Nitrogen and Irrigation Management to Reduce Nitrous Oxide Emissions in Corn Systems

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ISBN 13 : 9781339543277
Total Pages : pages
Book Rating : 4.5/5 (432 download)

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Book Synopsis Nitrogen and Irrigation Management to Reduce Nitrous Oxide Emissions in Corn Systems by : Hannah Waterhouse

Download or read book Nitrogen and Irrigation Management to Reduce Nitrous Oxide Emissions in Corn Systems written by Hannah Waterhouse and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture contributes ~58% of all global anthropogenic nitrous oxide (N2O) emissions, a potent greenhouse gas, and 33% of emissions from California agriculture are in the form of N2O. Nitrogen (N) fertilizer and irrigation management can affect N2O emissions from agricultural systems, however few field studies in California have been conducted. Field trials in the San Joaquin Valley were conducted over two years from 2013 to 2015 examining the influence of concentration ammoniacal N fertilizers, irrigation method, and nitrification inhibitors on N2O emissions and agronomic indices, such as yield and nitrogen use efficiency (NUE), in a corn system. In 2013, in the furrow-irrigated (FI) field, starter fertilizer (8 kg N/ha) and UAN32 fertilizer was side dressed at a rate of 218 kg N/ha, except for the high rate treatment where side dress fertilizer was applied at a rate of 334 kg N/ha. In 2014, in the FI field, starter N fertilizer (13 kg N/ha) and side dress UAN32 fertilizer (252 kg N/ha) was applied to all treatments, except for the high rate treatment (342 kg N/ha). To test the effects of concentration on N2O emissions, the same rate of N fertilizer was applied as a single band of fertilizer and compared to the same rate applied as two subsurface bands on either side of the plant row. Furthermore, this single band of fertilizer was then compared to a higher rate of N fertilizer that was split into two subsurface applied on either side of the plant row. To test the effects of irrigation management, a subsurface drip irrigated field where N was supplied via fertigation in 5 equal increments as UAN32 at 250 kg N/ha in both years was compared to the standard farmer's practice of two subsurface bands in the furrow irrigated field fertilized at a rate of 218 kg N/ha and 252 kg N/ha in 2013 and 2014, respectively. The nitrification inhibitor AgrotainPlus was applied with UAN32 in two subsurface bands across either side of the plant row and compared to the same rate of fertilizer applied without the inhibitor to elucidate the effect of this fertilizer technology on N2O emissions and nitrification as a source of N2O. Soil ammonium, nitrate, and nitrite samples were collected to understand the soil nitrogen dynamics underlying the pathways of N2O production. Concentrating fertilizer into one band increased emissions in both years with statistical differences found in the second year when the single band was placed in the bed. However, no effect on yield was found when comparing the banded treatments. Subsurface drip irrigation significantly reduced emissions in both years by ~50-78% and increased yields in the first year. Nitrification inhibitors also successfully reduced emissions by 60% when applied at the appropriate plant growth stage with no effect on yield suggesting that nitrification is a significant source of N2O in the absence of the inhibitor. These results suggest that fertilizer management strategies targeting N2O emissions from nitrification can significantly reduce the greenhouse gas footprint from ammonium-based fertilizer application.

Nitrous Oxide Emissions from California Tomato Cropping Systems Under Conventional and Alternative Management

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ISBN 13 : 9781267238979
Total Pages : pages
Book Rating : 4.2/5 (389 download)

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Book Synopsis Nitrous Oxide Emissions from California Tomato Cropping Systems Under Conventional and Alternative Management by : Taryn Lee Kennedy

