Article
Environmental Sciences
Donald M. Waller, Andrew G. Meyer, Zach Raff, Steven I. Apfelbaum
Summary: The study demonstrates that agricultural practices and extreme precipitation events significantly impact total phosphorus concentrations and loads in the Sugar River, especially after CAFO expansions. Total P concentrations increase with stream discharge and proximity to dairy operations, peaking in early spring to mid-summer.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Zheqi Pan, Minpeng Hu, Hong Shen, Hao Wu, Jia Zhou, Kaibin Wu, Dingjiang Chen
Summary: Increasing evidence suggests that groundwater can contain high dissolved phosphorus concentrations, contributing to potential pollution of surface waters. This study quantified contributions from different sources to riverine phosphorus pollution in an agricultural watershed in eastern China. The study found that groundwater could be a significant source of phosphorus pollution to rivers, emphasizing the importance of controlling groundwater pollution from agricultural lands.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Agronomy
Marcos Navarro, Lucas L. Alonso, Alberto L. Capparelli, Damian J. G. Marino
Summary: This study demonstrates the combined release of pollutants from multiple origins, showcasing the impact of poultry litter on soil pollution. Strategies for reducing animal wastes and their antibiotic content are crucial for water and soil conservation in circular economy processes.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Environmental Sciences
Anna Muntwyler, Panos Panagos, Stephan Pfister, Emanuele Lugato
Summary: This study predicts the phosphorus situation in Europe using a model and analyzes the impact of agricultural management on the phosphorus cycle. The results can help identify areas with phosphorus surplus or deficiency and provide guidance for the development of agricultural management policies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Maeva Marimoutou, Nicolas Gruyer, Roxanne Maranger, Georges Theriault, Isabelle Laurion
Summary: To meet the demand of a growing population, agriculture intensifies and leads to increased use of fertilizers and pesticides, which can disrupt water quality and impact aquatic life. This study evaluates the efficiency of an agricultural retention pond in reducing the supply of nutrients, pesticides, and suspended solids to a tributary of Lake St. Pierre. The study finds that the removal of pesticides varied, while the removal of suspended solids, phosphorus, and nitrogen was relatively high. However, the retention pond was not consistently effective in removing toxicity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Steven J. Hall, Carlos G. Tenesaca, Nathaniel C. Lawrence, David I. S. Green, Matthew J. Helmers, William G. Crumpton, Emily A. Heaton, Andy VanLoocke
Summary: Much of the US Corn Belt has been drained with subsurface tile to improve crop production, yet poorly drained depressions often still flood intermittently, suppressing crop growth. Leaching of nitrogen (N) and P was greater in depressions than in uplands for most transects and years. Cropped depressions may be disproportionate sources of N and P to downstream waters despite their generally poor drainage characteristics, and targeted management with cover crops or perennials might partially mitigate these impacts for N, but not necessarily for P.
JOURNAL OF ENVIRONMENTAL QUALITY
(2023)
Article
Environmental Sciences
Mark J. Butler, Brian C. Yellen, Oluyinka Oyewumi, William Ouimet, Justin B. Richardson
Summary: Understanding the accumulation and transport of nutrient and pollutant elements (NPEs) in the Thames River watershed, Connecticut, is crucial for protecting water resources and aquatic ecosystems. This study found that arsenic concentrations in soil and sediments exceeded quality targets, but not river water. Riparian soil and land cover were not strong predictors of NPE concentrations in sediments and river water. Dissolved export of NPEs was greater than sediment export for most elements. Watersheds with higher farmland had higher phosphorus concentrations in river water. Overall, NPE export has decreased but remains above baseline throughout the Thames River watershed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Brittany R. Hanrahan, Jennifer L. Tank, Shannon L. Speir, Matt T. Trentman, Sheila F. Christopher, Ursula H. Mahl, Todd Royer
Summary: Excess phosphorus from agriculture leads to harmful algal blooms, and planting cover crops in tile-drained cropland can reduce soluble reactive phosphorus (SRP) loss in tiles, especially during critical export periods from January to June. At the watershed scale, cover crops can slow cumulative SRP losses and reduce SRP export during extreme events, although the variability in SRP yield complicates the detection of significant effects of changing land cover on SRP export downstream.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Muhammad Mohiuddin, Zahid Hussain, Asim Abbasi, Jawad Ali, Muhammad Irshad, Muhammad Atiq Ur Rehman Tariq, Anum Intisar, Aiman Hina, Qamar Uz Zaman, Anne Wai Man Ng
Summary: Iodine loss is a common issue in hilly regions, impacting the bioavailability of iodine in fruits and vegetables. This study found that sawdust as an organic amendment can effectively reduce iodine content in surface runoff and improve iodine retention capacity in soil.
