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432 results on '"Kleinman, Peter J. A."'

3. Comparative analysis of water budgets across the U.S. long-term agroecosystem research network

Author

Baffaut, Claire, Baker, John M., Biederman, Joel A., Bosch, David D., Brooks, Erin S., Buda, Anthony R., Demaria, Eleonora M., Elias, Emile H., Flerchinger, Gerald N., Goodrich, David C., Hamilton, Stephen K., Hardegree, Suart P., Harmel, R.Daren, Hoover, David L., King, Kevin W., Kleinman, Peter J., Liebig, Mark A., McCarty, Gregory W., Moglen, Glenn E., Moorman, Thomas B., Moriasi, Daniel N., Okalebo, Jane, Pierson, Fred B., Russell, Eric S., Saliendra, Nicanor Z., Saha, Amartya K., Smith, Douglas R., and Yasarer, Lindsey M.W.

Published
2020
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4. A review of the development and implementation of the critical source area concept : A reflection of Andrew Sharpley's role in improving water quality

Author

McDowell, Richard, Kleinman, Peter J. A., Haygarth, Philip, McGrath, Joshua M., Smith, Douglas, Heathwaite, Louise, Iho, Antti, Schoumans, Oscar, Nash, David, McDowell, Richard, Kleinman, Peter J. A., Haygarth, Philip, McGrath, Joshua M., Smith, Douglas, Heathwaite, Louise, Iho, Antti, Schoumans, Oscar, and Nash, David

Abstract

Critical source areas (CSAs) are small areas of a field, farm, or catchment that account for most contaminant loss by having both a high contaminant availability and transport potential. Most work on CSAs has focused on phosphorus (P), largely through the work in the 1990s initiated by Dr. Sharpley and colleagues who recognized the value in targeting mitigation efforts. The CSA concept has been readily grasped by scientists, farmers, and policymakers across the globe. However, experiences and success have been mixed, often caused by the variation in where and how CSAs are defined. For instance, analysis of studies from 1990 to 2023 shows that the proportion of the annual contaminant load coming from a CSA decreases from field to farm to catchment scale. This finding is consistent with increased buffering of CSAs and greater contribution of other sources with scale, or variation in the definition of CSAs. We therefore argue that the best application of CSAs to target mitigation actions should be at small areas that truly account for most contaminant loss. This article sheds light on the development and utilization of CSAs, paying tribute to Dr. Sharpley's remarkable contributions to the improvement of water quality, and reflecting upon where the CSA concept has succeeded or not in reducing contaminant (largely P) loss.

Published
2024

17. Culturable antibiotic-resistant fecal coliform bacteria in soil and surface runoff after liquid dairy manure surface application and subsurface injection

Author

Hilaire, Sheldon Shervon, Chen, Chaoqi, Radolinski, Jesse, Leventhal, Talia, Preisendanz, Heather, Kleinman, Peter J. A., Maguire, Rory, Stewart, Ryan D., Saporito, Lou S., Xia, Kang, Hilaire, Sheldon Shervon, Chen, Chaoqi, Radolinski, Jesse, Leventhal, Talia, Preisendanz, Heather, Kleinman, Peter J. A., Maguire, Rory, Stewart, Ryan D., Saporito, Lou S., and Xia, Kang

Abstract

Land application of manure, while beneficial to soil health and plant growth, can lead to an overabundance of nutrients and introduction of emerging contaminants into agricultural fields. Compared with surface application of manure, subsurface injection has been shown to reduce nutrients and antibiotics in surface runoff. However, less is known about the influence of subsurface injection on the transport and persistence of antibiotic-resistant microorganisms. We simulated rainfall to field plots at two sites (one in Virginia and one in Pennsylvania) 1 or 7 d after liquid dairy manure surface and subsurface application (56 Mg ha–1) and monitored the abundance of culturable antibiotic-resistant fecal coliform bacteria (ARFCB) in surface runoff and soils for 45 d. We performed these tests at both sites in spring 2018 and repeated the test at the Virginia site in fall 2019. Manure subsurface injection, compared with surface application, resulted in less ARFCB in surface runoff, and this reduction was greater at Day 1 after application compared with Day 7. The reductions of ARFCB in surface runoff because of manure subsurface injection were 2.5–593 times at the Virginia site in spring 2018 and fall 2019 and 4–5 times at the Pennsylvania site in spring 2018. The ARFCB were only detectable in the 0-to-5-cm soil depth within 14 d of manure surface application but remained detectable in the injection slits of manure subsurface-injected plots even at Day 45. This study demonstrated that subsurface injection can significantly reduce surface runoff of ARFCB from manure-applied fields.

