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Journal of environmental quality
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7982-2018
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2018 v.47 no.4
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- Author:
- Ryan C. Byrnes; Danny J. Eastburn; Kenneth W. Tate; Leslie M. Roche
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 758-765
- ISSN:
- 0047-2425
- Subject:
- bulk density; carbon nitrogen ratio; climate change; continuous grazing; dry environmental conditions; grazing intensity; grazing lands; grazing management; guidelines; issues and policy; livelihood; livestock; meta-analysis; rotational grazing; soil; soil compaction; soil organic carbon; soil quality; subhumid zones; total nitrogen
- Abstract:
- ... Grazing lands support the livelihoods of millions of people across nearly one-half of the globe. Soils are the backbone of stability and resilience in these systems. To determine livestock grazing impacts on soil health, we conducted a global meta-analysis of soil organic carbon (SOC), total N, C/N ratio, and bulk density responses to grazing strategies (continuous, rotational, and no grazing) and ...
- DOI:
- 10.2134/jeq2017.08.0313
- https://doi.org/10.2134/jeq2017.08.0313
- Author:
- Feier Wang; Zuolei Sun; Siyuan Zheng; Jie Yu; Xinqiang Liang
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 922-929
- ISSN:
- 0047-2425
- Subject:
- aquaculture; livestock farming; losses from soil; models; municipal wastewater; nitrogen; nonpoint source pollution; phosphorus; pollution control; risk; water quality; watersheds; China
- Abstract:
- ... Nonpoint sources are difficult to control because their nutrient contribution from different parts of a watershed can vary substantially. Identifying critical source areas of nutrient loss is an important step in watershed pollution mitigation programs. This study sought to use an integrated index model to differentiate between subbasins that serve as critical source areas of N and P nonpoint sour ...
- DOI:
- 10.2134/jeq2017.12.0469
- https://doi.org/10.2134/jeq2017.12.0469
- Author:
- Edward Flathers; Paul E. Gessler
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 726-734
- ISSN:
- 0047-2425
- Subject:
- computer software; funding; metadata; prediction; small cereal grains; soil organic carbon; soil properties; soil quality; statistical models; Northwestern United States
- Abstract:
- ... As funding agencies embrace open science principles that encourage sharing data and computer code developed to produce research outputs, we must respond with new modes of publication. Furthermore, as we address the expanding reproducibility crisis in the sciences, we must work to release research materials in ways that enable reproducibility—publishing data, computer code, and research products in ...
- DOI:
- 10.2134/jeq2017.08.0318
- CHORUS:
- 10.2134/jeq2017.08.0318
- https://doi.org/10.2134/jeq2017.08.0318
- Author:
- P. R. Nash; H. T. Gollany; U. M. Sainju
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 674-683
- ISSN:
- 0047-2425
- Subject:
- Hordeum vulgare; Pisum sativum; arid lands; barley; carbon dioxide; climate change; climatic factors; conventional tillage; cropping sequence; fallow; fertilizer rates; grain yield; greenhouse gas emissions; nitrogen fertilizers; no-tillage; peas; simulation models; soil organic carbon; soil quality; topsoil; Great Plains region; Montana
- Abstract:
- ... Traditional dryland crop management includes fallow and intensive tillage, which have reduced soil organic carbon (SOC) over the past century, raising concerns regarding soil health and sustainability. The objectives of this study were: (i) to use CQESTR, a process-based C model, to simulate SOC dynamics from 2006 to 2011 and to predict relative SOC trends in cropping sequences that included barle ...
- Handle:
- 10113/5935598
- DOI:
- 10.2134/jeq2017.07.0273
- https://doi.org/10.2134/jeq2017.07.0273
- Author:
- Marta B. Roser; Gary W. Feyereisen; Kurt A. Spokas; David J. Mulla; Jeffrey S. Strock; Jessica Gutknecht
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 856-864
- ISSN:
- 0047-2425
- Subject:
- Macadamia; acetates; biochar; bioreactors; carbon; coconuts; coir; conservation practices; corn cobs; cropland; denitrification; drainage; hardwood; improved wood; laboratory experimentation; nitrate nitrogen; nitrates; nitrogen; pollution load; sodium acetate; spring; surface water; temperature; wood chips; Midwestern United States
- Abstract:
- ... Nitrogen losses from croplands contribute to impairment of water bodies. This laboratory experiment evaluated various C sources for use in a denitrifying bioreactor, a conservation practice designed to reduce N losses. The nitrate removal efficiency of candidate treatments (corn cobs [CC], corn cobs with modified coconut coir [CC+MC], corn cobs with modified coconut coir and modified macadamia she ...
