Journal of environmental quality最新文献_第9页

Assessment of salt tolerance in phytodesalination candidates: Two varieties of Fimbristylis—F. ferruginea and F. tenuicula 评估候选植物的耐盐性：Fimbristylis-F. ferruginea 和 F. tenuicula 的两个品种。

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-02-07 DOI: 10.1002/jeq2.20544

Jinnawat Manasathien, Piyanut Khanema

{"title":"Assessment of salt tolerance in phytodesalination candidates: Two varieties of Fimbristylis—F. ferruginea and F. tenuicula","authors":"Jinnawat Manasathien, Piyanut Khanema","doi":"10.1002/jeq2.20544","DOIUrl":"10.1002/jeq2.20544","url":null,"abstract":"Phytodesalination, an environmentally sustainable solution for saline soil challenges, involves identifying salt-tolerant plants. This study meticulously examined Fimbristylis ferruginea and Fimbristylis tenuicula near the underground salt dome in Khon Kaen, Thailand, revealing unique physicochemical soil properties, morphology, metabolomic responses, and ionic sequestration mechanisms. Despite F. ferruginea’s lower ECe (21.79 vs. 41.46 dS m−1 for F. tenuicula), it excelled in sodium sequestration (504.42 g kg DW−1 vs. 246.32 g kg DW−1). Fimbristylis ferruginea’s roots efficiently locked sodium, facilitated by cyanidin, pelargonidin, and proline—compatible solutes crucial under salinity stress. Conversely, F. tenuicula, within the same genus and environment, responded to salinity stress by elongating roots and stems, enhancing salt storage, and increasing chlorophyll a content. Bioconcentration factor and translocation factor calculations designated F. ferruginea for phytostabilization and F. tenuicula for phytoextraction. This research emphasizes the assessment of salt tolerance in two Fimbristylis species, serving as natural salt reservoirs with low-cost implications. Remarkably, F. ferruginea dominated, storing up to 50% sodium in its biomass.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20544","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139702674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving crop growing conditions with water treatment residual and compost co-amendments: Soil–water dynamics 利用水处理残留物和堆肥改良作物生长条件：土壤水动态

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-01-31 DOI: 10.1002/jeq2.20541

Wendy Stone, Jan Steytler, Lurika de Jager, Ailsa Hardie, Catherine E. Clarke

{"title":"Improving crop growing conditions with water treatment residual and compost co-amendments: Soil–water dynamics","authors":"Wendy Stone, Jan Steytler, Lurika de Jager, Ailsa Hardie, Catherine E. Clarke","doi":"10.1002/jeq2.20541","DOIUrl":"10.1002/jeq2.20541","url":null,"abstract":"Land application of water treatment residual (WTR) in combination with phosphate-rich organic wastes, like compost or sewage sludge, in nutrient-poor soils was previously shown to promote crop growth. This WTR diversion from landfill to agriculture supports local and international mandates for waste circularity. Although soil–water dynamics—like saturated hydraulic conductivity, water retention, and hydrophobicity—are well-defined for compost and somewhat defined for WTR (except for hydrophobicity), the impacts of co-amending sandy soils with both are not well-defined. In laboratory analyses, co-amendment had an intermediate effect between individual amendments on the hydrophobic sandy soils, increasing water retention by 27% (WTR and compost both increased water retention), decreasing hydrophobicity by increasing hydraulic conductivity twofold (WTR and compost both decreased hydrophobicity), and having no effect on saturated hydraulic conductivity (decreased by WTR and increased by compost). With two positive effects and one “no effect” on soil–water dynamics in laboratory trials, the co-amendment was expected to buffer both crop water use efficiency (WUE) and nutrient availability under drought stress, for Swiss chard (Beta vulgaris L. var. cicla), co-investigated in a multifactorial pot trial. Soil nutrients, particularly phosphate, were shown more critical than soil–water dynamics to improve crop WUE. Thus, co-amended soils have significantly higher crop biomass and WUE than sandy soils. Phosphate-rich organic co-amendment is necessary for crop nutrient sufficiency and thus drought resilience in sandy soils amended with WTR. Thus, pairing wastes to soils for optimum fertility is a critical consideration in waste land application for both biomass and drought resilience.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20541","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139650944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of nighttime aerosols and relation to covariates over a highly polluted sub-Saharan site using Mann–Kendall and wavelet coherence approach 使用 Mann-Kendall 和小波相干性方法分析撒哈拉以南高污染地区的夜间气溶胶及其与协变量的关系。