Published
2022
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18. Challenges and opportunities for manureshed management across U.S. dairy systems: Case studies from four regions

Author

Dell, Curtis J., primary, Baker, John M., additional, Spiegal, Sheri, additional, Porter, Sarah A., additional, Leytem, April B., additional, Flynn, K. Colton, additional, Rotz, C. Alan, additional, Bjorneberg, David L., additional, Bryant, Ray B., additional, Hagevoort, G. Robert, additional, Williamson, Jeb C., additional, Slaughter, Amalia, additional, and Kleinman, Peter J. A., additional

Published
2022
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21. NUTRIENT FATE IN THE FULL MANURE PHOSPHORUS EXTRACTION (MAPHEX) SYSTEM, AND DESIGN OF A SIMPLIFIED SYSTEM (MAPHEX LITE).

Author

Church, Clinton, Hristov, Alexander N., Kleinman, Peter J. A., Fishel, Sarah K., Reiner, Michael R., and Bryant, Ray B.

Abstract

The relatively recent concept of the manureshed highlights the problem of the broken nutrient cycle in modern animal agriculture and the low nitrogen:phosphorus ratio in manure relative to crop requirement that results in P accumulation in soils near source areas. One solution to avoid P accumulation is to transport the manure to soils with a deficit of P, but liquid manure’s bulkiness and low nutrient density present challenges for transport over great distances. While the full MAnure PHosphorus EXtraction (MAPHEX) System has shown to be capable of removing greater than 90% of the P from liquid manures while leaving much of the N in the liquid fraction for use on the farm, other nutrients present in manures in lesser amounts than N and P have not been reported on. This study indicates that both the full MAPHEX System and a newly designed MAPHEX Lite System, that not only conserves more N but is more efficient and less costly, are highly efficient at extracting and concentrating most nutrients in solid form while leaving most of the N and K in the liquid phase for beneficial use by the farmer near the manure source. Therefore, it seems clear that both Systems, and the components they include have the potential to play a significant role in manureshed management. [ABSTRACT FROM AUTHOR]

Published
2023
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22. Culturable antibiotic‐resistant fecal coliform bacteria in soil and surface runoff after liquid dairy manure surface application and subsurface injection

Author

Hilaire, Sheldon Shervon, primary, Chen, Chaoqi, additional, Radolinski, Jesse, additional, Leventhal, Talia, additional, Preisendanz, Heather, additional, Kleinman, Peter J. A., additional, Maguire, Rory, additional, Stewart, Ryan D., additional, Saporito, Lou S., additional, and Xia, Kang, additional

Published
2022
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23. Addressing conservation practice limitations and trade‐offs for reducing phosphorus loss from agricultural fields

Author

Kleinman, Peter J. A., primary, Osmond, Deanna L., additional, Christianson, Laura E., additional, Flaten, Don N., additional, Ippolito, James A., additional, Jarvie, Helen P., additional, Kaye, Jason P., additional, King, Kevin W., additional, Leytem, April B., additional, McGrath, Joshua M., additional, Nelson, Nathan O., additional, Shober, Amy L., additional, Smith, Douglas R., additional, Staver, Kenneth W., additional, and Sharpley, Andrew N., additional

Published
2022
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26. Minimum dataset and metadata guidelines for soil‐test correlation and calibration research

Author

Slaton, Nathan A., primary, Lyons, Sarah E., additional, Osmond, Deanna L., additional, Brouder, Sylvie M., additional, Culman, Steve W., additional, Drescher, Gerson, additional, Gatiboni, Luciano C., additional, Hoben, John, additional, Kleinman, Peter J. A., additional, McGrath, Joshua M., additional, Miller, Robert O., additional, Pearce, Austin, additional, Shober, Amy L., additional, Spargo, John T., additional, and Volenec, Jeff J., additional

Published
2021
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39. Future phosphorus: advancing new '2D' allotropes and growing a sustainable bio economy

Author

Jarvie, Helen P., Flaten, Don, Sharpley, Andrew N., Kleinman, Peter J. A., Healy, Mark G., and King, Stephen M.

