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Comparison Of Alternative Manure Management Systems
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Book Synopsis Comparison of Alternative Manure Management Systems by : Rodney O. Martin
Download or read book Comparison of Alternative Manure Management Systems written by Rodney O. Martin and published by . This book was released on 1983 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A comparison of alternative manure management systems by : Rodney O. Martin
Download or read book A comparison of alternative manure management systems written by Rodney O. Martin and published by . This book was released on 1984 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alternatives for Dairy Manure Management by : C. Edwin Young
Download or read book Alternatives for Dairy Manure Management written by C. Edwin Young and published by . This book was released on 1986 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ORD Publications Announcement by : Center for Environmental Research Information (U.S.).
Download or read book ORD Publications Announcement written by Center for Environmental Research Information (U.S.). and published by . This book was released on 1986 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen Cycling and Trade-offs with Alternative Manure Application by : Emily Duncan
Download or read book Nitrogen Cycling and Trade-offs with Alternative Manure Application written by Emily Duncan and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen management in agriculture remains an important challenge for todays generation of scientists and producers. Many watersheds and regions struggle with excess nutrient management and the Chesapeake Bay watershed is not an exception. Few studies are able to encompass both environmental losses and agronomic measurements. The field lysimeter research location offers an opportunity to improve our understanding of management strategies. Every pathway of potential loss can be monitored on a replicated basis. The four chapters in this dissertation describe the unique site location, and the research projects that have added to our knowledge of dairy manure management. The first study (chapter 2) presents a hydrologic analysis of the research site12 field scale lysimeters. Field lysimeters built at this scale are rare, and provide a unique opportunity to study environmental losses at a field scale as opposed to smaller column or pan lysimetry. However, the site is not uniform, and not all field lysimeters behave similarly. Based on hydrologic properties (volume and type of runoff), depth to bedrock, and hydrograph analysis, treatment-blocking maps were constructed to aid in future studies, and inform previously collected data.The second study (chapter 3) focused on comparing gas emissions (NH3 and N2O) associated with broadcast and shallow disk injection. Shallow disk injection significantly decreases ammonia volatilization compared to broadcast (surface) application of manure. However, the injection band from disk injection can increase N2O emissions, which is a potent GHG. Shallow disk injection of manure did double cumulative N2O emissions as compared to broadcast application. However, NH3 volatilization was 90% lower with injected manure, leading to greater N conservation. The third study (chapter 4) combined all of the data collected from the field lysimeters: gas emissions, overland flow and subsurface flow N loads, crop uptake, and soil storage into nitrogen budgets. To analyze the data, it was organized into two different manure budgets. The first budget covered January 2012 to September 2012, and the second budget spanned October 2012 to September 2013. Injection manure N balances were more difficult to close, and included a large proportion of unaccounted N (50% and 68% of applied N for two accounting periods). Even so, results point to cumulative differences in nutrient use efficiencies that can be attributed to the greater conservation of ammonia-N with manure injection. There was an apparent build-up of soil N with manure injection that was not observed with broadcast application (in PSNT measurements). However, these trends were preliminary; over the two growing seasons covered by this study, these differences did not result in significant differences in corn yield or crop N removal.The final study (chapter 5) used the Integrated Farm System Model to simulate different manure management scenarios on a typical Pennsylvania dairy farm (100 milking cows, 80 ha). Data from field experiments measuring ammonia volatilization, crop uptake and nitrate leaching was used to verify the model. The model could then be used to evaluate different manure management strategies for crop production, environmental losses, and economics. Converting the operation from daily haul to 6 months of storage with broadcast application did not substantially change N losses to the environment. However, replacing broadcast manure application with shallow disk injection resulted in substantial conservation of ammonium-N in manure and greater manure N use efficiency by crops, but slightly exacerbated nitrate-N leaching losses. Increasing manure storage from 6 to 12 months and injecting manure reduced nitrate-N leaching reduced by 38% due to better timing of manure application to crop growth. However, when manure storage was expanded to 12 months, net returns were $422 less with subsurface injection compared to broadcast manure, whereas, with a 6-month storage, the difference in net return was $469 per year.The results of this research highlight the need for more long-term investigations of manure management at a field-scale. Long-term studies are important for establishing treatment differences. At field-scale some of these differences (ie. yield, crop uptake, runoff loads) might be more difficult to discern due to the highly variable nature of field research. Long-term study sites offer opportunities to further investigate BMPs like shallow disk injection. Overall, these studies find that shallow disk injection can be a positive alternative to broadcast applied manure, but that significant treatment differences are still hard to determine.