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-01-31 DOI: 10.1002/jeq2.20543

Ali Köse, Salman Tariq, Banu Numan Uyal, Muhammad Khan, Husam Rjoub, Usman Mehmood

{"title":"Analysis of nighttime aerosols and relation to covariates over a highly polluted sub-Saharan site using Mann–Kendall and wavelet coherence approach","authors":"Ali Köse, Salman Tariq, Banu Numan Uyal, Muhammad Khan, Husam Rjoub, Usman Mehmood","doi":"10.1002/jeq2.20543","DOIUrl":"10.1002/jeq2.20543","url":null,"abstract":"High emissions of aerosols and trace gases during nighttime can cause serious air quality, climate, and health issues, particularly in extremely polluted cities. In this paper, an effort has been made to examine the variations in aerosols and trace gases over a sub-Saharan city of Ilorin (Nigeria) during nighttime. We have used Aerosol Robotic Network data of aerosol optical depth (AOD) at 500 nm, Angstrom exponent (AE) (440/870), and precipitable water (WVC). Both AE and WVC showed a decreasing trend of −0.0012% and −0.0010% per year, respectively. We also analyzed nighttime data of carbon monoxide (CO), methane (CH4), and ozone (O3) from Atmospheric Infrared Sounder and aerosol subtypes from CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation). AOD, AE, and WVC average values are found to be 0.64 ± 0.33, 0.74 ± 0.24, and 3.40 ± 0.97, respectively. As a result of northeasterly winds carrying Saharan dust during the dry season, the greatest value of AOD (1.29) was observed in February. Desert dust aerosols (37.63%) were the most prevalent type, followed by mixed aerosols (44.15%). Winds at a height of 1500 m above ground level were likely transporting Saharan dust to Ilorin. CALIPSO images revealed that Ilorin's atmosphere contained dust, polluted continental, clean maritime, and polluted dust on high AOD days. The National Oceanic and Atmospheric Administration's vertical sounding profiles showed that the presence of high AOD values was caused by the inversion layer trapping aerosol pollution. Average nighttime concentrations of CO, O3, and CH4 were measured to be 127 ± 18, 29.7 ± 2.1, and 1822.6 ± 12.7 ppbv, respectively. The wavelet coherence spectra exhibited significant quasi-biannual and quasi-annual oscillations at statistically significant levels.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139650943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soil organic carbon data comparison after 85 years and new 13C/12C compositions: The case study of the Ferrara province (Northeastern Italy) 85 年后的土壤有机碳数据对比和新的 13 C/12 C 合成：费拉拉省（意大利东北部）案例研究。

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-01-23 DOI: 10.1002/jeq2.20542

Gian Marco Salani, Gianluca Bianchini, Valentina Brombin, Claudio Natali

{"title":"Soil organic carbon data comparison after 85 years and new 13C/12C compositions: The case study of the Ferrara province (Northeastern Italy)","authors":"Gian Marco Salani, Gianluca Bianchini, Valentina Brombin, Claudio Natali","doi":"10.1002/jeq2.20542","DOIUrl":"10.1002/jeq2.20542","url":null,"abstract":"The main causes of soil organic matter (SOM) loss are land use (e.g., conventional agriculture) and land-use change (e.g., conversion of wetlands into croplands). Before World War II and until 1960s, the Ferrara province in the Emilia-Romagna region (Northeast Italy) enlarged its agricultural production area through drainage of wetlands. After that, the newly drained area was put into intensive agricultural production with practices that proved to be unsustainable, and whose negative effects (depletion of soil organic carbon [SOC] and emissions of greenhouse gases [GHGs], e.g., CO2) have never been quantified. In this work, we estimated the changes in SOC 85 years after the drainage of the palustrine environment, by comparing 1937 SOC measurements with those made in 2022. Comparison of SOC maps from 1937 and 2022 indicates that most of the area suffered a significant SOC loss (∆OC85 years from 0.05 to 18.57 wt%), except for northern areas in which the peat nature of the soil has been preserved. We also measured the 13C/12C on the 2022 soil samples and generated a present-day map of the SOC isotopic ratios, which could be used in future as a benchmark to evaluate changes in soil carbon stocks and fluxes.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20542","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139542360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential for managing pool levels in a flood-control reservoir to increase nitrate-nitrogen load reductions 管理防洪水库水池水位的潜力，以增加硝酸盐氮负荷的减少量。