Download or read book Nitrous Oxide Emissions from California Tomato Cropping Systems Under Conventional and Alternative Management written by Taryn Lee Kennedy and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Primarily associated with soil fertility management practices, nitrous oxide (N2O) is a potent greenhouse gas (GHG) whose emission from farmland is a concern for environmental quality and agricultural productivity. In California, agriculture and forestry account for 8% of the total GHG emissions, of which 50% is accounted for by N2O (CEC, 2005). Furrow irrigation and high temperatures in the Central Valley, together with conventional fertilization, are ideal for the production of food, but also N2O production. These conditions can promote N2O emissions, but also suggest great potential to reduce N2O emissions by optimizing fertilizer and irrigation management. Smaller, more frequent fertilizer applications increase the synchrony between available soil nitrogen (N) and crop N uptake and may result in less N loss to the atmosphere. Given that the ecosystem processes regulating the production of N2O respond to and interact with multiple factors influenced by environmental and managerial conditions, it is not always feasible to approach the study of integrated agricultural systems and their affect on GHG emissions by use of a factorial experiment alone. On-farm studies are therefore an important precursor to research station trials to determine which management practices and components of a complete management system should be targeted and isolated for future study. Farm-based trials also provide a realistic evaluation of current management practices subject to practical and economic constraints. The following study took place on existing farms in order to assess the effect of active, operational farm field conditions and current managements on GHG emissions and to thoroughly characterize two typical management systems. In this study, I determined how management practices, such as fertilization, irrigation, tillage, and harvest, affect direct N2O emissions in tomato cropping systems under two contrasting irrigation managements and their associated fertilizer application method, i.e. furrow irrigation and knife injection (conventional system) versus drip irrigation, reduced tillage, and fertigation (integrated system). Field sites were located on two farms in close proximity, on the same soil type, and were planted with the same crop cultivar. This project demonstrated that shifts in fertilizer and irrigation water management directly affect GHG emissions. More fertilizer was applied in the conventional system (237 kg N ha−1 growing season−1) than the integrated system (205 kg N ha−1 growing season−1). The amount of irrigated water was comparable between the two systems; 64 to 70 cm was applied in the conventional system and 64 cm in the integrated system. Total weighted growing season emissions were 3.4 times greater in the conventional system (2.39 ± 0.17 kg N2O-N ha−1) than the integrated system (0.58 ± 0.06 kg N2O-N ha−1), with a higher tomato yield in the integrated system (131 vs. 86 Mg ha−1). The highest conventional N2O emissions resulted from fertilization plus irrigation events and the first fall precipitation. In the integrated system, the highest N2O fluxes occurred following harvest and the first fall precipitation. Environmental parameters of soil moisture, soil mineral N, and dissolved organic carbon (DOC) were higher and more spatially variable in the conventional system. Reduced N2O emissions in the integrated system, resulting from low soil moisture, mineral N concentrations, and DOC levels, imply that improved fertilizer and water management strategies can be effective in mitigating greenhouse gas emissions from agriculture.

Nitrogen in the Environment: Sources, Problems and Management

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Publisher : Gulf Professional Publishing
ISBN 13 : 0080537561
Total Pages : 539 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Nitrogen in the Environment: Sources, Problems and Management by : R.F. Follett

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.

Nitrogen in the Environment

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Publisher : Elsevier
ISBN 13 : 0080569897
Total Pages : 719 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Nitrogen in the Environment by : J.L. Hatfield

Download or read book Nitrogen in the Environment written by J.L. Hatfield and published by Elsevier. This book was released on 2008-08-28 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is one of the most critical elements for all life forms. In agricultural systems it is essential 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. Nitrogen in the Environment provides a wholistic perspective and comprehensive treatment of nitrogen. The scope of this book is diverse covering a range of topics and issues related to furthering our understanding of nitrogen in the environment at farm and national levels. Issues of nitrogen from its effects on crops and human nutrition to nitrogen in ground water, watersheds, streams, rivers, and coastal marine environments are discussed to provide a broad view of the problem and support scientists, researchers, and engineers in formulating comprehensive solutions. - The only source which presents an international, wholistic perspective of the effects of nitrogen in the environment with worldwide mitigation practices - Provides details on how to improve the quality of the environment by analyzing the development of emerging technologies - Develops strategies to be used by soil scientists, agronomists, hydrologists, and geophysicists for broad scale improvement of nitrogen efficiency

Soil Microbiology, Ecology and Biochemistry

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Publisher : Academic Press
ISBN 13 : 0123914116
Total Pages : 603 pages
Book Rating : 4.1/5 (239 download)