Book Synopsis Indexes by : United States. Environmental Protection Agency
Download or read book Indexes written by United States. Environmental Protection Agency and published by . This book was released on 1983 with total page 1760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quick Bibliography Series written by and published by . This book was released on 1976 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manure written by Jayne T. MacLean and published by . This book was released on 1990 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1984 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Summaries written by and published by . This book was released on 1994 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alternative Farming Systems-economic Aspects, 1970-1986 by : Karl Schneider
Download or read book Alternative Farming Systems-economic Aspects, 1970-1986 written by Karl Schneider and published by . This book was released on 1986 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Swine Waste Management Alternatives by : Stewart W. Melvin
Download or read book Swine Waste Management Alternatives written by Stewart W. Melvin and published by . This book was released on 1981 with total page 8 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 1990-04 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report summaries by : United States. Environmental Protection Agency
Download or read book Report summaries written by United States. Environmental Protection Agency and published by . This book was released on 1983 with total page 1584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hog Manure Management, the Environment and Human Health by : Tiffany T.Y. Guan
Download or read book Hog Manure Management, the Environment and Human Health written by Tiffany T.Y. Guan and published by Springer Science & Business Media. This book was released on 2003-10-31 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a current look at how development of intensive live stock production, particularly hogs, has affected human health with respect to zoonotic diseases primarily transmitted by food but also by water, air and oc cupational activity. While information presented focuses on the development of increasing livestock production in Canada, examples are given and compar isons are made with other countries (Denmark, Taiwan, the Netherlands and the United States) where the levels of livestock production are much more intense and where the industry is more mature. Canada is also searching for solutions to enable handling the growing volume of its livestock waste properly. Lessons learned from the experience of those who have gone before are invaluable and are drawn together in this volume to serve as useful guidance for others in plot ting the courses of action possible to avoid serious environmental setbacks and negative human health effects through foodborne illness. A significant portion of the text is devoted to a discussion of enteric illness in humans caused by zoonotic pathogens. The second chapter deals with sur vival of pathogens (which cause foodborne illness) in manure environments. An evaluation of the human health hazard likely to occur from the use of ma nure as fertilizer is important because of the recent trend toward an increase in foodborne illness from the consumption of minimally processed fruits and vegetables that may have been fertilized with animal-derived organic materials.
Book Synopsis Food Systems Evaluation Methods and Sustainability Assessment by : Bradley George Ridoutt
Download or read book Food Systems Evaluation Methods and Sustainability Assessment written by Bradley George Ridoutt and published by Frontiers Media SA. This book was released on 2024-03-08 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: The food system is responsible for some of society’s most pressing sustainability challenges. Diets are currently unsustainable in many countries as evidenced by the growing burden of malnutrition, degradation of natural resources, contributions to climate change, and unaffordability of healthy diets. There is an urgent need to address the gaps in understanding of what a sustainable food system means across varying populations and geographies and how we can better measure these systems, while identifying how dietary choices impact on human health and the environment. However, decision makers and experts are questioning whether it is possible to meet environmental, social, and economic goals simultaneously, or whether trade-offs are necessary. Thus, the development of better measurements and indicators to clearly understand the benefits and considerations for healthy and sustainable food systems is needed.
Book Synopsis Animal Science Reviews 2011 by : David Hemming
Download or read book Animal Science Reviews 2011 written by David Hemming and published by CABI. This book was released on 2012-01-01 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: & Quot;Animal Science Reviews 2011" provides scientists and students in animal science with timely analysis on key topics in current research. Originally published online in CAB Reviews, this volume makes available in printed form the reviews in animal science published during 2011.