- DOI:
- 10.2134/jeq2018.02.0082
- https://doi.org/10.2134/jeq2018.02.0082
- Author:
- Andrew Sharpley; Helen Jarvie; Don Flaten; Peter Kleinman
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 774-777
- ISSN:
- 0047-2425
- Subject:
- animal manures; byproducts; conservation practices; food prices; phosphorus; production technology; public-private partnerships; resource management; supply chain
- Abstract:
- ... 2019 will be the 350th anniversary of the discovery of phosphorus (P) by the alchemist Hennig Brandt. This perspective traces the historical threads that P has weaved through the fabric of our society and identifies challenges to improve P stewardship in the future and for our future. A century after Brandt’s discovery, P was identified in bone ash, which became the primary source of P until guano ...
- DOI:
- 10.2134/jeq2018.05.0170
- https://doi.org/10.2134/jeq2018.05.0170
- Author:
- I. C. Romero-Soto; O. Dia; L. A. Leyva-Soto; P. Drogui; G. Buelna; L. M. Díaz-Tenorio; R. G. Ulloa-Mercado; P. Gortáres-Moroyoqui
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 805-811
- ISSN:
- 0047-2425
- Subject:
- animal production; anodes; antibiotics; aquaculture; aquaculture industry; aquatic environment; chloramphenicol; developing countries; energy; farming systems; inorganic compounds; wastewater
- Abstract:
- ... Chloramphenicol (CAP) is a broad-spectrum antibiotic widely used in animal farming and aquaculture industries. Despite its ban in many countries around the world, it is still used in several developing countries, with harmful effects on the surrounding aquatic environment. In this study, an electrooxidation process using a Ti/PbO₂ anode was used to investigate the degradation of CAP in both synthe ...
- DOI:
- 10.2134/jeq2017.12.0475
- https://doi.org/10.2134/jeq2017.12.0475
- Author:
- Gabriel Maltais-Landry; Nicolas Bertoni; Will Valley; Nicholas Grant; Zoran Nesic; Sean M. Smukler
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 914-921
- ISSN:
- 0047-2425
- Subject:
- ammonium; carbon; carbon dioxide; chickens; environmental impact; greenhouse gas emissions; greenhouse gases; horses; methane; nitrates; nitrogen; nitrogen cycle; nitrous oxide; soil amendments; temperature; total nitrogen; water holding capacity
- Abstract:
- ... Manure-based soil amendments (MBSAs) must be managed optimally to maximize N concentration and availability while minimizing environmental impacts (e.g., greenhouse gas [GHG]) emissions. We conducted an 83-d incubation study to determine the effects of different moisture (60 or 120% of water-holding capacity [WHC]) and temperature (4 or 20°C) conditions during the decomposition of MBSAs. We measur ...
- DOI:
- 10.2134/jeq2017.11.0420
- https://doi.org/10.2134/jeq2017.11.0420
- Author:
- Hero T. Gollany; Rodney T. Venterea
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 579-587
- ISSN:
- 0047-2425
- Subject:
- agricultural management; agroecosystems; arid lands; biomass; climate; climate change; crop yield; ecosystem management; grasslands; landscapes; meta-analysis; models; pastures; soil organic carbon; temperature
- Abstract:
- ... Adapting to the anticipated impacts of climate change is a pressing issue facing agriculture, as precipitation and temperature changes are expected to have major effects on agricultural production in many regions of the world. These changes will also affect soil organic matter decomposition and associated stocks of soil organic C (SOC), which have the potential to feed back to climate change and a ...
- Handle:
- 10113/6472330
- DOI:
- 10.2134/jeq2018.05.0213
- https://doi.org/10.2134/jeq2018.05.0213
- Author:
- K. Christy Tanner; Lisamarie Windham-Myers; Mark Marvin-DiPasquale; Jacob A. Fleck; Kenneth W. Tate; Bruce A. Linquist
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 830-838
- ISSN:
- 0047-2425
- Subject:
- Oryza sativa; drainage water; fallow; growing season; irrigation water; mercury; methylmercury compounds; paddies; rice; rice straw; soil; surface water; toxicity; water quality; California
- Abstract:
- ... Few studies have considered how methylmercury (MeHg, a toxic form of Hg produced in anaerobic soils) production in rice (Oryza sativa L.) fields can affect water quality, and little is known about MeHg dynamics in rice fields. Surface water MeHg and total Hg (THg) imports, exports, and storage were studied in two commercial rice fields in the Sacramento Valley, California, where soil THg was low ( ...