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Book Synopsis Soil Microbiology, Ecology and Biochemistry by : Eldor Paul

Download or read book Soil Microbiology, Ecology and Biochemistry written by Eldor Paul and published by Academic Press. This book was released on 2014-11-14 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth edition of Soil Microbiology, Ecology and Biochemistry updates this widely used reference as the study and understanding of soil biota, their function, and the dynamics of soil organic matter has been revolutionized by molecular and instrumental techniques, and information technology. Knowledge of soil microbiology, ecology and biochemistry is central to our understanding of organisms and their processes and interactions with their environment. In a time of great global change and increased emphasis on biodiversity and food security, soil microbiology and ecology has become an increasingly important topic. Revised by a group of world-renowned authors in many institutions and disciplines, this work relates the breakthroughs in knowledge in this important field to its history as well as future applications. The new edition provides readable, practical, impactful information for its many applied and fundamental disciplines. Professionals turn to this text as a reference for fundamental knowledge in their field or to inform management practices. - New section on "Methods in Studying Soil Organic Matter Formation and Nutrient Dynamics" to balance the two successful chapters on microbial and physiological methodology - Includes expanded information on soil interactions with organisms involved in human and plant disease - Improved readability and integration for an ever-widening audience in his field - Integrated concepts related to soil biota, diversity, and function allow readers in multiple disciplines to understand the complex soil biota and their function

Measured and Daycent- Simulated Nitrous Oxide Emissions from Soil Planted to Corn in Dairy Cropping Systems

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Measured and Daycent- Simulated Nitrous Oxide Emissions from Soil Planted to Corn in Dairy Cropping Systems by : Maria Ponce De Leon Jara

Download or read book Measured and Daycent- Simulated Nitrous Oxide Emissions from Soil Planted to Corn in Dairy Cropping Systems written by Maria Ponce De Leon Jara and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Crop rotations, organic nutrient amendments, reduced tillage practices, and integration of cover crops are practices that have the potential to increase the sustainability of crop production, yet they also impact nitrous oxide (N2O) emissions. Agricultural soil management has been estimated to contribute 79% of the total N2O emissions in the U.S., and inorganic nitrogen (N) fertilization is one of the main contributors. Nitrous oxide is a potent greenhouse gas that has a global warming potential which is approximately 298 times that of carbon dioxide (CO2) over a 100-year period and is currently the dominant ozone-depleting substance. Few studies have assessed the effects of organic N amendments on direct N2O within the context of a typical dairy forage cropping system. Most research has been limited to studying the effects of one or two sources of N inputs on N2O emissions; however, dairy forage cropping systems often apply manure and have more than two N sources that likely both contribute to N2O emissions. This study investigated how different dairy cropping practices that include differences in crop residues, N inputs (dairy manure and inorganic fertilizer), timing of N amendment applications and environmental conditions influenced N2O emissions from no-till soil planted to corn (Zea mays L.). A two-year field study was carried out as part of the Pennsylvania State Sustainable Dairy Cropping Systems Experiment, where corn was planted following annual grain crops, perennial forages, and a green manure legume crop; all were amended with dairy manure. In the corn-soybean (Glycine max (L.) Merr.) rotation, N sources (dairy manure and inorganic fertilizer) and two methods of manure application (broadcasted and injected) were also compared.Chapter 1 reviews the scientific literature; describing the biotic and abiotic processes of N2O production in soils, summarizing current research on N2O emissions in agricultural systems, and emphasizing the main management and environmental drivers contributing to the emissions. This chapter reviews methods for matching N supply with crop demand, coupling N flow cycles, using advanced fertilizer techniques, and optimizing tillage management. Also, the applicability and limitations of current research to effectively reduce N2O emissions in a variety of regions are discussed.Chapter 2 analyzes the effect of corn production management practices and environmental conditions contributing to N2O in the Pennsylvania State Sustainable Dairy Cropping Systems Experiment. Significantly higher N2O emissions were observed 15-42 days after manure injection and 1-4 days after mid-season UAN application. Manure injection had 2-3 times greater potential for N2O emissions compared to broadcast manure during this time period. Integration of legumes and grasses in the cropping system reduced inorganic fertilizer use compared to soybean with manure or UAN, however, direct N2O emissions were not reduced. The Random Forest method was used to identify and rank the predictor variables for N2O emissions. The most important variables driving N2O emissions were: time after manure application, time after previous crop termination, soil nitrate, and moisture. These field research results support earlier recommendations for reducing N losses including timing N inputs close to crop uptake, and avoiding N applications when there is a high chance of precipitation to reduce nitrate accumulation in the soil and potential N losses from denitrification.Chapter 3 reports the comparison of N2O fluxes predicted with the biogeochemical model DAYCENT compared to measured data from the two-year dairy cropping systems study. Daily N2O emissions simulated by DAYCENT had between 41% and 76% agreement with measured daily N2O emissions in 2015 and 2016. DAYCENT overestimated the residual inorganic N fertilizer impact on N2O emissions in the corn following soybean with inorganic fertilizer and broadcast manure. Comparisons between DAYCENT simulated and measured N2O fluxes indicate that DAYCENT did not represent well organic N amendments from crop residues of perennials and legume cover crops, or manure application in no-till dairy systems. DAYCENT was generally able to reproduce temporal patterns of soil temperature, but volumetric soil water contents (VSWC) predicted by DAYCENT were generally lower than measured values. After precipitation events, DAYCENT predicted that VSWC tended to rapidly decrease and drain to deeper layers. Both the simulated and measured soil inorganic N increased with N fertilizer addition; however, the model tended to underestimate soil inorganic N concentration in the 0-5 cm layer. Our results suggest that DAYCENT overestimated the residual N impact of inorganic fertilizer on N2O emissions and mineralization of organic residues and nitrification happened faster than DAYCENT predicted. Chapter 4 highlights the impact of manure injection and the importance of timing organic N amendments from manures and/or crop residue with crop N uptake to mitigate N2O emissions. More research is needed to better understand the tradeoffs of these strategies in no till dairy cropping systems to help farmers in their operational management decisions. Improving the parametrization of DAYCENT for dairy cropping systems in no-till systems with high surface legume crop residues from perennials and cover crops, will make the model a more useful tool for testing different mitigation scenarios for farmers and policy-designer decision making.

