Nitrate Leaching Dynamics in Agroecosystems PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Nitrate Leaching Dynamics in Agroecosystems PDF full book. Access full book title Nitrate Leaching Dynamics in Agroecosystems by Kevin Charles Masarik. Download full books in PDF and EPUB format.
Author: Kevin Charles Masarik
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Nitrate is an ongoing concern for large sectors of society that rely on municipal and private wells for drinking water. Nitrogen fertilizer and manure additions are standard practices in agroecosystems and are the most significant contributions to Midwestern groundwater nitrate challenges. Nitrate concerns are particularly challenging in the Central Sands region of Wisconsin due to high nutrient requirements of potato/vegetable production and excessively drained soils. To reduce the mounting costs of nitrate remediation, there remains a need to design agricultural systems that lose less nitrate to groundwater while remaining profitable. More extreme weather events and warmer temperatures in Wisconsin have implications for nitrogen management and groundwater quality. As we adapt to our climate reality, communities are increasingly interested in understanding how groundwater quality is changing with respect to nitrate; yet few communities have the necessary systems in place to detect trends at regional scales. This work investigates spatial and temporal nitrate leaching dynamics at both field and regional scales and addresses the following questions: 1) What is the impact of a potato/vegetable rotation on groundwater quality in the irrigated sands of Central Wisconsin? 2) Can interplanting between potato hills lead to reductions in nitrate leaching without negatively impacting yields? 3) Can networks of private wells be used to quantify nitrate trends in a community's groundwater? 4) How can risk communication theory be utilized to better communicate with rural audiences about the importance of testing private wells. In the first experiment, I utilized lysimeters to quantify nitrate leaching over a four-year rotation on a commercial potato/vegetable production farm in Central Wisconsin. Second, I interplanted barley, oats, and millet in the furrows between potato hills to understand whether this practice could reduce nitrate leaching without negatively impacting yield. Third, I worked with two Wisconsin counties to develop spatially extensive networks of private wells for understanding trends. Lastly, I used communication theory to understand how to effectively engage more private well owners in risk reduction behaviors. This work contributes to high-quality long-term data sets that quantify immediate field level impacts and creates a template for communities to track regional well water quality trends.
Author: Kevin Charles Masarik
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Nitrate is an ongoing concern for large sectors of society that rely on municipal and private wells for drinking water. Nitrogen fertilizer and manure additions are standard practices in agroecosystems and are the most significant contributions to Midwestern groundwater nitrate challenges. Nitrate concerns are particularly challenging in the Central Sands region of Wisconsin due to high nutrient requirements of potato/vegetable production and excessively drained soils. To reduce the mounting costs of nitrate remediation, there remains a need to design agricultural systems that lose less nitrate to groundwater while remaining profitable. More extreme weather events and warmer temperatures in Wisconsin have implications for nitrogen management and groundwater quality. As we adapt to our climate reality, communities are increasingly interested in understanding how groundwater quality is changing with respect to nitrate; yet few communities have the necessary systems in place to detect trends at regional scales. This work investigates spatial and temporal nitrate leaching dynamics at both field and regional scales and addresses the following questions: 1) What is the impact of a potato/vegetable rotation on groundwater quality in the irrigated sands of Central Wisconsin? 2) Can interplanting between potato hills lead to reductions in nitrate leaching without negatively impacting yields? 3) Can networks of private wells be used to quantify nitrate trends in a community's groundwater? 4) How can risk communication theory be utilized to better communicate with rural audiences about the importance of testing private wells. In the first experiment, I utilized lysimeters to quantify nitrate leaching over a four-year rotation on a commercial potato/vegetable production farm in Central Wisconsin. Second, I interplanted barley, oats, and millet in the furrows between potato hills to understand whether this practice could reduce nitrate leaching without negatively impacting yield. Third, I worked with two Wisconsin counties to develop spatially extensive networks of private wells for understanding trends. Lastly, I used communication theory to understand how to effectively engage more private well owners in risk reduction behaviors. This work contributes to high-quality long-term data sets that quantify immediate field level impacts and creates a template for communities to track regional well water quality trends.
Author: Thomas William Bruulsema
Publisher: Ann Arbor, Mich. : University Microfilms International
ISBN:
Category :
Languages : en
Pages : 306
Get Book Here
Book Description
![Simulating Nitrogen Dymanics [i.e. Dynamics] and Nitrate Leaching Using LEACHM Model PDF](https://books.google.com/books/content/images/frontcover/VWcxtAEACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category : Soils
Languages : en
Pages :
Get Book Here
Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 030930783X
Category : Medical
Languages : en
Pages : 340
Get Book Here
Book Description
How we produce and consume food has a bigger impact on Americans' well-being than any other human activity. The food industry is the largest sector of our economy; food touches everything from our health to the environment, climate change, economic inequality, and the federal budget. From the earliest developments of agriculture, a major goal has been to attain sufficient foods that provide the energy and the nutrients needed for a healthy, active life. Over time, food production, processing, marketing, and consumption have evolved and become highly complex. The challenges of improving the food system in the 21st century will require systemic approaches that take full account of social, economic, ecological, and evolutionary factors. Policy or business interventions involving a segment of the food system often have consequences beyond the original issue the intervention was meant to address. A Framework for Assessing Effects of the Food System develops an analytical framework for assessing effects associated with the ways in which food is grown, processed, distributed, marketed, retailed, and consumed in the United States. The framework will allow users to recognize effects across the full food system, consider all domains and dimensions of effects, account for systems dynamics and complexities, and choose appropriate methods for analysis. This report provides example applications of the framework based on complex questions that are currently under debate: consumption of a healthy and safe diet, food security, animal welfare, and preserving the environment and its resources. A Framework for Assessing Effects of the Food System describes the U.S. food system and provides a brief history of its evolution into the current system. This report identifies some of the real and potential implications of the current system in terms of its health, environmental, and socioeconomic effects along with a sense for the complexities of the system, potential metrics, and some of the data needs that are required to assess the effects. The overview of the food system and the framework described in this report will be an essential resource for decision makers, researchers, and others to examine the possible impacts of alternative policies or agricultural or food processing practices.