- DOI:
- 10.2134/jeq2017.10.0390
- https://doi.org/10.2134/jeq2017.10.0390
- Author:
- Asma Jebari; Agustin del Prado; Guillermo Pardo; José Antonio Rodríguez Martín; Jorge Álvaro-Fuentes
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 644-653
- ISSN:
- 0047-2425
- Subject:
- United Nations Framework Convention on Climate Change; agricultural land; carbon sequestration; carbon sinks; climate change; crops; models; no-tillage; soil organic carbon; surface area; temperature; vegetation cover; Spain
- Abstract:
- ... Soil organic C (SOC) stock assessments at the regional scale under climate change scenarios are of paramount importance in implementing soil management practices to mitigate climate change. In this study, we estimated the changes in SOC sequestration under climate change conditions in agricultural land in Spain using the RothC model at the regional level. Four Intergovernmental Panel on Climate Ch ...
- DOI:
- 10.2134/jeq2017.07.0294
- https://doi.org/10.2134/jeq2017.07.0294
- Author:
- Curtis D. Jones; Lawrence G. Oates; G. Philip Robertson; R. Cesar Izaurralde
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 710-717
- ISSN:
- 0047-2425
- Subject:
- Glycine max; Miscanthus; Panicum virgatum; Secale; Zea mays; biofuels; climate; corn; cover crops; double cropping; feedstocks; fuel production; harvesting; models; perennials; rye; soil; soil organic carbon; stover; Midwestern United States
- Abstract:
- ... While the US Midwest is expected to serve as a primary feedstock source for cellulosic biofuel production, the impacts of residue harvesting on soil organic carbon (SOC) may greatly limit sustainable production capacity. However, viable feedstock production could be realized through adoption of management practices and cropping systems that offset residue-harvest-induced SOC losses. Sequestration ...
- DOI:
- 10.2134/jeq2017.04.0177
- https://doi.org/10.2134/jeq2017.04.0177
- Author:
- P. R. Nash; H. T. Gollany; J. M. Novak; P. J. Bauer; P. G. Hunt; D. L. Karlen
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 663-673
- ISSN:
- 0047-2425
- Subject:
- Glycine max; Gossypium hirsutum; Kandiudults; Secale cereale; Triticum aestivum; Zea mays; climate change; conservation tillage; conventional tillage; corn; cover crops; crop rotation; crop yield; humid zones; loamy sand soils; models; rye; soil organic carbon; soil profiles; winter; winter wheat
- Abstract:
- ... Intensive tillage, low-residue crops, and a warm, humid climate have contributed to soil organic carbon (SOC) loss in the southeastern Coastal Plains region. Conservation (CnT) tillage and winter cover cropping are current management practices to rebuild SOC; however, there is sparse long-term field data showing how these management practices perform under variable climate conditions. The objectiv ...
- Handle:
- 10113/5935600
- DOI:
- 10.2134/jeq2017.05.0190
- https://doi.org/10.2134/jeq2017.05.0190
- Author:
- Hero T. Gollany; Robert W. Polumsky
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 625-634
- ISSN:
- 0047-2425
- Subject:
- Sorghum bicolor subsp. drummondii; Triticum aestivum; arid lands; climate; climate change; climate models; cropping systems; data collection; emissions; environmental assessment; grain yield; no-tillage; plows; soil depth; soil organic carbon; soil quality; weather; winter wheat; Oregon
- Abstract:
- ... Managing dryland cropping systems to increase soil organic C (SOC) under changing climate is challenging after decades of winter wheat (Triticum aestivum L.)–fallow and moldboard plow tillage (W–F/MP). The objective was to use CQESTR, a process-based C model, and SOC data collected in 2004, 2008, and 2012 to predict the best management to increase SOC under changing climate in four cropping system ...
- Handle:
- 10113/5935602
- DOI:
- 10.2134/jeq2017.09.0374
- https://doi.org/10.2134/jeq2017.09.0374
- Author:
- Tor-Gunnar Vågen; Leigh Ann Winowiecki; Wayne Twine; Karen Vaughan
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 746-757
- ISSN:
- 0047-2425
- Subject:
- algorithms; clay; climatic factors; ecosystems; environmental health; land management; landscapes; model validation; pH; prediction; remote sensing; sand; sand fraction; savannas; soil erosion; soil organic carbon; soil texture; spectroscopy; statistical models; topsoil; South Africa
- Abstract:
- ... Drivers of soil organic carbon (SOC) dynamics involve a combination of edaphic, human, and climatic factors that influence and determine SOC distribution across the landscape. High-resolution maps of key indicators of ecosystem health can enable assessments of these drivers and aid in critical management decisions. This study used a systematic field-based approach coupled with statistical modeling ...