Evaluating Mitigation Options of Nitrous Oxide Emissions in California Cropping Systems

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Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Evaluating Mitigation Options of Nitrous Oxide Emissions in California Cropping Systems by : Martin Burger

Download or read book Evaluating Mitigation Options of Nitrous Oxide Emissions in California Cropping Systems written by Martin Burger and published by . This book was released on 2016 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advances in Research on Fertilization Management of Vegetable Crops

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Publisher : Springer
ISBN 13 : 3319536265
Total Pages : 307 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Advances in Research on Fertilization Management of Vegetable Crops by : Francesco Tei

Download or read book Advances in Research on Fertilization Management of Vegetable Crops written by Francesco Tei and published by Springer. This book was released on 2017-04-24 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a review of the recent literature on the key scientific and technical subjects of fertilization management in vegetable crops. In the last decades, research on fertilization management in vegetables was aimed at producing economical yields with reduced fertilizer inputs by the development and implementation of cropping systems, nutrient management approaches and crop varieties. Examples of the interventions in cropping systems included adequate crop rotations, inter-cropping, double cropping, and other strategies for a better soil organic matter management; nutrient management approaches included modelling, Decision Support Systems, crop nutritional status testing and precision agriculture technologies; amelioration of crop varieties has been directed toward higher nutrient/fertilizer use efficiency.

