Journal of environmental quality最新文献

{"title":"Crop bromide concentrations following methyl bromide fumigation for pale cyst nematode in southeastern Idaho","authors":"Christopher W. Rogers,&nbsp;Juliet M. Marshall,&nbsp;Margaret Moll,&nbsp;Cynthia Curl","doi":"10.1002/jeq2.20529","DOIUrl":"10.1002/jeq2.20529","url":null,"abstract":"<p>Methyl bromide (MeBr) is a sterilizing fumigant used to control quarantine pests that is restricted due to its detrimental atmospheric effects. The degradation of injected MeBr produces crop-available Br⁻. Up to five applications of MeBr were used in southeastern Idaho fields to combat the pale cyst nematode (<i>Globodera pallida</i>). Data regarding the uptake and partitioning of Br⁻ in crops following MeBr application in the region were unavailable. Research determined background concentrations of Br⁻ in alfalfa (<i>Medicago sativa</i> L.), barley (<i>Hordeum vulgare</i> L.), corn (<i>Zea mays</i> L.), potato (<i>Solanum tuberosum</i> L.), and wheat (<i>Triticum aestivum</i> L.) compared to MeBr-treated fields. Background Br⁻ concentrations ranged from nondetectable (ND) to 33.0 mg Br⁻ kg⁻¹; vegetative tissue concentrations were greater than reproductive, except corn where there was no difference. Nearly all crops grown in MeBr-treated fields had greater Br⁻ concentrations than background. Background-baled-alfalfa tissue Br⁻ concentration was 33.0 mg kg⁻¹ compared to 117.8 mg Br⁻ kg⁻¹ from a MeBr-treated field. Br⁻ concentration in green alfalfa decreased from 79.8 to 36.5 mg Br⁻ kg⁻¹ at the final cutting in a MeBr-treated field, where time after application decreased crop Br⁻ concentrations. Small grains had low Br⁻ concentrations in reproductive tissue (1.7 mg Br⁻ kg⁻¹) compared to vegetative tissue (106.5 mg Br⁻ kg⁻¹). Corn stover concentration (12.7 mg Br⁻ kg⁻¹) was low relative to small-grain straw, but corn ear (5.8 mg Br⁻ kg⁻¹) was greater than small-grain reproductive tissue in the MeBr-treated field. Crop selection following MeBr applications should consider the likelihood of elevated Br⁻ concentration for the plant fractions intended end use.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20529","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71521716","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}

{"title":"Split fertilizer nitrogen application with a cereal rye cover crop reduces tile nitrate loads in a corn–soybean rotation","authors":"Lowell E. Gentry,&nbsp;John M. Green,&nbsp;Corey A. Mitchell,&nbsp;Luis F. Andino,&nbsp;Michelle K. Rolf,&nbsp;D. Schaefer,&nbsp;Emerson D. Nafziger","doi":"10.1002/jeq2.20530","DOIUrl":"10.1002/jeq2.20530","url":null,"abstract":"<p>Splitting fertilizer nitrogen (N) applications and using cover crops are management strategies to reduce nitrate in tile drainage water. We investigated split fertilizer N applications to corn (<i>Zea mays</i> L.) on crop yields and tile nitrate loss in both corn and soybean (<i>Glycine max</i> L.) in rotation from 2016 through 2019. We evaluated the inclusion of cover crops in a split-N treatment. Fertilizer N treatments included 100% in the fall; 50% in the fall + 25% at planting + 25% at side-dress; 100% as spring preplant; 75% as spring preplant (reduced N rate); 50% as spring preplant + 50% at side-dress; and 50% as spring preplant + 50% at side-dress with a cover crop. We did not find significant differences between split and single full rate N application treatments for corn yields or tile nitrate loss; however, the reduced N rate treatment significantly decreased corn yield by 10%. Cumulative tile nitrate losses (over four seasons) ranged from 115 kg ha⁻¹ for all of the N in the fall to 65 kg ha⁻¹ for 50% as spring preplant + 50% at side-dress with a cover crop, a decrease of 43%. Tile nitrate loss responded similarly to (corn) N treatments under both corn and soybean, with 64% of the loss under corn and 36% under soybean. Our results suggest that decreasing the fertilizer N rate may impact corn yield more than nitrate loss, while split fertilizer N application with a cover crop has potential to reduce tile nitrate loss without decreasing crop yield.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20530","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71521717","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}