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-01-23 DOI: 10.1002/jeq2.20539

Keith E. Schilling, Matthew T. Streeter, Elliot Anderson, Jennifer Merryman, Thomas Isenhart, Antonio Arenas-Amado, Chuck Theiling

{"title":"Potential for managing pool levels in a flood-control reservoir to increase nitrate-nitrogen load reductions","authors":"Keith E. Schilling, Matthew T. Streeter, Elliot Anderson, Jennifer Merryman, Thomas Isenhart, Antonio Arenas-Amado, Chuck Theiling","doi":"10.1002/jeq2.20539","DOIUrl":"10.1002/jeq2.20539","url":null,"abstract":"Few strategies are available to reduce nitrate-nitrogen (NO3-N) loads at larger landscape scales, but flood control reservoirs are known to reduce riverine loads. In this study, we evaluated the potential to increase nitrogen (N) loss at Lake Red Rock, a large reservoir located in central Iowa, by evaluating the inundation of sediments deposited at the reservoir inflow. Sediment samples were collected at 51 locations in the lower delta region and analyzed for particle size and nutrient content. Nitrogen loss rates in delta sediments were determined from laboratory assays, and satellite imagery was used to develop a rating curve to quantify land area inundated within the delta. The daily mass of NO3-N reduced with delta inundation was estimated by applying the mean N 24-h loss rate (0.66 g N m2 day−1) by the area of inundation (m2). Results indicated that raising pool elevations to inundate more of the delta would result in greater N losses, ranging from 2 to 377 Mg per year. Potential N loss of 102 Mg achieved by increasing pool stage by 0.5 m would be equivalent to installing nearly 650 edge-of-field practices in the watershed. Although more work is needed to integrate with an existing environmental pool management plan, study results indicate that reservoir management could achieve N reductions at a novel landscape scale.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20539","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139542355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Benefitting productivity and the environment: Current and future maize cropping systems improve yield while reducing nitrate load 提高生产力，保护环境：当前和未来的玉米种植系统在提高产量的同时减少硝酸盐负荷。

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-01-23 DOI: 10.1002/jeq2.20537

Frank G. Dohleman, Ty J. Barten, Nicholas Helland, Subash Dahal, Juan Lopez Arrizia, Sarah Gehlhar, Charles Foresman, David Mack, Kelly Gillespie, Sotirios Archontoulis, Michael J. Castellano

{"title":"Benefitting productivity and the environment: Current and future maize cropping systems improve yield while reducing nitrate load","authors":"Frank G. Dohleman, Ty J. Barten, Nicholas Helland, Subash Dahal, Juan Lopez Arrizia, Sarah Gehlhar, Charles Foresman, David Mack, Kelly Gillespie, Sotirios Archontoulis, Michael J. Castellano","doi":"10.1002/jeq2.20537","DOIUrl":"10.1002/jeq2.20537","url":null,"abstract":"Increases in cereal crop yield per area have increased global food security. “Era” studies compare historical and modern crop varieties in controlled experimental settings and are routinely used to understand how advances in crop genetics and management affect crop yield. However, to date, no era study has explored how advances in maize (Zea mays L.) genetics and management (i.e., cropping systems) have affected environmental outcomes. Here, we developed a cropping systems era study in Iowa, USA, to examine how yield and nitrate losses have changed from “Old” systems common in the 1990s to “Current” systems common in the 2010s, and to “Future” systems projected to be common in the 2030s. We tested the following hypothesis: If maize yield and nitrogen use efficiency have improved over previous decades, Current and Future maize systems will have benefits to water quality compared to Old systems. We show that not only have maize yield and nitrogen use efficiency (kg grain kg−1 N), on average, improved over time but also yield-scaled nitrate load + soil nitrate was reduced by 74% and 91% from Old to Current and Future systems, respectively. Continuing these trajectories of improvement will be critical to meet the needs of a growing and more affluent population while reducing deleterious effects of agricultural systems on ecosystem services.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20537","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139542353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phosphorus removal from agricultural tile drainage effluent with activated alumina in novel adsorption reactors 在新型吸附反应器中使用活性氧化铝去除农用瓦片排水中的磷。