Understanding Greenhouse Gas Emissions from Agricultural Management

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Publisher : OUP USA
ISBN 13 : 9780841226548
Total Pages : 0 pages
Book Rating : 4.2/5 (265 download)

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Book Synopsis Understanding Greenhouse Gas Emissions from Agricultural Management by : Lei Guo

Download or read book Understanding Greenhouse Gas Emissions from Agricultural Management written by Lei Guo and published by OUP USA. This book was released on 2012-04-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A valuable source of information for researchers and environmental practitioners, providing the most up-to-date information on greenhouse gas emissions from field crops and livestock animals

No-till Farming Systems for Sustainable Agriculture

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Publisher : Springer Nature
ISBN 13 : 3030464091
Total Pages : 638 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis No-till Farming Systems for Sustainable Agriculture by : Yash P. Dang

Download or read book No-till Farming Systems for Sustainable Agriculture written by Yash P. Dang and published by Springer Nature. This book was released on 2020-09-03 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive summary of current global research on no-till farming, and its benefits and challenges from various agronomic, environmental, social and economic perspectives. It details the characteristics and future requirements of no-till farming systems across different geographic and climatic regions, and outlines what is needed to increase the uptake of no-till farming globally. Over 35 chapters, this book covers in detail the agronomic and soil management issues that must be resolved to ensure the successful implementation of these systems. Important economic, environmental, social and policy considerations are discussed. It also features a series of case studies across a number of regions globally, highlighting the challenges and opportunities for no-till and how these may vary depending on climate and geopolitical location. This book is a remarkable compilation by experts in no-till farming systems. The promotion and expansion of no-till farming systems worldwide will be critical for food security, and resource and environmental sustainability. This is an invaluable reference for both researchers and practitioners grappling with the challenges of feeding the world’s rising population in an environment increasingly impacted by climate change. It is an essential reading for those seeking to understand the complexity of no-till farming systems and how best to optimise these systems in their region.

On-farm Nitrous Oxide Response to Nitrogen Fertilizer in Corn Cropping Systems

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Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.3/5 (129 download)

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Book Synopsis On-farm Nitrous Oxide Response to Nitrogen Fertilizer in Corn Cropping Systems by : John Patrick Hoben

Download or read book On-farm Nitrous Oxide Response to Nitrogen Fertilizer in Corn Cropping Systems written by John Patrick Hoben and published by . This book was released on 2009 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Management of Nitrogen in Irrigated Agriculture

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Publisher :
ISBN 13 :
Total Pages : 462 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Management of Nitrogen in Irrigated Agriculture by : Parker F. Pratt

Download or read book Management of Nitrogen in Irrigated Agriculture written by Parker F. Pratt and published by . This book was released on 1978 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Healthcare Simulation Research

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Publisher : Springer Nature
ISBN 13 : 3030268373
Total Pages : 356 pages
Book Rating : 4.0/5 (32 download)

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Book Synopsis Healthcare Simulation Research by : Debra Nestel

Download or read book Healthcare Simulation Research written by Debra Nestel and published by Springer Nature. This book was released on 2019-11-13 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with a detailed orientation to healthcare simulation research, aiming to provide descriptive and illustrative accounts of healthcare simulation research (HSR). Written by leaders in the field, chapter discussions draw on the experiences of the editors and their international network of research colleagues. This seven-section practical guide begins with an introduction to the field by relaying the key components of HSR. Sections two, three, four, and five then cover various topics relating to research literature, methods for data integration, and qualitative and quantitative approaches. Finally, the book closes with discussions of professional practices in HSR, as well as helpful tips and case studies.Healthcare Simulation Research: A Practical Guide is an indispensable reference for scholars, medical professionals and anyone interested in undertaking HSR.

Nitrogen Fertilizer Management of Temporarily Waterlogged Soils to Improve Corn Production and Reduce Environmental Nitrogen Loss

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Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (984 download)

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Book Synopsis Nitrogen Fertilizer Management of Temporarily Waterlogged Soils to Improve Corn Production and Reduce Environmental Nitrogen Loss by : Brendan A. Zurweller