Subjects
Sustainability, New 2D Phosphorus Allotropes, Phosphorus, Bioeconomy
Abstract

With more than 40 countries currently proposing to boost their national bioeconomies, there is no better time for a clarion call for a new bioeconomy, which, at its core, tackles the current disparities and inequalities in phosphorus (P) availability. Existing biofuel production systems have widened P inequalities and contributed to a linear P economy, impairing water quality and accelerating dependence on P fertilizers manufactured from finite non-renewable phosphate rock reserves. Here, we explore how the emerging bioeconomy in novel, value-added, bio-based products offers opportunities to rethink our stewardship of P. Development of integrated value chains of new bio-based products offer opportunities for co-development of P-refineries to recover P fertilizer products from organic wastes. Advances in material sciences are exploiting unique semiconductor and opto-electrical properties of new P allotropes (2D Black Phosphorus and Blue Phosphorus). These novel P materials offer the tantalising prospect of step-change innovations in renewable energy production and storage, in biomedical applications, and in biomimetic processes, including artificial photosynthesis. They also potentially offer an antidote to the P paradox that our agricultural production systems have engineered us into, and expand the future role of P in securing sustainability across both agroecological and technological domains of the bioeconomy. However, there remains a myriad of social, technological and commercialization hurdles to be crossed before such an advanced circular P bioeconomy could be realized. The emerging bioeconomy is just one piece of a much larger puzzle of how to achieve more sustainable and circular horizons in our future use of phosphorus. HPJ was supported by the NERC National Capability projects NEC06851 and NEC07000. peer-reviewed

Published
2019

40. Minimum dataset and metadata guidelines for soil‐test correlation and calibration research.

Author

Slaton, Nathan A., Lyons, Sarah E., Osmond, Deanna L., Brouder, Sylvie M., Culman, Steve W., Drescher, Gerson, Gatiboni, Luciano C., Hoben, John, Kleinman, Peter J. A., McGrath, Joshua M., Miller, Robert O., Pearce, Austin, Shober, Amy L., Spargo, John T., and Volenec, Jeff J.

Abstract

Soil‐test correlation and calibration data are essential to modern agriculture, and their continued relevance is underscored by the expansion of precision farming and the persistence of sustainable soil management priorities. In support of transparent, science‐based fertilizer recommendations, we seek to establish a core set of required and recommended information for soil‐test P and K correlation and calibration studies, a minimum dataset, building on previous research. The Fertilizer Recommendation Support Tool (FRST) project team and collaborators are developing a national database that will support a soil‐test‐based nutrient management decision aid tool. The FRST team includes over 80 scientists from 37 land‐grant universities, two state universities, one private university, three federal agencies, two private not‐for‐profit organizations, and one state department of agriculture. The minimum dataset committee developed and vetted a robust set of factors fo minimum dataset consideration that includes information on soil sample collection and processing, soil chemical and physical properties, experimental design and statistical analyses, and metadata about the trial, production system, and field management. The minimum dataset provides guidelines for essential information to meet the primary objective of knowledge synthesis, including meta‐analysis and systemic reviews, but permits researchers the flexibility to satisfy local, state, and regional objectives. Ultimately, this consensus‐driven effort seeks to establish a standard that ensures the maximum utility and impact of modern correlation and calibration studies for developing crop nutrition recommendations that improve productivity and profitability for the crop producer, while reducing environmental impacts of nutrient losses. Core Ideas: Data sharing is needed for transparent soil‐test‐based recommendations.A soil‐test correlation and calibration minimum dataset provides a data quality standard.A minimum dataset will facilitate meta‐analysis for nutrient recommendations. [ABSTRACT FROM AUTHOR]

Published
2022
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43. A Global Perspective on Phosphorus Management Decision Support in Agriculture: Lessons Learned and Future Directions

Author

Drohan, Patrick J., primary, Bechmann, Marianne, additional, Buda, Anthony, additional, Djodjic, Faruk, additional, Doody, Donnacha, additional, Duncan, Jonathon M., additional, Iho, Antti, additional, Jordan, Phil, additional, Kleinman, Peter J., additional, McDowell, Richard, additional, Mellander, Per‐Erik, additional, Thomas, Ian A., additional, and Withers, Paul J. A., additional

Published
2019
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44. Phosphorus and the Chesapeake Bay: Lingering Issues and Emerging Concerns for Agriculture