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-01-20 DOI: 10.1002/jeq2.20540

Barry Husk, Gordon Balch, Juan Sebastian Sanchez, Leanne Ejack, Joann K. Whalen

{"title":"Phosphorus removal from agricultural tile drainage effluent with activated alumina in novel adsorption reactors","authors":"Barry Husk, Gordon Balch, Juan Sebastian Sanchez, Leanne Ejack, Joann K. Whalen","doi":"10.1002/jeq2.20540","DOIUrl":"10.1002/jeq2.20540","url":null,"abstract":"Subsurface tile drains under agricultural field crops are a major source of phosphorus (P) discharge to aquatic ecosystems, contributing to the eutrophication of surface waters. Adsorption reactors for P removal from drainage water (P-reactors) could reduce P outflow from agricultural land but were rarely studied in cold, temperate climates. In our study, four low-cost P-reactors were installed in agricultural fields in south-central Québec, Canada. Activated alumina (AA) beads were used as P-adsorptive material, and the reactors were connected to tile drain outlets. Paired water samples (39 events) from reactor inlets and outlets were analyzed for P species and other physicochemical parameters during one calendar year to assess the P removal from tile drain effluent in the P-reactors. Collectively, the P-reactors retained approximately half (48%) of the total mass of P flowing through the tile drains, mostly (92%) as particulate P. The mass of AA beads adsorbed 11% of the dissolved-P fractions. Results are interpreted in the context of the field drainage area and will require adjustments to the P-reactor design to accommodate larger fields. The P-reactors remained structurally intact throughout all four seasons in a cold temperate climate, showing the potential of simple, inexpensive P-reactors to reduce P concentration in tile drain effluent.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20540","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139502529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nitrous oxide emissions are driven by environmental conditions rather than nitrogen application methods in a perennial hayfield 氧化亚氮的排放受环境条件而非多年生草场施氮方法的影响

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2023-12-21 DOI: 10.1002/jeq2.20536

Sarah Brickman, Heather Darby, Lindsey Ruhl, E. Carol Adair

{"title":"Nitrous oxide emissions are driven by environmental conditions rather than nitrogen application methods in a perennial hayfield","authors":"Sarah Brickman, Heather Darby, Lindsey Ruhl, E. Carol Adair","doi":"10.1002/jeq2.20536","DOIUrl":"10.1002/jeq2.20536","url":null,"abstract":"Agricultural best management practices (BMPs) intended to solve one environmental challenge may have unintended climate impacts. For example, manure injection is often promoted for its potential to reduce runoff and nitrogen (N) loss as NH3, but the practice has been shown to increase N2O, a powerful greenhouse gas, compared to surface application. Urease inhibitor application with N fertilizer is another BMP that can enhance N retention by reducing NH3 emissions, but its impact on N2O emissions is mixed. Thus, we measured N2O, CO2, soil mineral N availability, soil moisture, soil temperature, and yield in a 2-year perennial hayfield trial with four fertilization treatments (manure injection, manure broadcast, synthetic urea, and control) applied with or without a urease inhibitor in Alburgh, VT. We used linear models to examine treatment effects on daily and cumulative N2O emissions and a boosted regression tree (BRT) model to identify the most important drivers of daily N2O fluxes in our trial. While fertilization type had a significant impact on N2O fluxes (p < 0.05), our treatments explained an unexpectedly small amount of the variation in emissions (R2 = 0.042), and urease inhibitor had no effect. Instead, soil moisture was the most important predictor of daily N2O fluxes (39.7% relative influence in BRT model), followed by CO2 fluxes, soil inorganic N, and soil temperature. Soil moisture and temperature interacted to produce the largest daily N2O fluxes when both were relatively high, suggesting that injecting manure during dry periods or during wet but cool periods could reduce its climate impacts.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20536","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138823429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A short history of the phosphorus index and Andrew Sharpley's contributions from inception through development and implementation. 磷指数简史和安德鲁-夏普利从开始到发展和实施的贡献。