{"title":"Assessment of phosphorus status in a calcareous soil receiving long-term application of chemical fertilizer and different forms of swine manures","authors":"Busayo Kodaolu,&nbsp;Ibrahim Mohammed,&nbsp;Yutao Wang,&nbsp;Tiequan Zhang,&nbsp;Yuki Audette,&nbsp;James Longstaffe","doi":"10.1002/jeq2.20528","DOIUrl":"10.1002/jeq2.20528","url":null,"abstract":"<p>The continuous use of organic inputs in crop production calls for an improved understanding of how these inputs might alter soil phosphorus (P). This study assessed how the continuous application of different forms of swine manure influences the mechanism of P transformation and release potential. Soil samples were collected from a clay loam soil receiving no P or 100 kg P ha⁻¹ applied as either chemical fertilizer (CHEM), swine liquid manure (SWL), composted swine manure (SWC), or solid swine manure (SWS) every other year for 16 years in a corn–soybean rotation. Available P increased in soils treated with the chemical and organic fertilizers. The greatest increase was found in the SWC and SWS and was closely related to a 1% increase in the organic C content, and 1.3- and 1.2-unit increase in the soil pH for SWC and SWS treatment, respectively. Nonlabile HCl-P form was also higher in SWC- and SWS-treated soils. Despite the similarities between SWS and SWC, SWS significantly had a lower maximum P sorption (<i>Q</i>_max) and higher equilibrium P concentration at zero net sorption (EPCO) probably related to the higher organic NaOH-P. Similarly, higher organic NaOH-P together with lower cation exchange capacity, aluminum, and calcium explained the lower <i>Q</i>_max in SWL. This suggests that increase in organic NaOH-P forms limits the soil potential to retain P. Overall, the SWL treatment presents a unique effect on changes in soil property and P chemistry that warrants further investigation.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20528","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71424136","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}

{"title":"Escherichia coli efflux from rangeland ecosystems in the southcentral Great Plains of the United States","authors":"Austin J. Phillippe,&nbsp;Kevin L. Wagner,&nbsp;Rodney E. Will,&nbsp;Chris B. Zou","doi":"10.1002/jeq2.20527","DOIUrl":"10.1002/jeq2.20527","url":null,"abstract":"<p>Bacterial contamination of surface water is a public health concern. To quantify the efflux of <i>Escherichia coli</i> into ephemeral and intermittent streams and assess its numbers in relation to secondary body contact standards, we monitored runoff and measured <i>E. coli</i> numbers from 10 experimental watersheds that differed in vegetation cover and cattle access in north-central Oklahoma. <i>Escherichia coli</i> numbers were not significantly different among the watersheds, with one exception; the grazed prairie watershed (GP1) had greater numbers compared to one ungrazed prairie watershed (UP2). Median <i>E. coli</i> numbers in runoff from ungrazed watersheds ranged from 260 to 1482 MPN/100 mL in comparison with grazed watersheds that ranged from 320 to 8878 MPN/100 mL. In the GP1 watershed, higher cattle stocking rates during pre- and post-calving (February–May) resulted in significantly greater bacterial numbers and event loading compared to periods with lower stocking rates. The lack of significance among watersheds is likely due to the grazed sites being rotationally (and lightly) grazed, data variability, and wildlife contributions. To address wildlife sources, we used camera trap data to assess the usage in the watersheds; however, the average number of animals in a 24-h period did not correlate with observed median <i>E. coli</i> numbers. Because of its impacts on <i>E. coli</i> numbers in water, grazing management (stocking rate, rotation, and timing) should be considered for improving water quality in streams and reservoirs.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20527","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71412479","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}

