Download or read book Effects of Nitrogen Fertilization Level on the Quality of Wheat Triticum Aestivum L Seed written by Louhichi Brinis and published by . This book was released on 1982 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen in the Environment Sources Problems and Management written by R.F. Follett and published by Gulf Professional Publishing. This book was released on 2001-12-03 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen in the Environment: Sources, Problems, and Management is the first volume to provide a holistic perspective and comprehensive treatment of nitrogen from field, to ecosystem, to treatment of urban and rural drinking water supplies, while also including a historical overview, human health impacts and policy considerations. It provides a worldwide perspective on nitrogen and agriculture. Nitrogen is one of the most critical elements required in agricultural systems for the production of crops for feed, food and fiber. The ever-increasing world population requires increasing use of nitrogen in agriculture to supply human needs for dietary protein. Worldwide demand for nitrogen will increase as a direct response to increasing population. Strategies and perspectives are considered to improve nitrogen-use efficiency. Issues of nitrogen in crop and human nutrition, and transport and transformations along the continuum from farm field to ground water, watersheds, streams, rivers, and coastal marine environments are discussed. Described are aerial transport of nitrogen from livestock and agricultural systems and the potential for deposition and impacts. The current status of nitrogen in the environment in selected terrestrial and coastal environments and crop and forest ecosystems and development of emerging technologies to minimize nitrogen impacts on the environment are addressed. The nitrogen cycle provides a framework for assessing broad scale or even global strategies to improve nitrogen use efficiency. Growing human populations are the driving force that requires increased nitrogen inputs. These increasing inputs into the food-production system directly result in increased livestock and human-excretory nitrogen contribution into the environment. The scope of this book is diverse, covering a range of topics and issues from furthering our understanding of nitrogen in the environment to policy considerations at both farm and national scales.
Download or read book Effect of Nitrogen Fertilization of Wheat Triticum Spp on Chemical and Biochemical Composition and Performance of Seeds written by Adriel Edgardo Garay and published by . This book was released on 1975 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: High protein wheat seeds frequently perform better than low protein seeds of the same variety. Protein content of seeds can be increased by management practices, the most important of which is rate and timing of N applications. The purpose of this study was to determine the chemical, biochemical and physiological changes that occur in seeds as a result of nitrogen fertilization, and to relate these changes to seed performance. Seeds of Yamhill, Paha and Hyslop soft white winter wheat were produced with N applications of 0 to 450 kg/ha. Applications were made at planting, flower initiation, and anthesis. Supplemental irrigation was supplied. Applications of 150 and 300 kg N /ha increased the grain yield and protein yield per hectare, seed size, and percent and amount of protein per seed of Yamhill wheat. N applications caused several biochemical changes in the food reserve of the seeds. These included increases in the amounts of gluten, each amino acid studied and free amino acids. The amount of soluble sugars decreased slightly and starch remained constant with high rates of N.N also caused several biochemical changes in embryos. These included increases in: free amino acids and soluble sugars; protein concentrations and amount per embryo; ADP, ATP and energy charge. Regardless of protein concentration, the quantities of solubles and adenylate phosphates were higher in larger embryos. Biochemical changes in seedlings associated with N applications and higher protein content included: more sugars and free amino acids; higher amounts of ATP, ADP and total AP; and faster rate and higher net translocation of food reserves. Small seeds contained a higher concentration of ash, some mineral elements, soluble sugars and free amino acids. The total amount of these compounds per seed, however, was related to protein content and seed size. The large seeds with high protein concentration produced seedlings with the highest ADP, ATP and total AP content, energy charge and growth potential. Smaller seeds absorbed water and germinated faster than larger seeds. Seedlings from small seeds produced longer roots and shoots during the early stages of growth, but their growth rate was slower at later stages. High protein seeds of Hyslop, Paha and Yamhill outyielded low protein seeds by 12 to 17%. Yield differences were obtained when N was added to the crop, but not in the absence of added N. These and other studies indicate the potential for improving wheat seed and quality by applying specialized management practices for seed production rather than managing for grain production.