Author

Kleinman, Peter J. A., primary, Fanelli, Rosemary M., additional, Hirsch, Robert M., additional, Buda, Anthony R., additional, Easton, Zachary M., additional, Wainger, Lisa A., additional, Brosch, Chris, additional, Lowenfish, Martin, additional, Collick, Amy S., additional, Shirmohammadi, Adel, additional, Boomer, Kathy, additional, Hubbart, Jason A., additional, Bryant, Ray B., additional, and Shenk, Gary W., additional

Published
2019
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47. Phosphorus and the Chesapeake Bay: Lingering Issues and Emerging Concerns for Agriculture

Author

Kleinman, Peter J. A., Fanelli, Rosemary M., Hirsch, Robert M., Buda, Anthony R., Easton, Zachary M., Wainger, Lisa A., Brosch, Chris, Lowenfish, Martin, Collick, Amy S., Shirmohammadi, Adel, Boomer, Kathy, Hubbart, Jason A., Bryant, Ray B., Shenk, Gary W., Kleinman, Peter J. A., Fanelli, Rosemary M., Hirsch, Robert M., Buda, Anthony R., Easton, Zachary M., Wainger, Lisa A., Brosch, Chris, Lowenfish, Martin, Collick, Amy S., Shirmohammadi, Adel, Boomer, Kathy, Hubbart, Jason A., Bryant, Ray B., and Shenk, Gary W.

Abstract

Hennig Brandt's discovery of phosphorus (P) occurred during the early European colonization of the Chesapeake Bay region. Today, P, an essential nutrient on land and water alike, is one of the principal threats to the health of the bay. Despite widespread implementation of best management practices across the Chesapeake Bay watershed following the implementation in 2010 of a total maximum daily load (TMDL) to improve the health of the bay, P load reductions across the bay's 166,000-km(2) watershed have been uneven, and dissolved P loads have increased in a number of the bay's tributaries. As the midpoint of the 15-yr TMDL process has now passed, some of the more stubborn sources of P must now be tackled. For nonpoint agricultural sources, strategies that not only address particulate P but also mitigate dissolved P losses are essential. Lingering concerns include legacy P stored in soils and reservoir sediments, mitigation of P in artificial drainage and stormwater from hotspots and converted farmland, manure management and animal heavy use areas, and critical source areas of P in agricultural landscapes. While opportunities exist to curtail transport of all forms of P, greater attention is required toward adapting P management to new hydrologic regimes and transport pathways imposed by climate change.

Published
2019
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48. Phosphorus and the Chesapeake Bay: Lingering Issues and Emerging Concerns for Agriculture

Author

Biological Systems Engineering, Kleinman, Peter J. A., Fanelli, Rosemary M., Hirsch, Robert M., Buda, Anthony R., Easton, Zachary M., Wainger, Lisa A., Brosch, Chris, Lowenfish, Martin, Collick, Amy S., Shirmohammadi, Adel, Boomer, Kathy, Hubbart, Jason A., Bryant, Ray B., Shenk, Gary W., Biological Systems Engineering, Kleinman, Peter J. A., Fanelli, Rosemary M., Hirsch, Robert M., Buda, Anthony R., Easton, Zachary M., Wainger, Lisa A., Brosch, Chris, Lowenfish, Martin, Collick, Amy S., Shirmohammadi, Adel, Boomer, Kathy, Hubbart, Jason A., Bryant, Ray B., and Shenk, Gary W.

Abstract

Hennig Brandt's discovery of phosphorus (P) occurred during the early European colonization of the Chesapeake Bay region. Today, P, an essential nutrient on land and water alike, is one of the principal threats to the health of the bay. Despite widespread implementation of best management practices across the Chesapeake Bay watershed following the implementation in 2010 of a total maximum daily load (TMDL) to improve the health of the bay, P load reductions across the bay's 166,000-km(2) watershed have been uneven, and dissolved P loads have increased in a number of the bay's tributaries. As the midpoint of the 15-yr TMDL process has now passed, some of the more stubborn sources of P must now be tackled. For nonpoint agricultural sources, strategies that not only address particulate P but also mitigate dissolved P losses are essential. Lingering concerns include legacy P stored in soils and reservoir sediments, mitigation of P in artificial drainage and stormwater from hotspots and converted farmland, manure management and animal heavy use areas, and critical source areas of P in agricultural landscapes. While opportunities exist to curtail transport of all forms of P, greater attention is required toward adapting P management to new hydrologic regimes and transport pathways imposed by climate change.

Published
2019

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