Download or read book Nitrogen Content of Wheat and Corn in Response to the Application of Urea and the Urease Inhibitor N n butyl Thiophosphoric Triamide written by Chalone S. Hefley and published by . This book was released on 2016 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing nitrogen (N) uptake by crops is a primary goal of many crop producers due to the direct relationship between crop N content and higher yields. In order to increase N uptake by crops, the application of N fertilizer, specifically urea, is often used. However, N in the soil can be extremely volatile and is easily lost to the atmosphere through ammonia (NH3) volatilization before it is able to be used by the intended crops. Urease, an enzyme found in the soil, is a major facilitator of the NH3 volatilization process. Urease inhibitors were developed in order to delay the volatilization of N from N fertilizers, allowing more of the N to infiltrate the topsoil, thereby giving crops the opportunity to absorb the plant available N. This study was performed in an attempt to evaluate the effects of the urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) on the harvested N content of wheat (Triticum aestivum L.) and corn (Zea mays L.) in the field. Six treatments, replicated four times each, were observed in completely randomized field plots each measuring 3.048 X 6.096 meters. The plots were treated with compost alone, compost treated with the NBPT-based inhibitor, N-YieldTM, urea alone, urea treated with N-YieldTM, urea treated with another NBPT-based inhibitor, Agrotain® (Ultra or Advanced, depending on the year), or were designated as a control group, wherein no fertilizer or urease inhibitor was applied. Once the crops reached maturity, they were harvested, and lab analyses were run on the dry matter harvested from each plot to determine nutrient values. In this study, N concentrations in wheat straw ranged from 0.64% in the control to 1.36% in the treatment containing urea treated with the NBPT-based inhibitor N-YieldTM, while N concentrations in wheat grain ranged from 2.09% in the control to 3.52% in the treatment containing urea treated with the NBPT-based inhibitor N-YieldTM. Similarly, N concentrations in the corn stover ranged from 0.81% in the compost treatment to 1.80% in the treatment containing urea treated with the NBPT-based inhibitor Agrotain®. However, the data analyzed in this study suggest that, in field conditions, while the application of urea fertilizer greatly increases N concentrations in wheat and corn, the addition of NBPT (whether Agrotain® or N-YieldTM) to urea before field application does not significantly increase N concentrations over that of urea alone.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1991 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agronomy Abstracts written by and published by . This book was released on 1991 with total page 898 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 1990 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dryland Agriculture written by Gary Peterson and published by . This book was released on 2006 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dryland agriculture is of more consequence now than ever because the world's dependence on food produced in dryland areas is even greater. In recognition of this, and the fact that global food supply is increasingly interconnected, this volume takes a world view of dryland production continent by continent. The initial chapters of the monograph address the principles that underlie all dryland farming, and are the basis for the following chapters that address dryland farming issues around the world.