Download or read book Wheat written by E H Satorre and published by CRC Press. This book was released on 1999-05-06 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discussing the latest processes involved in researching yield generation, Wheat: Ecology and Physiology of Yield Determination will help you design various types of crop production systems for maximum yield. Featuring information on developing high-yielding, low-input, and quality-oriented systems, this book offers you both physiological and ecological approaches that will help you understand the crop as well as increase its production. Discussing aspects of wheat growth for specific regions around the world, Wheat provides you with information that will improve the size and quality of your crops, including: how temperature, vernalization, and the photoperiod affect the development of wheat using the correct amount of nitrogen fertilizers for wheat crops an explanation of the reproduction and nitrogen cycles of wheat how elements and conditions such as lipids, proteins, nitrogen, and climate enhance grain quality estimating and determining optimal sowing dates examining factors that may affect wheat yield-density relationships, such as planting arrangement and date of sowing preventing seed decay and examining effects of mildews and leaf blights examining historical trends of the crop to see what further research needs to be done You'll also receive information on the genetic gains in wheat research that are improving the physiological traits and numerical components of this essential grain. Within Wheat, you'll find data and methods from international experts in the field that will improve the yield and growth of the world's most important crop.
Download or read book Effects of Nitrogen on Yield and Grain Quality of Wheat Triticum Aestivum L Grown on a Red brown Earth Soil written by Joseph Adjei Adjetey and published by . This book was released on 1991 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Crops and Fertilizer on Soil Nitrogen Carbon and Water Content and on Succeeding Wheat Yields and Quality written by C. K. Mutchler and published by . This book was released on 1975 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biostimulants in Agriculture written by Youssef Rouphael and published by Frontiers Media SA. This book was released on 2020-03-24 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Effects of Nitrogen Fertilization on Triticum Aestivum L Em Thell written by Atiquallah Aiar and published by . This book was released on 1973 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Nitrogen Fertilizer and Two Drilling Methods on the Development Yield and Grain Quality of Wheat Triticum Aestivum L Thell written by Abdu Addahir Sajo and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Global Agricultural Trade And Developing Countries written by M. Ataman Aksoy And John C. Beghin and published by Manas Publications. This book was released on 2005 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global Agricultural Trade And Developing Countries Explores The Outstanding Issues In Global Agricultural Trade Policy And Evolving World Production And Trade Patterns. This Book Presents Research Findings Based On A Series Of Commodity Studies Of Significant Economic Importance To Developing Countries. Setting The Stage With Background Chapters And Investigations Of Cross-Cutting Issues, The Authors Describe Trade And Domestic Policy Regimes Affecting Agricultural And Food Markets And Analyze Product Standards And Compliance Costs And Their Effects On Agricultural And Food Trade. They Then Examine The Impact And Effectiveness Of Preferences And Review The Evidence On Attempts To Decouple Agricultural Support From Agricultural Output. Finally, They Assess The Potential Gains From Global Liberalization In Agricultural And Food Markets, And Their Sensitivity To Various Assumptions. Within This Broad Context Of Global Agricultural Policies And Reforms, The Authors Then Present Detailed Studies Of Commodity Markets That Feature Distorted Policy Regimes Among Industrial And Developing Countries Or That Are Important Contributors To Exports Of Developing Countries. The Book Will Aid Policymakers And Researchers In Approaching Global Negotiations And In Evaluating Domestic Policies On Agriculture. (Published In Collaboration With World Bank )
Download or read book Molybdenum Nitrogen and Phosphorus Fertilization of Wheat Triticum Aestivum L Em Thell in Arkansas written by Mohammad Reza Majedi and published by . This book was released on 1985 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Mineral Nutrition of Field Crops written by Nand Kumar Fageria and published by CRC Press. This book was released on 2010-10-19 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: By the year 2050, the world's population is expected to reach nine billion. To feed and sustain this projected population, world food production must increase by at least 50 percent on much of the same land that we farm today. To meet this staggering challenge, scientists must develop the technology required to achieve an "evergreen" revolution-one
Download or read book Effect of Planting Date and Nitrogenous Fertilization on Wheat written by Essam Esmail Esmail Kandil and published by LAP Lambert Academic Publishing. This book was released on 2012-06 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yield response of three wheat (Triticum aestivum L.) cultivars (Gemmieza 7, Sakha 93 and Giza 168) to various sowing times was studied during the two 2006/2007 and 2007/2008 seasons. Three sowing dates were 5th November, 20th November, and 5th December. A split-split plot design was used. Wheat plants were sown on 20th November gave the highest values of the most of characteristics such as plant height, leaf area index, crop growth rate, spike length, number of spikes m-2, 1000- kernel weight, grain yield (Mg ha-1), harvest index and protein grains content in both seasons. Increasing N- fertilization rates up to 288 kg N ha-1 led to increased growth parameters, yield and yield components. 288 kg N ha-1 recorded the highest values of the most parameters in both seasons. Gemmieza 7 had highest values for most of growth characters, yield and its components compared with the other cultivars (Sakha 93and Giza 168). Sowing on 20 Nov. with 288 kg N ha-1 had significantly increased on most studied characteristics. There was no fungal diseases infection as affected by different sowing dates and nitrogen fertilization level of the three wheat cultivars during two sowing seasons.