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2023-12-21 DOI: 10.1002/jeq2.20535

Deanna L Osmond, Peter J A Kleinman, Frank Coale, Nathan O Nelson, Carl H Bolster, Josh McGrath

{"title":"A short history of the phosphorus index and Andrew Sharpley's contributions from inception through development and implementation.","authors":"Deanna L Osmond, Peter J A Kleinman, Frank Coale, Nathan O Nelson, Carl H Bolster, Josh McGrath","doi":"10.1002/jeq2.20535","DOIUrl":"10.1002/jeq2.20535","url":null,"abstract":"In the 1980s, growing recognition of agricultural phosphorus (P) sources to surface water eutrophication led to scrutiny of animal feeding operations. In 1990, the USDA-Natural Resources Conservation Service (NRCS) invited prominent scientists to find a solution. It was at an initial meeting that Dr. Andrew Sharpley suggested that P assessment could be modeled after the Universal Soil Loss Equation, where a matrix of factors influencing P loss would be associated with farm nutrient management recommendations. After codifying the P assessment into the USDA-NRCS 590 Nutrient Management Standard some 10 years later, 48 states chose to develop their own P Index. Sharpley, working with many others, helped develop several state P Indices. In 2000, Sharpley secured funding from the USDA-Agricultural Research Service to support the National P Research Project, which conducted in-field P runoff assessments using standardized rainfall simulated studies across 20 states; this allowed individual trials to be aggregated for agroecological regions that were then incorporated into specific state P Indices. Eventually, comparison of P Indices across state boundaries led to a white paper at the behest of USDA-NRCS that resulted in three regional projects evaluating modeling approaches to support or replace P Indices. Sharpley's national umbrella project pointed to shortcomings in water quality models, such as APEX or TBET, as a replacement for state P Indices, which remain a key part of the USDA-590 standard. As a selfless leader, capable of attracting and assembling diverse, productive interdisciplinary teams, Sharpley was essential to the inception, development, and implementation of the P Index.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138830050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Soil greenhouse gas flux and nitrogen mineralization following manure application from tannin-fed dairy cows 施用单宁饲养奶牛粪便后的土壤温室气体通量和氮矿化。

IF 2.4 4区环境科学与生态学

Journal of environmental quality Pub Date : 2023-12-06 DOI: 10.1002/jeq2.20534

Claire A. Romanko, Justin D. Gay, J. Mark Powell, Michel Wattiaux, Carol Barford, Rebecca A. Larson, Matthew D. Ruark

{"title":"Soil greenhouse gas flux and nitrogen mineralization following manure application from tannin-fed dairy cows","authors":"Claire A. Romanko, Justin D. Gay, J. Mark Powell, Michel Wattiaux, Carol Barford, Rebecca A. Larson, Matthew D. Ruark","doi":"10.1002/jeq2.20534","DOIUrl":"10.1002/jeq2.20534","url":null,"abstract":"Growing concerns about environmental impacts of dairy farms have driven producers to address greenhouse gas (GHG) emissions and nitrogen (N) losses from soil following land application of dairy manure. Tannin dietary additives have proved to be a successful intervention for mitigating GHG and ammonia (NH3) emissions at the barn scale. However, it is unknown how land application of dairy manure from cows fed tannin diets affects crop–soil nitrogen dynamics and soil GHG flux. To test this, cows were fed diets at three levels of tannins (0.0%, 0.4%, and 1.8% of dry matter intake) and their manure was field applied at two N rates (240 and 360 kg N ha−1). Soil NH4+-N, NO3−-N, corn silage yield, and soil GHG flux were then measured over a full growing season. Soils amended with tannin manure had lower initial NH4+-N concentrations and lower total mineral N (NH4+-N + NO3−-N) concentrations 19 days after application, compared to soils amended with no tannin manures. Despite lower early season N availability in tannin-fertilized plots, there were no differences in corn silage yield. No differences in soil GHG and NH3 emissions were observed between manure-amended treatments. These results demonstrate that while tannin addition to dairy cow feed does not offer short-term GHG or NH3 emissions reductions after field manure application, it can promote slower soil N mineralization that may reduce reactive N loss after initial application.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20534","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138487703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0