Article
Environmental Studies
Yogesh P. Khare, Rajendra Paudel, Ruscena Wiederholt, Anteneh Z. Abiy, Thomas Van Lent, Stephen E. Davis, Younggu Her
Summary: The research indicates that legacy P, inorganic fertilizers, and other sources are important phosphorus contributors in the LOW, while improved pastures, dairies, citrus, and field crops are major TP load contributors. The study underscores the need for accurate spatial mapping of legacy P and its incorporation into modeling efforts for watersheds with legacy P issues.
Article
Engineering, Environmental
Tian Guo, Laura T. Johnson, Greg A. LaBarge, Chad J. Penn, Richard P. Stumpf, David B. Baker, Gang Shao
Summary: Extreme precipitation in 2019 led to record high unplanted agricultural fields in the U.S. and MRW, impacting the severity of HAB in Lake Erie. The 29% reduction in DRP load in MRW resulted in a less severe HAB than predicted, highlighting the importance of management changes in influencing watershed P loading.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Jinlin Li, Yuhai Bao, Jie Wei, Xiubin He, Qiang Tang, Shengjun Wu, Ping Huang, Maohua Ma, Ping Zhou, Mingfeng Wang
Summary: This study investigated the scaling properties of purple soil particle-size distribution (PSD) using multifractal characterization. The results revealed that the PSDs of purple soils exhibit multifractal behavior and vary among different land-use types. Forestland purple soil showed coarser granularity and more complex PSD compared to other land-use types. The study also found that the current land use has limited and complex effects on purple soil PSDs at a small watershed scale, and the legacy effect of historical land use plays a role in the evolution of purple soil PSDs.
Article
Engineering, Environmental
Yun-Ya Yang, Malak M. Tfaily, Jared L. Wilmoth, Gurpal S. Toor
Summary: This study used FT-ICR-MS to investigate the molecular characteristics of dissolved organic nitrogen (DON) and phosphorus (DOP) in agricultural runoff and surface waters. The findings suggest that agricultural runoff contains a greater diversity of DON species, while upstream waters exhibit higher levels of more-bioavailable compounds. This suggests that photochemical and/or microbial processes may alter the characteristics of DON and DOP compounds.
Article
Environmental Sciences
Junwei Jin, Yunying Fang, Shuang He, Yu Liu, Chunlong Liu, Fayong Li, Sangar Khan, Kamel Mohamed Eltohamy, Boyi Liu, Xinqiang Liang
Summary: This study investigated the effects of three different fertilizers on soil phosphorus (P) species through sequential chemical extraction (SCE) and 31P NMR techniques, as well as the degree of P saturation (DPS) in paddy and vegetable fields. The results showed that biochar-blended organic fertilizer and organic fertilizer increased the total and available P contents in the soil, but decreased the DPS values. However, chemical fertilizer had a smaller impact on soil P species. Biochar-blended organic fertilizer improved P availability and decreased P loss risk through the alteration of soil P species.
Article
Agriculture, Multidisciplinary
Xiaolei Sun, Roland Bol, Erwin Klumpp, Meng Li
Summary: This study found that organic phosphorus has a significant risk of leaching in agricultural soils and should be included in the risk assessment of total phosphorus leaching. Controlling the excessive accumulation of AP(T) in both P-O and P-I fractions in agricultural land is crucial for reducing phosphorus leaching.
CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE
(2022)
Article
Agricultural Engineering
Yifan Bai, Junzhen Yu, Shuqin Yang, Jifeng Ning
Summary: A real-time recognition algorithm (Improved YOLO) is proposed in this paper for accurately identifying small, similar-colored, and overlapping strawberry seedling flowers and fruits. The experimental results show that the algorithm achieves high precision, recall, and average precision, and meets the real-time detection requirements, providing effective support for the automated management of strawberry seedling flower and fruit thinning.
BIOSYSTEMS ENGINEERING
(2024)