Author: K R Krishna
Publisher: CRC Press
ISBN: 1482280051
Category : Technology & Engineering
Languages : en
Pages : 354
Get Book Here
Book Description
The book deals with agroecological aspects of nutrients essential to crop production. A new concept termed 'AGROSPHERE' has been introduced in the book. A brief description about agrosphere, its expanse, contrasting features and interactions with other ecospheres, global nutrient dynamics and food production trends within various agro ecosystems fo
Author: K. R. Krishna
Publisher: CRC Press
ISBN: 1926895487
Category : Science
Languages : en
Pages : 554
Get Book Here
Book Description
Comprised of three sections, this covers the nutrient dynamics and productivity of global agroecosystems. It focuses on the major aspects that make up agroecosystems, such as soils, climate, crops, nutrient dynamics, and productivity. It introduces agroeocsystems and describes global soil types that support vast crop belts, then deals with the principles that drive crop growth, nutrient dynamics and ecosystematic functions within any agroecosystem. It also details the influence of agronomic practices and factors such as soil microbes, organic matter, crop genetic nature, irrigation, weeds, and cropping systems that affect productivity of agroecosystems.
Author: Vaughn J. Thacker
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages :
Get Book Here
Book Description
Contamination of freshwater systems by nutrients has been studied extensively in the eastern U.S. Little research on the fate of nutrients in grazing conditions has been done in the western U.S. Western agriculture is often irrigated and research addressing the potential for leaching under these conditions is warranted. This study used Management Intensive Grazing (MIG) and eight grass-legume mixtures to evaluate the management and forage choice in relation to nitrogen and phosphorus leaching to ground water. Soil water samples were taken weekly through the growing season from 2001 through 2003. Water samples were analyzed for nitrate, ammonia, and phosphate. Soils were described and a textural discontinuity was discovered in two of the six soil profiles described. Data were analyzed by treatment, grass, legume, and soils by treatment. Three-year nitrate-N means were found to be in a range of 4.50 to 48.10 and 2.11 to 49.5 mg NO3 - -N L-1, at 60 cm and 90 cm, respectively. The amount of leaching depended on the grass-legume mixture as well as the soil characteristics. Significant differences were found between grasses (P=0.0001) with tall fescue leaching the least and orchardgrass leaching the most. Differences in leaching under legumes were also found to be significant (P=0.001), with white clover always leaching more than birdsfoot trefoil when significant differences were observed. Ammonia leaching was nonsignificant at a studywide analysis. Phosphorus treatment concentrations ranged from 0.025 to 0.41 mg PO4 - -P L-1 and were significantly different (P=0.001). A comparison by grass type indicated that perennial ryegrass leached significantly higher concentrations of P (P=0.01) at 60 cm than the other grasses, but found no difference at 90 cm. No significant differences were found between legumes at either depth. Leaching of P was less affected by the soil textural discontinuity than nitrogen leaching. Soil differences affect leaching in varying degrees. Nitrate was affected most strongly by soil differences. These differences were more strongly evident at 60 cm than 90 cm. Soils affected phosphorus leaching differently than nitrate, and were more strongly affected at 90 cm than at 60 cm. Ammonia was not affected by soil characteristics.
Author: Khalid Rehman Hakeem
Publisher: Springer
ISBN: 331934451X
Category : Technology & Engineering
Languages : en
Pages : 439
Get Book Here
Book Description
Soil is the most important natural non-renewable resource developed over a longer period of time due to weathering of rocks and subsequently enrichment of organic matter. Soil provides habitat for numerous microorganisms and serves as a natural medium for plant growth, thereby providing the plants with anchorage, nutrients and water to sustain the growth. Soil also serves as a universal sink for all types of pollutants, purifies ground water and is a major reserve of carbon in the universe. The role of soils to provide ecosystem services, maintenance of environmental/human health and ensuring the food security makes it as the most important and basic natural resource. Soil Science helps us to elaborate and understand how the soils provide all these services. Soil Science also provides us the basic knowledge dealing with the origin of the soil parent material, weathering of parent material and the formation of soils, morphological, physico-chemical and biological features of soils, classification of soils and role of soils in the provision and maintenance of ecosystem services, food security and environmental quality. This book encompasses the various processes, functions and behaviour of soils very comprehensively to acquaint the students of soil, plant and environmental sciences about their role to perform different agricultural and environmental functions.
Author: Barbara Schmied
Publisher:
ISBN:
Category :
Languages : en
Pages : 183
Get Book Here
Book Description
Author: Terri MacPherson
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