{"title":"Is it raining PFAS in France? An analysis of 52 PFAS at nanogram per liter levels in French rainwaters during autumn season","authors":"Margaux Berthou,&nbsp;Violaine Gérard,&nbsp;Matthieu Pélingre,&nbsp;Alexandra Bagard,&nbsp;Thibault Le Batteux,&nbsp;Guillaume Losfeld","doi":"10.1002/jeq2.20525","DOIUrl":"10.1002/jeq2.20525","url":null,"abstract":"<p>Per- and polyfluoroalkyl substances (PFAS) are of increasing concern due to their pervasive nature, high persistence, and their impacts on human health and the environment. Many studies have attempted to assess the presence of PFAS along the water cycle, but few have analyzed rainwater PFAS content and its contribution to water contamination. The present study aims to improve knowledge by providing the first analysis of PFAS rainwater samples from France. A total of 52 PFAS were analyzed at nanogram per liter levels in rainwater samples collected in 14 locations in France using a cutting-edge liquid chromatography-tandem mass spectrometry (LC/MS/MS) method for multiresidue determination. Depending on the quantity of rainwater collected, the PFAS concentrations were analyzed either by direct injection or after solid-phase extraction (SPE), allowing to quantify 20 PFAS with a limit of quantification (LOQ) ≤ 100 ng/L and 52 PFAS with a LOQ ≤ 1 ng/L, respectively. For the five locations for which the collected samples were analyzed by direct injection, no PFAS could be detected (i.e., their concentrations in the samples were below the LOQs of the method). The samples from four locations out of the nine analyzed by SPE-LC/MS/MS show results above the method's LOQs for up to 10 PFAS. Among the quantified PFAS, three compounds (perfluorononanoic acid, perfluoroundecanoic acid, and perfluorohexanoic acid) have been found to be of most significance. These results bring out the presence of PFAS in rainwater samples in France, highlighting the need for PFAS environmental surveillance and risk assessment and the necessity of continuous improvement of existing analysis methods.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54229310","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}

{"title":"Cover crop performance under a changing climate in continuous corn system over Nebraska","authors":"Girma Birru,&nbsp;Andualem Shiferaw,&nbsp;Tsegaye Tadesse,&nbsp;Brian Wardlow,&nbsp;Virginia L. Jin,&nbsp;Marty R. Schmer,&nbsp;Tala Awada,&nbsp;Tulsi Kharel,&nbsp;Javad Iqbal","doi":"10.1002/jeq2.20526","DOIUrl":"10.1002/jeq2.20526","url":null,"abstract":"<p>Fall-planted cover crop (CC) within a continuous corn (<i>Zea mays</i> L.) system offers potential agroecosystem benefits, including mitigating the impacts of increased temperature and variability in precipitation patterns. A long-term simulation using the Decision Support System for Agrotechnology Transfer model was made to assess the effects of cereal rye (<i>Secale cereale</i> L.) on no-till continuous corn yield and soil properties under historical (1991–2020) and projected climate (2041–2070) in eastern Nebraska. Local weather data during the historical period were used, while climate change projections were based on the Canadian Earth System Model 2 dynamically downscaled using the Canadian Centre for Climate Modelling and Analysis Regional Climate Model 4 under two representative concentration pathways (RCP), namely, RCP4.5 and RCP8.5. Simulations results indicated that CC impacts on corn yield were nonsignificant under historical and climate change conditions. Climate change created favorable conditions for CC growth, resulting in an increase in biomass. CC reduced N leaching under climate change scenarios compared to an average reduction of 60% (7 kg ha<i>⁻</i>¹) during the historical period. CC resulted in a 6% (27 mm) reduction in total water in soil profile (140 cm) and 22% (27 mm) reduction in plant available water compared to no cover crop during historical period. CC reduced cumulative seasonal surface runoff/soil evaporation and increased the rate of soil organic carbon buildup. This research provides valuable information on how changes in climate can impact the performance of cereal rye CC in continuous corn production and should be scaled to wider locations and CC species.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20526","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61563156","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}

{"title":"Carbon and nitrogen dynamics in agricultural soil after application of cattle manure and eastern redcedar wood chips","authors":"Agustin J. Olivo,&nbsp;Eric Henning,&nbsp;Linda Schott,&nbsp;Amy Millmier Schmidt","doi":"10.1002/jeq2.20524","DOIUrl":"10.1002/jeq2.20524","url":null,"abstract":"<p>Uncontrolled proliferation of eastern redcedar tree (<i>Juniperus virginiana</i>) in the Midwest United States requires new alternatives for utilization of waste wood, such as mulching, that promotes efficient tree management by landowners. Similarly, efficient use of manure from animal feeding operations in cropping systems can reduce negative environmental impacts and increase cropland productivity. The objectives of this study were to quantify the nitrogen (N) and carbon (C) decomposition rates, availability, and effects on soil chemical properties of eastern redcedar wood chips (WC), cattle manure (CM), and the combination of cattle manure and wood chips (MW). A 120-day incubation and a 12-month field experiment were conducted in Nebraska. In the incubation study, CM decomposed the fastest, followed by MW and WC. At the end of the experiment, WC induced N immobilization. In the field experiment, most decomposition for all amendments occurred during the period between May and August (spring/summer). Decomposition was most rapid for CM and WC with 44% and 55% organic-C loss by mass, respectively. Approximately, 40% of the organic N in CM mineralized during the 1-year field study. Wood chips induced N immobilization after 6 months for shallow soil layers compared to control (no amendment) but did not induce N immobilization when combined with manure. Changes in soil organic matter concentration due to amendment application were not observed at any stages of the field experiment, likely due to the length of the experiment. However, consecutive applications of comingled MW may provide benefits of C contribution to the soil without inducing N limitations.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20524","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41235831","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}

{"title":"Structural and compositional diversity of biosurfactants produced by a novel strain of Sporosarcina luteola ME44 from oil reservoir","authors":"Jia-Yi Li,&nbsp;Yi-Fan Liu,&nbsp;Lei Zhou,&nbsp;Hong-Ze Gang,&nbsp;Jin-Feng Liu,&nbsp;Gang-Zheng Sun,&nbsp;Wei-Dong Wang,&nbsp;Shi-Zhong Yang,&nbsp;Bo-Zhong Mu","doi":"10.1002/jeq2.20523","DOIUrl":"10.1002/jeq2.20523","url":null,"abstract":"<p>The urealytically active microorganism <i>Sporosarcina luteola</i> induces the precipitation of metals, which has attracted attention in biomineralization, bioremediation, and industrial waste recycling. Herein, we report a novel biosurfactant-producing strain of <i>S. luteola</i> ME44 isolated from Chinese Oilfield. The structure, composition, and surface activity of the biosurfactants produced by <i>S. luteola</i> ME44 were investigated by using a combination of the high-performance liquid chromatography, time-of-flight mass spectrometry, and surface tensiometer. The biosurfactant extracted by strain ME44 was identified as surfactin with five variants and the yield was 1010 ± 60 mg⋅L⁻¹. This is the first report on the structural composition and surface activity of biosurfactants isolated from the <i>S. luteola</i>. It extended our knowledge about the role of the species <i>S. luteola</i> in the ecosystem of extreme natural environments such as oil reservoir. In addition, <i>S. luteola</i> ME44 showed bioprecipitation properties for metal ions Cd(II), Cu(II), Zn(II), and Ag(I), which indicated the application potential of <i>S. luteola</i> in the field of bioremediation.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41202885","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}

{"title":"Quantifying the spatiotemporal variability of nitrate in irrigation water across the Wisconsin Central Sands","authors":"Tracy A. Campbell,&nbsp;Kevin C. Masarik,&nbsp;Emily Marrs Heineman,&nbsp;Christopher J. Kucharik","doi":"10.1002/jeq2.20521","DOIUrl":"10.1002/jeq2.20521","url":null,"abstract":"<p>The Wisconsin Central Sands is home to large scale vegetable production on sandy soils and managed with frequent irrigation, fertigation, and widespread nitrogen fertilizer application, all of which make the region highly susceptible to nitrate loss to groundwater. While the groundwater is used as the primary source of drinking water for many communities and rural residences across the region, it is also used for irrigation. Considering the high levels of nitrate found in the groundwater, it has been proposed that growers more accurately account for the nitrate in their irrigation water as part of nitrogen management plans. Our objectives were to 1) determine the magnitude of nitrate in irrigation water, 2) quantify the spatiotemporal variability of nitrate, and 3) determine key predictors of nitrate concentration in the region. We sampled irrigation water from 38 fields across six farms from 2018 to 2020. Across the 3 years of our study, nitrate concentration varied more across space than time. On average, our samples were tested at 19.0 mg L⁻¹ nitrate-nitrogen, or nearly two times the U.S. Environmental Protection Agency (EPA) threshold for safe drinking water, equivalent to 48.1 kg ha⁻¹ of applied nitrate-nitrogen with 25.4 cm (or 10 in.) of irrigation. To better understand the spatiotemporal variability in nitrate levels, week of sampling, year, well depth, well casing, and nitrogen application rate were analyzed for their role as predictor variables. Based on our linear mixed effects model, nitrogen application rate was the greatest predictor of the nitrate concentration of irrigation water (<i>p</i> &lt; 0.05).</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://acsess.onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20521","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41179068","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}

{"title":"Field-scale evaluation of struvite phosphorus and nitrogen leaching relative to monoammonium phosphate","authors":"Patricia Leon,&nbsp;Yuhei Nakayama,&nbsp;Andrew J. Margenot","doi":"10.1002/jeq2.20522","DOIUrl":"10.1002/jeq2.20522","url":null,"abstract":"<p>Struvite (MgNH₄PO₄·6H₂O) is a wastewater-derived phosphorus (P) fertilizer with potential to reduce P as well as nitrogen (N) losses due to its low water solubility. To test hypothesized lower P and N losses from struvite relative to monoammonium phosphate (MAP), field experiments with a randomized-complete block design were conducted in central (Urbana) Illinois on an Endoaquoll-Argiudoll complex and in southern (Ewing) Illinois on a Fragiudalf-Hapludalf complex. Fertilizer was broadcast applied in the fall prior to spring planting of soybean (<i>Glycine max</i> L.) at a maintenance rate of 29.5 kg P ha⁻¹ (Urbana) and 22.0 kg P ha⁻¹ (Ewing). In the spring, soil extractable N and Mehlich 3-P at 0- to 15-cm and 15- to 35-cm depths were determined, and leached N and P were estimated using fall-installed ion-exchangeable resin (IER) lysimeters. At Urbana, soil extractable nitrate-N was higher under MAP than struvite at 0- to 15-cm depth. At Ewing, soil Mehlich 3-P under struvite was lower than MAP at both depths. At Urbana, leached P was 10-fold lower, and leached N was twofold lower under struvite than MAP. Soybean yields were similar between MAP and struvite at Urbana (4.1–4.3 Mg ha⁻¹) and Ewing (3.2–3.5 Mg ha⁻¹), but at Ewing yields were 23% higher under struvite compared to the P-unfertilized control. Off-season yield-scaled P and N losses under struvite were lower than MAP by 51% at Urbana and by 10% at Ewing. Our results support the hypothesized potential of struvite to reduce nutrient losses while meeting crop P needs. Additionally, we identify disproportionally greater reductions in N leaching and yield-scaled N losses by substituting struvite for MAP in fall applications, indicating that struvite can offer greater relative benefits for N loss reduction than P loss reduction.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20522","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41179067","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}