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J

John L. Kovar

oak ridge associated universities

27H指数
128论文数
2.2K被引数
收录论文 22
发表时间
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Quantifying the impact of 4 R nutrient stewardship and cover cropping on soil health across the US Corn Belt量化4R养分管理和覆盖作物对美国玉米带土壤健康的影响
errSOIL & TILLAGE RESEARCH
IF6.8
err2026-07-01
err0
PREAI
errCrespo, Cecilia; Biru, Moges Kidane; Nunes, Marcio R.; Kovar, John L.; Abendroth, Lori J.; Agomoh, Ikechukwu V.; Brouder, Sylvie M.; Carney, Derek; Christianson, Laura E.; Drury, Craig F.; Eagle, Alison J.; Emmett, Bryan; Fernandez, Fabian G.; Gentry, Lowell E.; Helmers, Matthew J.; Malone, Robert W.; Nelson, Kelly A.; O'Brien, Peter L.; Fontes, Giovani P.; Rogovska, Natalia; Ruis, Sabrina J.; Volenec, Jeffrey
err分享
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Modeling nitrogen fluxes in a tile-drained cropping system in the Midwest using an enhanced SWAT model使用改进的SWAT模型对中西部地区明沟排水耕作系统中的氮素通量进行模拟
errAgricultural Water Management
IF6.5
err2026-02-17
err0
errOAAI
errMuhammad Rizwan Shahid; Junyu Qi; Bryan D. Emmett; Robert W. Malone; Natalia Rogovska; Peter L. O’Brien; John L. Kovar; Anna Radke; Gary W. Feyereisen; Kevin W. King; Mark Williams; Daniel Moriasi; Michael J. Castellano
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Organic production reduces subsurface nitrate leaching and maintains crop yields in a US Mollisol有机生产减少了美国 mollisol 土壤中硝酸盐的亚表层淋溶，并维持了作物产量。
errJOURNAL OF ENVIRONMENTAL QUALITY
IF2.3
err2025-09-01
err0
PREAI
errRogovska, Natalia; Ruis, Sabrina J.; Carney, Derek B.; Delate, Kathleen; Wacha, Ken M.; Kovar, John L.; O'Brien, Peter L.; Cambardella, Cynthia A.
err分享
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Variation in patterns of production and water-use efficiency among agroecosystems不同农业生态系统生产模式与水利用效率的变异
errScience of The Total Environment
IF8
err2025-07-25
err0
errOAAI
errOlivia L. Hajek; Nicole E. Kaplan; Shefali Azad; Philip A. Fay; Makki Khorchani; Amanda M. Nelson; Adam P. Schreiner-McGraw; Lori J. Abendroth; Claire Baffaut; John Baker; Brandon T. Bestelmeyer; Elizabeth H. Boughton; Dawn M. Browning; Bryan R. Carlson; Michel A. Cavigelli; Patrick E. Clark; Curtis Dell; Yuxi Guo; John Hendrickson; David Huggins; Mir Zaman Hussain; Kevin W. King; John L. Kovar; Mark Liebig; Martin Locke; Marty Schmer; Maria L. Silveira; Douglas R. Smith; Keirith A. Snyder; Patrick J. Starks; Kathryn E. White; Brook Wilke; David L. Hoover
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Long-term DSSAT simulation of nitrogen loss to artificial subsurface drainage flow for a corn-soybean rotation with winter rye in Iowa爱荷华州玉米-大豆轮作体系中添加冬季黑麦后，长期DSSAT模拟对人工亚表层排水流中氮素损失的预测
errAGRICULTURAL WATER MANAGEMENT
IF6.5
err2025-05-01
err0
errOAAI
errChatterjee, A; Thorp, KR; O'Brien, PL; Kovar, J; Rogovska, N; Malone, RW
err分享
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Thermal time and precipitation dictate cereal rye shoot biomass production
errFIELD CROPS RESEARCH
IF6.4
err2024-07-01
err0
errOAAI
errCrespo, Cecilia; O'Brien, Peter L.; Ruis, Sabrina J.; Kovar, John L.; Kaspar, Thomas C.
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Long-term conservation practices reduce nitrate leaching while maintaining yields in tile-drained Midwestern soils
errAGRICULTURAL WATER MANAGEMENT
IF6.5
err2023-10-01
err7
errOAAI
errRogovska, Natalia; O'Brien, Peter L.; Malone, Rob; Emmett, Bryan; Kovar, John L.; Jaynes, Dan; Kaspar, Thomas; Moorman, Thomas B.; Kyveryga, Peter
err分享
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Sugarcane green harvest management influencing soil phosphorus fractions
errSOIL & TILLAGE RESEARCH
IF6.8
err2023-07-01
err3
errOAAI
errCorreia, Benedito Luiz; Kovar, John L.; Thompson, Michael L.; Pavinato, Paulo S.; Alleoni, Luis Reynaldo Ferracciu
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Harvested winter rye energy cover crop: multiple benefits for North Central US
errENVIRONMENTAL RESEARCH LETTERS
IF5.6
err2023-06-16
