomic practices. Nitrogen use efficiency (NUE) is an important trait that has been studied for decades in different crops. The grain production or economic return from the per unit supply of N fertilizer simply explained the NUE. Several definitions were suggested by different researchers. NUE can be defined as the product of N uptake efficiency (NUpE) and N utilization efficiency (NUtE). An increase in NUE increases the yield, biomass, quality, and quantity of crops. N is generally applied as chemical fertilizer to the soil, whereas a small amount is added to some crops like grain legumes through the fixation process. On the other hand, crop plants take N through the root system in the form of nitrate or ammonium which is thereby used in different metabolic processes. A number of studies have been conducted to increase the NUE in different crops and it has been indicated that NUE can be improved by agronomic, physiological, biochemical, breeding as well as molecular approaches. Nitrogen is the main limiting nutrient after carbon, hydrogen, and oxygen for the photosynthetic process, phyto-hormonal and proteomic changes, and the growth-development of plants to complete their lifecycle. Excessive and inefficient use of N fertilizer results in enhanced crop production costs and atmospheric pollution. Atmospheric nitrogen (71%) in the molecular form is not available for the plants. For the world's sustainable food production and atmospheric benefits, there is an urgent need to upgrade nitrogen use efficiency in the agricultural farming system. Nitrogen losses are too high, due to excess amount, low plant population, poor application methods, etc., which can go up to 70% of total available nitrogen. These losses can be minimized up to 15–30% by adopting improved agronomic approaches such as optimal dosage of nitrogen, application of N by using canopy sensors, maintaining plant population, drip fertigation, and legume-based intercropping. Therefore, the major concern of modern days is to save economic resources without sacrificing farm yield as well as the safety of the global environment, i.e. greenhouse gas emissions, ammonium volatilization, and nitrate leaching.
Download or read book Nitrogen in Agricultural Systems written by James Stuart Schepers and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Review of the principles and management implications related to nitrogen in the soil-plant-water system.
Download or read book Crops as Enhancers of Nutrient Use written by R Duncan and published by Academic Press. This book was released on 2012-12-02 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crops as Enhancers of Nutrient Use examines the various plant and soil factors that contribute to nutrient use efficiency of plants. It attempts to address policies regarding Low Input Sustainable Agriculture (LISA), conservation-oriented cropping systems, and reductions in environmental contaminants. It also presents longer-term remedies to some of the inherent problems of high volume applications of expensive fertilizer nutrients. This book emphasizes plant-soil interaction, particularly, nutritional interactions involving rhizosphere, microbes, and stress on the root system. Stress factors include moisture and low and high pH. The book also covers the genetic and physiological response of plant to nutrients at the cellular level, on a whole-plant basis, and when subjected to stress. This book will contribute to the development of a more cost-effective and judicious nutrient usage of major crops.
Download or read book Durum Wheat Chemistry and Technology written by Michael Sissons and published by Academic Press. This book was released on 2016-04-27 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most extensive and comprehensive reference on durum wheat chemistry and technology ever available, this ambitious update to the first edition covers more diverse and interesting topics in a new expanded format. Forty-six contributors, each highly experienced and recognized as world authorities on durum wheat, provide the latest developments in scientific research and technology. All aspects of durum wheat are covered, from agronomy and the chemical composition of the grain, to the latest industrial approaches to processing durum wheat, as well as food safety and quality assurance issues. Expanded to include new topics like functional pasta, grain safety, and biotechnology, along with practical and applied information including a table of uses for specific carbohydrates, descriptions of improved laboratory techniques, and international comparisons of HACCP experiences, Durum Wheat: Chemistry and Technology, Second Edition is a must-have reference for professionals, students, and researchers inside and outside the field who want to learn about durum wheat technology and chemistry. New and Revised Topics Include: Agronomy of durum wheat production Pasta made from non-traditional raw materials: technological and nutritional aspects Grain safety assurance, including impacts on durum wheat trading Origin and distribution of durum wheat genetic diversity in the world Genetics and breeding of durum wheat Insect and mite pests and diseases of durum wheat Kernel components of technological value Vitamins, minerals, and nutritional value of durum wheat Durum wheat milling Manufacture of pasta products Other traditional durum derived products Methods used to assess and predict quality of durum wheat, semolina, and pasta Grading factors impacting on durum wheat and processing quality Grain safety assurance including impacts on durum wheat trading Marketing perspectives in the durum wheat trade Special Features: Detailed figures outlining the processes used to manufacture durum products International comparisons of HACCP experiences Table of uses for specific carbohydrates Descriptions of improved laboratory techniques Extensive bibliography An Essential Reference For: Scientists and researchers in agriculture and plant biology Professionals in the food industry who are processing durum wheat (millers, pasta makers, grain handling companies, and grain buyers) Government regulators Food scientists and technologists developing products using durum wheat Plant breeders University lecturers in agricultural science and plant biology Professionals who market wheat Nutritionists and medical practitioners interested in the impacts of food ingredients on human healthStudents Scientific libraries and their patrons