Download or read book Wheat Improvement Management and Utilization written by Ruth Wanyera and published by BoD – Books on Demand. This book was released on 2017-05-24 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Wheat Improvement, Management, and Utilization book covers some of the most recent research areas that touch on enhancement of wheat productivity. It is obvious that wheat is one of the major staple crops grown globally. This crop has widely been researched on considering that, for instance, it is afflicted by various abiotic and biotic stresses that limit its growth and productivity. Today?s goal of wheat improvement consistently is to develop varieties that are high yielding with good processing and technological qualities, well adapted and tolerant to prevailing biotic and abiotic stresses. Therefore, this is a valuable reference book on wheat improvement, agronomy, and end-use qualities, particularly for those who work in research organizations and higher academic institutions. Moreover, it provides an invaluable resource for readers interested in a quick review of trending topics in wheat.
Download or read book Effect of Nitrogen and Seed Rate on Quality of Wheat Triticum Aestivum L with CD Cpoy written by Prasada Rao Vaddarapu and published by . This book was released on 2006 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Postanthesis Irrigation and Nitrogen Fertilization on Grain Protein Concentration and Yield of Wheat Triticum Aestivum L written by Nathan David Duddles and published by . This book was released on 1987 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response of Winter Wheat Triticum Aestivum L Em Thell to Nitrogen and Chloride Fertilization in the Presence of Take all Root Rot Gaeumannomyces Graminis Var Tritici Walker written by Mohamed El Hadi Maatougui and published by . This book was released on 1984 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Response from nitrogen and chloride fertilization was measured in field experiments on winter wheat (Triticum aestivum L. Em. Thell. var. 'Stephens' and 'Yamhill') grown in western Oregon in an environment with a range of susceptibility to take-all root rot (Gaumannomyces graminis var. tritici Walker). Cropping sequences and expected disease severity considered in the study were: first year wheat after clover (low risk of severe take-all root rot: Nixon I experiment), second year wheat with high disease infection in the previous crop (high risk of severe take-all root rot: Keyt II experiment), second year wheat with low disease infection in the previous crop (moderate risk of severe take-all root rot: Nixon II and Coon experiment), third year wheat (high risk of severe take-all root rot: Jones experiment), fifth year wheat (high risk of severe take-all root rot: Keyt II experiment), and eighteenth year wheat (take-all decline established: the pathogen is present in the soil but does not cause damage, Evers experiment). Nitrogen treatments were applied at 0, 67, 134, and 202 kg/ha in all experiments where wheat followed wheat and at 0, 45, 90, and 134 kg/ha in the experiment where wheat followed clover. Chloride treatments were applied at 0, 45, and 90 kg/ha in all experiments and a rate of 134 kg C1/ha was also used on the Jones experiment. Nitrogen was predominantly supplied from urea while ammonium chloride supplied chloride and ammonium sulfate supplied the crop requirement for sulfur (about 20 kg/ha). Fertilizers were top-dressed in split application with chloride and sulfur containing fertilizers applied first (February) and urea applied later (March) in all experiments but those conducted in the Nixon farm where a single fertilizer was applied in March. Crop response was measured through the effects of N and c1 treatments on dry matter production, plant nitrogen content, plant nitrogen uptake and plant percent nitrogen recovery, as well as grain yield, yield components, grain nitrogen content, grain protein content, grain nitrogen uptake, and grain percent nitrogen recovery. The results of the study strongly indicated that take-all root rot was only a problem in the Jones, Keyt I, and Keyt II experiments and was most severe in third year wheat (Jones experiment). This also was the only experiment with significant (p = 0.05) response from rates of 202 kg N/ha. Nitrogen fertilization was the main factor that greatly influenced the levels of the variables studied while chloride fertilization generally did not have a significant (p = 0.05) influence. 134 kg N/ha was generally the rate accounting for the best levels of each variable studied in all experiments except in the Jones experiment as precised earlier. Crop response was also affected by a relatively long 'dry' period (April 20th to June 20th), particularly in the experiment where take-all root rot was a problem. Levels of the variables studied accounted for by the optimum rates of N were consistently higher in the experiments where take-all root rot was not a problem than where it was a problem by the following amounts: dry matter yields-17%, plant nitrogen contents-18%, plant nitrogen uptake levels-30%, plant nitrogen recoveries-28%, grain yields-22%, grain nitrogen contents-only 4%, grain protein contents-only 2%, grain nitrogen uptake levels-26%, grain nitrogen recoveries-18%, and spikes/m2-24%.