err4
errOAAI
errMalone, Robert W.; Radke, Anna; Herbstritt, Steph; Wu, Huaiqing; Qi, Zhiming; Emmett, Bryan D.; Helmers, Matthew J.; Schulte, Lisa A.; Feyereisen, Gary W.; O'Brien, Peter L.; Kovar, John L.; Rogovska, Natalia; Kladivko, Eileen J.; Thorp, Kelly R.; Kaspar, Tom C.; Jaynes, Dan B.; Karlen, Douglas L.; Richard, Tom L.
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Nitrate losses in subsurface drainage and nitrous oxide emissions from a winter camelina relay cropping system reveal challenges to sustainable intensification
errAGRICULTURE ECOSYSTEMS & ENVIRONMENT
IF6.4
err2022-11-01
err9
errOAAI
errEmmett, Bryan D.; O'Brien, Peter L.; Malone, Robert W.; Rogovska, Natalia; Kovar, John L.; Kohler, Keith; Kaspar, Thomas C.; Moorman, Thomas B.; Jaynes, Dan B.; Parkin, Timothy B.
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Potassium Bioavailability in a Tropical Kaolinitic Soil
errAGRONOMY-BASEL
IF3.4
err2021-10-07
err13
errOAAI
errVolf, Marcelo Raphael; Crusciol, Carlos Alexandre Costa; de Azevedo, Antonio Carlos; Thompson, Michael L.; Kovar, John L.; Rosolem, Ciro Antonio
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Riparian Land-Use, Stream Morphology and Streambank Erosion within Grazed Pastures in Southern Iowa, USA: A Catchment-Wide Perspective
errSUSTAINABILITY
IF3.3
err2020-08-11
err10
errOAAI
errTufekcioglu, Mustafa; Schultz, Richard C.; Isenhart, Thomas M.; Kovar, John L.; Russell, James R.
err分享
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Distribution and mass of groundwater orthophosphorus in an agricultural watershed
errSCIENCE OF THE TOTAL ENVIRONMENT
IF8
err2018-06-01
err15
errOAAI
errSchilling, Keith E.; Streeter, Matthew T.; Isenhart, Thomas M.; Beck, William J.; Tomer, Mark D.; Cole, Kevin J.; Kovar, John L.
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Inorganic and Organic Phosphorus in Sediments in the Walnut Creek Watershed of Central Iowa, USA
errWATER AIR AND SOIL POLLUTION
IF3
err2018-02-17
err21
PREAI
errRahutomo, Suroso; Kovar, John L.; Thompson, Michael L.
err分享
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Eleven years of runoff and phosphorus losses from two fields with and without manure application, Iowa, USA
errAGRICULTURAL WATER MANAGEMENT
IF6.5
err2016-04-01
err40
errOAAI
errTomer, M. D.; Moorman, T. B.; Kovar, J. L.; Cole, K. J.; Nichols, D. J.
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Corn Stover Nutrient Removal Estimates for Central Iowa, USA
errSUSTAINABILITY
IF3.3
err2015-07-02
err36
errOAAI
errKarlen, Douglas L.; Kovar, John L.; Birrell, Stuart J.
err分享
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Soil quality response to long-term tillage and crop rotation practices土壤质量对长期耕作和轮作措施的响应
errSOIL & TILLAGE RESEARCH
IF6.8
err2013-10-01
err153
PREAI
errKarlen, Douglas L.; Cambardella, Cynthia A.; Kovar, John L.; Colvin, Thomas S.
err分享
err收藏
Thirty-year tillage effects on crop yield and soil fertility indicators
errSOIL & TILLAGE RESEARCH
IF6.8
err2013-06-01
err108
PREAI
errKarlen, Douglas L.; Kovar, John L.; Cambardella, Cynthia A.; Colvin, Thomas S.
err分享
err收藏
Potassium uptake efficiency and dynamics in the rhizosphere of maize (Zea mays L.), wheat (Triticum aestivum L.), and sugar beet (Beta vulgaris L.) evaluated with a mechanistic model
errPLANT AND SOIL
IF4.1
err2010-01-23
err57
errOAAI
errSamal, Debasmita; Kovar, John L.; Steingrobe, Bernd; Sadana, Upkar S.; Bhadoria, Pratapbhanu S.; Claassen, Norbert
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Depletion of macro-nutrients from rhizosphere soil solution by juvenile corn, cottonwood, and switchgrass plants (vol 270, pg 213, 2005)
errPLANT AND SOIL
IF4.1
err2007-02-20
err2
errOAAI
errWang, Z. Y.; Kelly, J. M.; Kovar, J. L.
err分享
err收藏

研究方向

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合作期刊
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Matthew J. Helmers
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Philip A. Fay
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