Download or read book Handbook of Soil Sciences Two Volume Set written by Pan Ming Huang and published by CRC Press. This book was released on 2018-10-03 with total page 2249 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evolving, living organic/inorganic covering, soil is in dynamic equilibrium with the atmosphere above, the biosphere within, and the geology below. It acts as an anchor for roots, a purveyor of water and nutrients, a residence for a vast community of microorganisms and animals, a sanitizer of the environment, and a source of raw materials for co
Download or read book Efficient Nitrogen Fertilizer Management to Improve Crop Production written by Li Wang and published by Frontiers Media SA. This book was released on 2024-05-22 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: The improvement in global crop production over the past several decades has been associated with increased use of nitrogen (N) fertilizer. However, on average, less than 50% of the nitrogen added to croplands globally is harvested as crop product. Inefficient use of N fertilizer by crops will result in substantial agricultural nitrogen losses, posing threats to human and ecosystem health. Crop production must increase dramatically to meet the growing demand for food and biofuels projected for 2050. To boost crop yield with lowered environmental cost, the use of high-potential crop cultivars and efficient nitrogen fertilizer management are required. Recent advances in N management practices, such as enhanced-efficiency fertilizer use, improved manure management and machine deep placement of fertilizer have opened up new strategies to achieve improved crop production with N use reduction. A better understanding of the key crop traits and regulatory processes in response to N fertilizer managements will facilitate the increase in crop yield, N use efficiency while minimizing impacts on the environment.
Download or read book Quick Bibliography Series written by National Agricultural Library (U.S.). Reference Division and published by . This book was released on 1992 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation Tillage January 1991 December 1993 written by Jane Potter Gates and published by . This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Soil Sciences written by Pan Ming Huang and published by CRC Press. This book was released on 2011-11-17 with total page 821 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evolving, living organic/inorganic covering, soil is in dynamic equilibrium with the atmosphere above, the biosphere within, and the geology below. It acts as an anchor for roots, a purveyor of water and nutrients, a residence for a vast community of microorganisms and animals, a sanitizer of the environment, and a source of raw materials for co
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 Cropping Systems written by Anil Shrestha and published by CRC Press. This book was released on 2004-02-13 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn the fundamentals as well as in-depth details of agricultural cropping systems from around the globe! Cropping Systems: Trends and Advances is a comprehensive review of past and present research efforts in North America and other parts of the world. It brings together biological, economic, sociological, and technical aspects of cropping systems in a single source to provide a reference unlike any other on the subject that is available today. This valuable book also points to future directions that cropping systems research needs to take in order to increase sustainable agriculture and feed the growing world population. Charts, tables, and illustrations make the information easy to access and understand. An ideal textbook for graduate and undergraduate courses in agronomy as well as a comprehensive reference for professionals involved in cropping systems research, Cropping Systems: Trends and Advances is a book you’ll refer to again and again. Topics covered in this well-referenced and thoughtfully indexed book include: emerging trends in cropping systems research designing resource-efficient cropping systems soil quality and fertility tillage root dynamics water quality concerns nitrogen use efficiency precision agriculture agricultural biotechnology weed biology and management integrated pest management the important role that cover crops can play key indicators for assessing nitrogen use efficiency in cereal-based agroecosystems the implications of elevated carbon dioxide-induced changes in agroecosystem productivity and a great deal more!
Download or read book Agronomy Abstracts written by and published by . This book was released on 1993 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of the annual meetings of the American Society of Agronomy; Soil Science Society of America; Crop Science Society of America ( - of its Agronomic Education Division).
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1968 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Plant Soil Nitrogen Management Strategies written by Sumera Anwar and published by Frontiers Media SA. This book was released on 2024-02-19 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