Download or read book Nitrogen Fertilizer Management of Temporarily Waterlogged Soils to Improve Corn Production and Reduce Environmental Nitrogen Loss written by Brendan A. Zurweller and published by . This book was released on 2014 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intense precipitation events during the corn growing season on poorly-drained soils in the Midwestern United States can result in yield loss due to abiotic plant stress and nitrogen fertilizer loss associated with flooding. Nitrogen loss from soils also has environmental implications if nitrate reaches surfaces waters or gaseous nitrous oxide emissions occur. The objectives of this study were to determine the effects of soil flooding on enhanced efficiency pre-plant and post-flooding nitrogen fertilizer applications on corn production and soil nitrogen availability/loss. Results of this research show that a 50% reduction in soil nitrate can occur after one day of flooding, and large pulses of nitrous oxide emissions can occur in a short time period when soils are flooded. In the 2012 growing season, slight advantages were observed with the use of enhanced efficiency nitrogen fertilizers and a post-flood nitrogen fertilizer application. A significant loss of corn grain yield was observed after three days of flooding in 2013. These results indicate that saturated soil conditions can have both economic and environmental impacts and there is a need for future research to address both drainage and nitrogen management strategies for possible applications to farmers.

Nitrogen Management in Irrigated Agriculture

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Publisher : Oxford University Press, USA
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Nitrogen Management in Irrigated Agriculture by : Roy S. Rauschkolb

Download or read book Nitrogen Management in Irrigated Agriculture written by Roy S. Rauschkolb and published by Oxford University Press, USA. This book was released on 1994 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen constitutes about 79 percent of the earth's atmosphere, yet, in an agricultural plant production system, it is still common for soils to be deficient in the nitrogen needed for maximum plant growth. Nitrogen fertilizers, however, despite being essential for the economically driven production of food and fiber, are recognized as polluters of natural waters, and it has become increasingly apparent that manufactured and naturally occurring nitrogen resources must be better managed. This book addresses the problem by describing how such factors as types of soils and crops, irrigation methods, climate, and the nitrogen cycle itself affect levels of nitrogen in agricultural plant production systems. The book also provides a practical guide to the use of different fertilizers with regard to environment, type of plant, and method of farming. This book will help to achieve effective nitrogen management in agriculture and will be of interest to workers in local, state, and federal agricultural extension services, consulting firms, environmental regulators, and students and researchers in soil chemistry.

Nitrogen Management Strategies to Improve Corn Growth and Reduce Soil Greenhouse Gas Emissions from Claypan Soils

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Publisher :
ISBN 13 :
Total Pages : 155 pages
Book Rating : 4.:/5 (19 download)

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Book Synopsis Nitrogen Management Strategies to Improve Corn Growth and Reduce Soil Greenhouse Gas Emissions from Claypan Soils by : Tyler W. Steusloff

Download or read book Nitrogen Management Strategies to Improve Corn Growth and Reduce Soil Greenhouse Gas Emissions from Claypan Soils written by Tyler W. Steusloff and published by . This book was released on 2018 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adoption of nitrogen (N) management strategies to minimize gaseous N loss from agriculture while maintaining high yield production is increasingly important for an exponentially growing population. Agricultural management on poorly-drained claypan soils in the Midwestern U.S. make corn (Zea mays L.) production even more challenging due to the subsoil's low permeability, which may result in wetter soil conditions and relatively larger amounts of soil N[subscript 2]O emissions during the growing season. The objective of this study was to determine the effects of urea fertilizer placement with and without the addition of a nitrification inhibitor (NI) on corn yield, N use efficiency (NUE), and cumulative soil N[subscript 2]O emissions on a Northeastern Missouri claypan soil. The fertilizer strategies utilized in this study consisted of deep-banded urea (DB) or urea plus nitrapyrin [2-chloro-6-(trichloromethyl) pyridine] (DB+NI) at a depth of 20 cm compared to urea broadcast surface applied (SA) or incorporated to a depth of 8 cm (IA). The addition of a NI with deep-banded urea resulted in 27% greater apparent N recovery efficiency than all other N treatments. Additionally, DB+NI had 54 and 55% lower cumulative soil N[subscript 2]O emissions than IA and SA treatments in the two combined growing seasons. These results suggest that deep placement of urea with or without nitrapyrin is an effective management strategy for increasing corn yield and reducing N loss on a claypan soil.

Managing Nitrogen Soils for Corn Production on Irrigated Sandy Soils

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ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Managing Nitrogen Soils for Corn Production on Irrigated Sandy Soils by : George William Rehm

Download or read book Managing Nitrogen Soils for Corn Production on Irrigated Sandy Soils written by George William Rehm and published by . This book was released on 1989 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: