Journal of environmental quality最新文献_第7页

The LTAR Grazing Land Common Experiment at the Great Basin 大盆地的 LTAR 牧场共同实验。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-10 DOI: 10.1002/jeq2.20617

Patrick E. Clark, Craig D. Woodruff, Andrew R. Hedrick, Stuart P. Hardegree, Gerald N. Flerchinger

{"title":"The LTAR Grazing Land Common Experiment at the Great Basin","authors":"Patrick E. Clark, Craig D. Woodruff, Andrew R. Hedrick, Stuart P. Hardegree, Gerald N. Flerchinger","doi":"10.1002/jeq2.20617","DOIUrl":"10.1002/jeq2.20617","url":null,"abstract":"The Long-Term Agroecosystem Research (LTAR) network, through its Common Experiment (CE) framework, contrasts prevailing and alternative agricultural practices for efficacy and sustainability within the indicator domains of environment, productivity, economics, and society. Invasive species, wildfire, and climate change are principal threats to Great Basin agroecosystems. Prescribed grazing may be an effective tool for restoring lands degraded by these disturbances. At the Great Basin (GB) LTAR site headquartered in Boise, ID, our contribution to the CE contrasts a prevailing (PRV), cattle grazing practice of fixed moderate stocking and duration with an alternative (ALT), prescribed grazing practice called high-intensity low-frequency (HILF) grazing where stocking and duration are tailored to suppress invasive annual grass competition with native or desirable plant species and thus promote recovery of rangelands degraded by annual grass invasion and recurrent wildfire. Preliminary results indicate cheatgrass density and fuel height have been reduced in ALT-treated paddocks compared to PRV paddocks. Since its inception in 2014, our GB CE has been a research co-production effort among ranchers, public land managers, and researchers. Future directions for this research will center on expanding the experiment to multiple study areas to better address the scope of the annual grass/wildfire problem. We expect this research will lead to effective and sustainable grazing practices for restoring >41 million hectares of degraded rangelands in the Great Basin and other areas of the western United States.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"861-868"},"PeriodicalIF":2.2,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141912898","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

Removal of nutrients from aquaculture wastewater using cattail (Typha spp.) constructed wetlands 利用香蒲（Typha spp.）建造的湿地去除水产养殖废水中的营养物质。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-10 DOI: 10.1002/jeq2.20608

Nicholas C. Blandford, Kenton McCorquodale-Bauer, Richard Grosshans, Bruce Hardy, Nazim Cicek, Vince Palace

{"title":"Removal of nutrients from aquaculture wastewater using cattail (Typha spp.) constructed wetlands","authors":"Nicholas C. Blandford, Kenton McCorquodale-Bauer, Richard Grosshans, Bruce Hardy, Nazim Cicek, Vince Palace","doi":"10.1002/jeq2.20608","DOIUrl":"10.1002/jeq2.20608","url":null,"abstract":"The aquaculture industry is among the fastest growing food production sectors in the world. Land-based aquaculture systems continue to increase in popularity as they offer the benefits of controlling diseases, managing water quality, and minimizing threats to wild populations of fish. However, these systems discharge wastewater high in N and P. The ability of cattail (Typha spp.) constructed wetlands (CWs) to remove N and P from aquaculture wastewater (AWW) was examined here. Cattail CWs were established in mesocosms and had a gradient of AWW applied weekly for a total of 5 weeks. Total N and P loadings ranged from 13.7 to 209.2 mg m−2 and 3.01 to 45.97 mg m−2 over 28 days, respectively. Additions of AWW did not cause elevations in total dissolved N, total ammonia N, or nitrite N in CW water; however, concentrations of nitrate N and P in CW water were related to nutrient loading conditions. Elevations in P persisted for 3–4 weeks among high nutrient loading treatments, providing an opportunity for eutrophic conditions to develop in CW systems. However, after 33 days of treatment, >95% total P concentration reduction was achieved in all mesocosms with final concentrations <0.05 mg L−1, equivalent to reference conditions. High-loading treatments achieved greater P load reduction (856.8–955.0 mg m−2 year−1) than low-loading and reference treatments (591.7–792.7 mg m−2 year−1). This study demonstrates the effectiveness of cattail CWs to remove nutrients during AWW treatment and highlights the potential for end-of-season use in northern climates, providing insights regarding the operational timeline of such systems.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"767-775"},"PeriodicalIF":2.2,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20608","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141912897","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

Variations in fluorescence properties of humic acids from calcareous soils amended with different swine manures in a long-term soil experiment 在一项长期土壤实验中，用不同猪粪改良过的石灰性土壤中腐殖酸的荧光特性的变化。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-10 DOI: 10.1002/jeq2.20619

Ibrahim Mohammed, Busayo Kudaolu, Yuki Audette, James G. Longstaffe

{"title":"Variations in fluorescence properties of humic acids from calcareous soils amended with different swine manures in a long-term soil experiment","authors":"Ibrahim Mohammed, Busayo Kudaolu, Yuki Audette, James G. Longstaffe","doi":"10.1002/jeq2.20619","DOIUrl":"10.1002/jeq2.20619","url":null,"abstract":"Molecular properties of soil humic acid (HA) can play an important role in the mechanisms regulating plant nutrient availability. This study explores how the structure of HA is altered by long-term treatment with different forms of swine manure and how these changes may influence nutrient availability. Liquid swine manure (LSM), solid swine manure (SSM), and swine manure compost (SMC) were applied to a calcareous soil over 17 years in a long-term soil fertility study. HA was extracted from site soil samples and analyzed using fluorescence spectroscopic techniques, including a Cu2+ quenching experiment, in order to assess differences in the structure and functionality of the soil organic matter (SOM) resulting from these different treatments. Emission spectra of the SSM-HA and SMC-HA are similar, while the LSM-HA is distinct. Procedures such as parallel factor analysis (PARAFAC) decomposition of emission–excitation matrices showed that structures in the SSM-HA and SMC-HA samples have lower complexity, whereas the structures of LSM-HA are of higher complexity. Interactions with Cu2+ at different pH levels indicate that the LSM-HA shows more dynamic conformational changes as well as stronger interactions and higher quenching efficiency compared to the other treatments. Conversely, SMC-HA demonstrates relatively stable binding constant (Ka) values across different pH levels. The binding constants and quenching efficiency of SSM-HA are significantly affected by changes in pH. This study shows distinct structural characteristics of HA formed under different manure management systems and provides valuable insights into how these variations may impact nutrient dynamics in soils.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"697-710"},"PeriodicalIF":2.2,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20619","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141912899","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

The LTAR Cropland Common Experiment at Central Mississippi River Basin 密西西比河流域中部的 LTAR 耕地共同试验。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-07 DOI: 10.1002/jeq2.20614

Lori J. Abendroth, Adam P. Schreiner-McGraw, Curtis J. Ransom, Claire Baffaut, Kenneth A. Sudduth, Kristen S. Veum

引用次数: 0

Regional quality analysis of the hydrological environment with an improved random forest model based on the chimpanzee algorithm 利用基于黑猩猩算法的改进型随机森林模型对水文环境进行区域质量分析。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-05 DOI: 10.1002/jeq2.20609

Xuesong Li, Liangliang Zhang, Xian Chen, Yifan Yang, Xiaoyun Mao

{"title":"Regional quality analysis of the hydrological environment with an improved random forest model based on the chimpanzee algorithm","authors":"Xuesong Li, Liangliang Zhang, Xian Chen, Yifan Yang, Xiaoyun Mao","doi":"10.1002/jeq2.20609","DOIUrl":"10.1002/jeq2.20609","url":null,"abstract":"High-precision evaluations of water environment quality are highly important for improving the accuracy of early warning systems of regional water pollution risk and improving the regional water environment. This paper employs the chimp optimization algorithm (ChOA) to enhance the traditional random forest model, resulting in the chimp optimization algorithm-random forest (ChOA-RF) water quality assessment model for evaluating the Jiansanjiang area in Heilongjiang Province, China. The results show that the overall water environment in Jiansanjiang has the following characteristics: “The water quality of farms in the northwest is poor, and the quality of groundwater is better than that of surface water.” Total nitrogen (TN) and total phosphorus (TP) in surface water and ammonium nitrogen (NH3-N), ferrum (Fe), and manganese (Mn) in groundwater are the main pollutants. The TP and TN in surface water and the NH3-N in groundwater exceeded the relevant standards, likely due to the excessive application of chemical fertilizers, especially nitrogen fertilizers. Additionally, Fe and Mn are harmful native substances. According to these findings, targeted improvement strategies, such as reducing nitrogen fertilizer application, plugging well, and increasing the surface water utilization rate, are proposed. Moreover, the ChOA-RF model is compared with the traditional empirical value model and the particle swarm optimization-random forest (PSO-RF) model. The results show that the ChOA-RF model can effectively reduce the root mean square error and mean absolute percentage error and improve the coefficient of determination. The running time and convergence ability are also better than those of the PSO-RF model, which is a more accurate and efficient machine learning model. The model can be used not only for high-precision evaluation of regional water environment quality but also for other machine learning fields.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"604-617"},"PeriodicalIF":2.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141893575","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

Strategic tillage of no-till decreased surface and subsurface losses of dissolved phosphorus 战略性免耕减少了地表和地下溶解磷的损失。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-05 DOI: 10.1002/jeq2.20612

Risto Uusitalo, Riitta Lemola, Mira Šuštar, Mika Kurkilahti, Janne Kaseva, Eila Turtola

{"title":"Strategic tillage of no-till decreased surface and subsurface losses of dissolved phosphorus","authors":"Risto Uusitalo, Riitta Lemola, Mira Šuštar, Mika Kurkilahti, Janne Kaseva, Eila Turtola","doi":"10.1002/jeq2.20612","DOIUrl":"10.1002/jeq2.20612","url":null,"abstract":"Enrichment of soluble P on the surface layer of long-term no-till (NT) soils, and consequent increase in dissolved P losses, is a concern for which occasional plowing has been suggested as a remedy. We measured the effect of such strategic tillage (ST) on surface and subsurface P losses from 0.5-ha field plots on clay soil for 4 years. Two NT plots had discharged threefold dissolved molybdate-reactive P (DRP) losses compared to annually plowed soil conventional tillage (CT). ST by plowing to 20-cm depth was applied on one of the NT plots, whereas the other remained under NT. ST done in July was sown with canola (Brassica napus ssp. oleifera) to establish plant cover before winter. Summed 4-year DRP loss from ST treatment was 60% lower compared to NT (0.78 vs. 1.96 kg ha−1), accompanied with 11% higher particulate P (PP) loss (4.39 vs. 3.97 kg ha−1). CT plots produced slightly lower DRP losses (0.53–0.76 kg ha−1) than ST, but higher PP losses (6.02–7.96 kg ha−1). Bioavailable P (BAP) losses from ST were lower than from the other treatments if >7% of PP turns bioavailable. After ST, soil P stratification first vanished, but started to develop again when NT was resumed. Occasional tillage of NT soils mitigates DRP losses over several years, and it was at the study site the preferred mitigation option in reducing BAP losses.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"657-668"},"PeriodicalIF":2.2,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20612","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141893576","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

Soil fertilization with microalgae biomass from municipal wastewater treatment causes no additional leaching of dissolved macronutrients and trace elements in a column experiment 在柱状实验中，用城市污水处理产生的微藻生物质进行土壤施肥不会导致溶解性宏量营养元素和微量元素的额外沥滤。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-02 DOI: 10.1002/jeq2.20613

Harald Weigand, Hermann Velten, Rolf-Alexander Düring, Peter Chifflard, Marcus Rohnke, Timo Weintraut, Steffen Heusch, Ulf Theilen

{"title":"Soil fertilization with microalgae biomass from municipal wastewater treatment causes no additional leaching of dissolved macronutrients and trace elements in a column experiment","authors":"Harald Weigand, Hermann Velten, Rolf-Alexander Düring, Peter Chifflard, Marcus Rohnke, Timo Weintraut, Steffen Heusch, Ulf Theilen","doi":"10.1002/jeq2.20613","DOIUrl":"10.1002/jeq2.20613","url":null,"abstract":"Microalgae are a promising bio-fertilizer that can be cultivated in municipal wastewater, where the organisms perform water purification by incorporation of nutrients and contaminants. Before bio-fertilization with wastewater-grown microalgae can be put into practice, its impact on the leaching of macronutrients and trace elements needs to be evaluated. Here, we studied the leaching behavior of a microalgae-fertilized soil against a control in column percolation setup. Microalgae were grown in real municipal wastewater supplemented with bromide for the analysis of within-cell Br− accumulation by time-of-flight secondary ion mass spectrometry. Dry biomass (45.0 g N kg−1 and 28.9 g P kg−1) was added to the topmost layer of the fertilized column at a level of 3 g biomass kg−1 on a whole soil basis. Column irrigation was equivalent to 3 years of precipitation in central Germany. The leaching of macronutrients and trace elements from the fertilized and control columns was largely identical. Except for P, depth profiles confirmed very low vertical translocation within the soil. This is held for total element contents as well as for operationally defined pools, suggesting that microalgae cultivated in municipal wastewater provide a slow-release fertilizer largely resistant to leaching. Mass spectrometric imaging gave clear evidence for bromide uptake by the microalgae, and pure cultures of the genus Scenedesmus showed that it was preferentially located in the cell membrane. Therefore, bromide could potentially be employed as a mineralization tracer in future studies on the use of microalgae as a bio-fertilizer.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"618-628"},"PeriodicalIF":2.2,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20613","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141874990","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

Nascently generated microplastics in freshwater stream are colonized by bacterial communities from stream and riparian sources 淡水溪流中新产生的微塑料会被来自溪流和河岸的细菌群落定殖。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-01 DOI: 10.1002/jeq2.20602

M. Rumman Hossain, Andrew C. Eagar, Christopher B. Blackwood, Laura G. Leff

{"title":"Nascently generated microplastics in freshwater stream are colonized by bacterial communities from stream and riparian sources","authors":"M. Rumman Hossain, Andrew C. Eagar, Christopher B. Blackwood, Laura G. Leff","doi":"10.1002/jeq2.20602","DOIUrl":"10.1002/jeq2.20602","url":null,"abstract":"The purpose of this study was to examine bacterial colonization of different types of microplastics through time in a freshwater ecosystem. Microplastics are persistent pollutants in aquatic ecosystems. Bacteria readily colonize microplastic surfaces and may contribute to their degradation, but the taxa involved, and their degradative abilities, differ based on factors such as microplastic chemistry, plastic age, and specific ecosystem types. Four different common types of newly manufactured microplastics, high-density polyethylene, low-density polyethylene, polypropylene, and polystyrene, were incubated for 7 weeks in a freshwater stream and sampled. Sample collection was timed to examine the development of early and late bacterial biofilm communities. Microplastics were analyzed for changes to buoyancy, weight, contact angles (an indicator of surface roughness), bacterial community composition, and the number of bacterial cells. Time was the only significant contributing factor in the development of bacterial biofilm communities on microplastic disks over the 7-week study. Notably, the Comamonadaceae were abundant early in the study and decreased in abundance with time, while the Methylococcaceae demonstrated the opposite trend. Different physicochemical properties among the various types of microplastics had only a minor effect on bacterial community compositions of biofilms growing on the microplastics. Additionally, the surfaces of all microplastic disks became rougher over time in the stream. Collectively, our results show that microplastic surfaces undergo surface modification and community succession as time progresses, regardless of microplastic type, in a freshwater stream ecosystem.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 5","pages":"577-588"},"PeriodicalIF":2.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20602","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859983","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

The LTAR Grazing Land Common Experiment at Northern Plains 北部平原的 LTAR 牧场共同实验。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-08-01 DOI: 10.1002/jeq2.20604

David Toledo, John Hendrickson, Mark Liebig, Chantel Kobilansky, Andrew Carrlson, Scott Kronberg, Rachael Christensen, David Archer, David Branson, Tatyana Rand, Joshua Campbell, Cannayen Igathinathane

{"title":"The LTAR Grazing Land Common Experiment at Northern Plains","authors":"David Toledo, John Hendrickson, Mark Liebig, Chantel Kobilansky, Andrew Carrlson, Scott Kronberg, Rachael Christensen, David Archer, David Branson, Tatyana Rand, Joshua Campbell, Cannayen Igathinathane","doi":"10.1002/jeq2.20604","DOIUrl":"10.1002/jeq2.20604","url":null,"abstract":"The USDA Long-Term Agroecosystem Research (LTAR) network aims to enhance sustainable agricultural management practices through a coordinated, cross-site common experiment involving 18 locations across the United States. The objective of this paper is to provide an overview of the LTAR Grazing Land Common Experiment at the Northern Plains (NP) site, where an experiment was initiated in 2019 to answer producers' and researchers' questions about whether the tactical application of fire or grazing can reduce the dominance of invasive Kentucky bluegrass in northern Great Plains ecosystems. As part of the LTAR common experiment, we contrast a prevailing practice (season-long grazing at moderate stocking rate) with four alternative practices at a half-hectare plot scale: (1) mob grazing by cattle, (2) multi-species grazing (mob grazing by cattle, with goats foraging at key times of the year), (3) prescribed fire, and (4) prescribed fire followed by cattle grazing. A stakeholder group is engaged in the co-production process to determine alternative practices and how to apply them. Every 5 years, the treatment with the best overall outcomes is applied at a field scale (15 ha), resulting in a core treatment contrast of prevailing versus alternative grazing management systems. This experiment aims to develop alternative agroecological practices that optimize current and future economic and ecosystem benefits.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"921-929"},"PeriodicalIF":2.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.20604","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859986","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

The LTAR Cropland Common Experiment in the Upper Chesapeake Bay 切萨皮克湾上游的 LTAR 耕地共同实验。

IF 2.2 4区环境科学与生态学

Journal of environmental quality Pub Date : 2024-07-31 DOI: 10.1002/jeq2.20606

Curtis J. Dell, H. D. Karsten, C. A. M. Laboski, Thomas S. Adams, Sarah C. Goslee, Paul R. Adler

{"title":"The LTAR Cropland Common Experiment in the Upper Chesapeake Bay","authors":"Curtis J. Dell, H. D. Karsten, C. A. M. Laboski, Thomas S. Adams, Sarah C. Goslee, Paul R. Adler","doi":"10.1002/jeq2.20606","DOIUrl":"10.1002/jeq2.20606","url":null,"abstract":"Dairy production is a key agricultural enterprise in the Upper Chesapeake Bay (UCB) basin, where phosphorous (P) and nitrogen (N) loading contribute to eutrophication. Import of forages and grains and application of mineral fertilizers contribute to nutrient imbalances in the basin. The UCB Long-Term Agroecosystem Research Cropland Common Experiment aims to evaluate diverse crop rotations that minimize the need for imported feed, maximize year-round living cover, and reduce nutrient losses. UCB's plot-scale experiment was established in 2018, incorporating an ongoing cropping system study that was established by the Pennsylvania State University in 2010. An alternative dairy cropping rotation (including silage and grain corn [Zea mayes L.], alfalfa [Medicago sativa L.]/orchardgrass [Dactylis glomerata L.] mix, winter rye silage [Secale cereale L.], and sorghum-sudangrass [Sorghum × drummondii (Steud.) Millsp. & Chas]) that employed manure injection, integrated pest management, and less frequent manure application was compared to a prevailing, conventionally managed silage corn–alfalfa rotation with higher manure application rates. A field-scale experiment was established in 2019 to monitor alternative production practices (manure injection and avoidance of neonicotinoid seed treatment) and prevailing practices in three fields on a commercial dairy farm. Findings suggest that crop rotation diversification, manure injection, and integrated pest management have the potential to increase the economic and environmental sustainability of dairy cropping systems, but long-term evaluation is needed for confirmation.","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"53 6","pages":"823-831"},"PeriodicalIF":2.2,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859985","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