- DOI:
- 10.2134/jeq2017.07.0300
- https://doi.org/10.2134/jeq2017.07.0300
- Author:
- Peter A. Vadas; Melanie N. Stock; Gary W. Feyereisen; Francisco J. Arriaga; Laura W. Good; K. G. Karthikeyan
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 848-855
- ISSN:
- 0047-2425
- Subject:
- ammonia; risk; ammonium; application rate; dairy manure; liquid manure; melting; nitrogen; nutrient management; phosphorus; runoff; snow; snowmelt; snowpack; temperature; volatilization; water quality; winter
- Abstract:
- ... Agricultural nutrient management is an issue due to N and P losses from fields and water quality degradation. Better information is needed on the risk of nutrient loss in runoff from dairy manure applied in winter. We investigated the effect of temperature on nutrient release from liquid and semisolid manure to water, and of manure quantity and placement within a snowpack on nutrient release to me ...
- Handle:
- 10113/6743204
- DOI:
- 10.2134/jeq2017.12.0464
- https://doi.org/10.2134/jeq2017.12.0464
- Author:
- Farzin Malekani; M. Cathryn Ryan; Bernie J. Zebarth; Shawn E. Loo; Martin Suchy; Edwin E. Cey
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 795-804
- ISSN:
- 0047-2425
- Subject:
- Rubus idaeus; agricultural land; autumn; groundwater; hydraulic conductivity; mass transfer; monitoring; nitrate nitrogen; nitrates; pollution load; raspberries; samplers; water pollution; water quality
- Abstract:
- ... The quantification of groundwater NO₃ loading associated with a specific field or set of management practices so that groundwater quality improvements can be objectively assessed is a major challenge. The magnitude and timing of NO₃ export from a single agricultural field under raspberry (Rubus idaeus L.) production were investigated by combining high-resolution groundwater NO₃ concentration profi ...
- DOI:
- 10.2134/jeq2017.09.0369
- https://doi.org/10.2134/jeq2017.09.0369
- Author:
- Maria Chu; Jorge Guzman; Maria Villamil
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 596-606
- ISSN:
- 0047-2425
- Subject:
- Glycine max; Zea mays; agroecosystems; air temperature; climate models; climatic factors; corn; crop rotation; data collection; nitrogen; simulation models; soil; soil organic carbon; uncertainty; Illinois
- Abstract:
- ... Soil organic C (SOC) is significantly affected by changes in climate that control the physical, chemical, and biological processes in the soil. Simulating the impacts of future climate on SOC is challenging due to the limited availability of soil and climate variables required to properly simulate future SOC dynamics. The main objective of this study was to develop a modeling framework to quantify ...
- DOI:
- 10.2134/jeq2017.07.0295
- https://doi.org/10.2134/jeq2017.07.0295
19. Ammonia Emissions from Subalpine Forest and Mountain Grassland Soils in Rocky Mountain National Park
- Author:
- Joshua J. Stratton; Jay Ham; Thomas Borch
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 778-785
- ISSN:
- 0047-2425
- Subject:
- air temperature; airshed; ammonia; ammonium; ammonium nitrogen; ecosystems; emissions; eutrophication; forest soils; forests; grassland soils; grasslands; isotopes; mechanistic models; national parks; wet deposition; Colorado
- Abstract:
- ... Atmospheric deposition of NH₃ and NH₄⁺ contributes to eutrophication within sensitive subalpine ecosystems of Rocky Mountain National Park (RMNP) in the United States. However, little is known about the local contribution of NH₃ from soils within the park. Thus, the goal of this study was to quantify and compare NH₃ emissions from intact soil cores sampled from a subalpine grassland and forest wit ...
- DOI:
- 10.2134/jeq2018.01.0023
- https://doi.org/10.2134/jeq2018.01.0023
- Author:
- Camilla A. Gardiner; Timothy J. Clough; Keith C. Cameron; Hong J. Di; Grant R. Edwards; Cecile A. M. de Klein
- Source:
- Journal of environmental quality 2018 v.47 no.4 pp. 812-819
- ISSN:
- 0047-2425
- Subject:
- Lolium perenne; allantoin; autumn; biodegradation; creatine; creatinine; emissions factor; excretion; field experimentation; greenhouse gas emissions; hypoxanthine; isotope labeling; laboratory experimentation; nitrogen; nitrogen content; nitrous oxide; pastures; ruminants; soil; stable isotopes; urea; uric acid; urine; xanthine
- Abstract:
- ... Urea, the dominant form of N in ruminant urine, degrades in soil to produce N₂O emissions. However, the fate of non-urea urine N compounds (NUNCs) in soil and their contribution to urine patch N₂O emissions remain unclear. This study evaluated five NUNCs: allantoin (10%), creatinine (3%), creatine (3%), uric acid (1%), and (hypo)xanthine (0.6%), where numbers in parentheses represent the average p ...
- DOI:
- 10.2134/jeq2018.03.0112
- https://doi.org/10.2134/jeq2018.03.0112