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Efficiency Fertilizers written by Kathin Olson-Rutz and published by . This book was released on 2009 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Agricultural Index written by and published by . This book was released on 1990 with total page 2408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 2000 with total page 1808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Nitrogen Timing and Nitrification Inhibitors as Tools in Corn and Wheat Production in Kansas written by Timothy J. Foster and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: World population, together with the cost of crop production inputs, is increasing rapidly. The current seven billion people on earth are expected to reach nine billion by 2050 with resulting demands on world food production. In addition, the quality of our environment is being impacted by human activities, including agricultural production and crop fertilization. Nitrogen (N) management is the process of applying N fertilizers in a way to maximize use of N by crops, while minimizing loss to the environment. It is becoming imperative, as a means of increasing crop yields and food supplies, while reducing input usage, and minimizing the impact of N fertilization on the quality of our environment, that improved N application practices be identified and utilized. The objectives for this study were to compare the timing of anhydrous ammonia (AA) fertilizer N applications, fall and spring, with and without two different nitrification inhibitors (NI) as possible tools to enhance yield and Nitrogen Use Efficiency (NUE) in corn (Zea mays) and winter wheat (Triticum aestivum L.) in Kansas. Two different nitrification inhibitors were tested as alternatives, N-Serve (nitrapyrin) produced and marketed by Dow AgroSciences, and an experimental product under development by Koch Agronomic Services LLC. Three differing rates of the experimental product were used to assist in determining the optimal rate for this product. The study was conducted over two growing seasons, 2012 and 2013, which differed significantly in rainfall, rainfall distribution, and resulting NUE. Experiments were established at three sites for both crops in both years, on sites/soils selected for differing potentials for N loss, and mechanisms of N loss. One site was established at the Kansas State University Agronomy North Farm (N Farm), where yield potential was high, and N loss potential was low. A second site was established under irrigation at the Kansas River Valley Experiment Field near Topeka, KS (KRV), on a coarse silt loam soil with high potential for N loss through leaching. The third site was established at the East Central Kansas Experiment Field near Ottawa KS (ECK), on a clay pan soil with a high potential for denitrification loss. Weather conditions together with soil characteristics played a major role in the performance of N timing applications and impacted the response to the use of the inhibitors. In low N loss environments such as the N Farm, fall applications of AA to increase spring time-availability for producers showed minimal negative effects on yield or NUE. When combined with a nitrification inhibitor in the fall, performance was similar to spring application for both corn and wheat. At the KRV site leaching loss or potential loss from fall application was high for corn and wheat in both years, however little impact on NUE with NI use was observed. At the high ECK denitrification site, there was only one N loss potential event leading to inhibitor performance at Ottawa in corn in 2013.
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 2000 with total page 962 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 1992-10 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fertilizers and Environment written by Claudio Rodriguez Barrueco and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food production remains the highest agricultural priority, subject to the constraint that it be done in harmony with nature, or at least with minimum environmental pollution. The amount of fertilizer applied can be controlled using modern application techniques, including soil and crop management, guaranteeing higher economic profit and lower environmental cost. It is in such a context that the present book addresses the efficient and rational use of mineral and organic fertilizers while preserving environmental quality. The book discusses the impact on surface and groundwaters, soils and crops, and experience of nitrate leaching, denitrification, ammonia volatilization, heavy metal pollution, agricultural and urban waste management, and international and national legislation. Audience: Agronomists, environmentalists, soil and food chemists, ecologists, policy makers, and managers in the fertilizer industry concerned with the trend of public opinion.
Download or read book Effect of Source Rate and Time of Nitrogen Application on Yield and Protein Content of Wheat and Corn written by V. A. L. Sargeant and published by . This book was released on 1956 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Plant Nutrition written by Allen V. Barker and published by CRC Press. This book was released on 2016-04-19 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: The burgeoning demand on the world food supply, coupled with concern over the use of chemical fertilizers, has led to an accelerated interest in the practice of precision agriculture. This practice involves the careful control and monitoring of plant nutrition to maximize the rate of growth and yield of crops, as well as their nutritional value.
Download or read book Diversity of Bacterial Respiratory Systems written by Christopher Knowles and published by CRC Press. This book was released on 2018-01-18 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is the aim of this book to present reviews on a wide range of aspects of bacterial respiratory systems. Because the on-going publication elsewhere of reviews on bacterial respiration, ablanket coverage of the field has not been attempted. Rather, a range of topics have been selected, either because they are of special current interest, they have not been reviewed recently, or they have never been reviewed.
Download or read book Mitigation of Greenhouse Gas Emissions in Livestock Production written by Pierre J. Gerber and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2013 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current analysis was conducted to evaluate the potential of nutritional, manure and animal husbandry practices for mitigating methane (CH4) and nitrous oxide (N2O) - i.e. non-carbon dioxide (CO2) - GHG emissions from livestock production. These practices were categorized into enteric CH4, manure management and animal husbandry mitigation practices. Emphasis was placed on enteric CH4 mitigation practices for ruminant animals (only in vivo studies were considered) and manure mitigation practices for both ruminant and monogastric species. Over 900 references were reviewed; simulation and life cycle assessment analyses were generally excluded
