July 29-350-James Burke
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The document discusses a study of soil phosphorus levels in three fields - Fields 1, 5a, and 12 - located near the Buffalo National River in Arkansas. Soil samples were taken from 2014 to 2018 and analyzed for soil test phosphorus. All three fields showed a significant increase in soil test P from 2016 to 2018, attributed to periodic applications of swine slurry in Fields 1 and 12 and cattle grazing/deposition across all fields. Producers agreed to management changes to help ensure water quality in the river is protected.
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This document discusses soil phosphorus levels in urban and agricultural areas of Kentucky and the relationship to water quality issues. It finds that soil test phosphorus levels exceeding 60 mg/kg, which is the high risk threshold, are much more common in urban lawn and garden soils (34%) compared to agricultural soils (79%). Excess phosphorus from urban and agricultural runoff can lead to algal blooms and eutrophication in waterways. The document examines soil test data and regulations in other states to address how excess phosphorus fertilization could be better managed to protect water quality.
Senimar for link
Ashleigh Hammac conducted a study to quantify the effectiveness of agricultural conservation practices on water quality in the Jordan Lake watershed of North Carolina. She monitored two paired watersheds - one pasture watershed that received livestock exclusion fencing and nutrient management in 2011, and one control pasture watershed. Preliminary results showed decreases in the treatment pasture watershed for total suspended solids, total phosphorus, and total Kjeldahl nitrogen loads after implementation of conservation practices, but an increase in nitrate-nitrite nitrogen loads. Overall the study aims to determine if practices like livestock exclusion and nutrient management can effectively reduce nutrient pollution from agricultural lands.
Fermanich - Lower Fox River - Green Bay TMDL
This document summarizes efforts to address nutrient pollution in the Lower Fox River and Green Bay through targeted monitoring, modeling, and alternative management strategies. Monitoring shows phosphorus and sediment loads exceeding targets, with most export occurring during high runoff events. Agricultural sources are significant contributors. Models indicate that widespread adoption of practices like cover crops, reduced tillage, and targeting high phosphorus areas could reduce loads by over 40%, but current approaches may not achieve water quality goals. Improving soil health and expanding successful pilot projects offer promise, but significant challenges remain.
Sugarcane yield and plant nutrient response to sulfur amended everglades hist...
Sugarcane yield and plant nutrient response to sulfur amended everglades hist...Avjinder (Avi) Kaler
This study evaluated the effects of elemental sulfur application rates and calcium carbonate levels on sugarcane yield, plant nutrients, and soil pH in Everglades Histosols. Four sulfur rates and three calcium carbonate levels were tested in a factorial experiment. Leaf samples were taken twice during the growing season and analyzed for nutrient concentrations. At harvest, sugarcane yield components were measured. Results showed that sulfur amendment and calcium carbonate levels had limited effects on yield, leaf nutrients, and soil pH. Most leaf nutrients were within optimum ranges except for nitrogen, phosphorus, iron, and manganese. Soil pH, phosphorus, and manganese concentrations were important predictors of sugarcane yield.Signpost Seminar: Water quality - national problems, local solutions
Signpost Seminar: Water quality - national problems, local solutionsEnvironmental Protection Agency, Ireland
This document discusses water quality issues in Ireland and solutions to address them. National water quality monitoring data shows 47% of rivers and 62% of estuaries are in unsatisfactory condition. The two most widespread problems are excess nutrients (nitrogen and phosphorus), with phosphorus and sediment issues impacting 60% of waters needing measures. Maps have been created to identify critical source areas for phosphorus and nitrogen losses from agriculture to target remediation efforts. Measures proposed include riparian buffers, wetlands, and nutrient management plans to reduce nitrogen and phosphorus at their sources and intercept transport pathways.August 31 - 0416 - Will Osterholz
This document summarizes a study that used a weighted regression model to quantify the contributions of new and old phosphorus sources to subsurface tile drainage losses from agricultural fields in Ohio. The model found that old phosphorus, which has accumulated from historical applications, dominated tile drainage phosphorus losses, accounting for over 80% of losses on average. New phosphorus contributions from recent applications accounted for less than 10% of losses on average. The study provides insights into managing phosphorus losses and implications for mitigation strategies focused on new versus old phosphorus sources.
July 30-210-Ann Marie Fortuna
This document summarizes a study assessing the impacts of land management practices on soil and water quality parameters using data from the Water Resources and Erosion Watersheds Experiment research site. The study developed a web-based data system to analyze climate, soil, management, and other data from the site. Principal component analysis of soil properties at different depths found differences related to landscape position and land use, with tallgrass prairie soils generally having higher organic carbon and nitrogen than cropped soils. Future work will use near infrared spectroscopy to efficiently measure soil quality indicators.
Macedo et al (2015)-Irrigation Groundwater Quality for Agricultural Use
The document summarizes a study on assessing irrigation groundwater quality for agricultural use in Ekxang Village, Lao PDR. Daily field tests were conducted to measure parameters like EC, TDS, pH, and temperature of the groundwater. Laboratory analyses found that mean EC and SAR were below thresholds for crop tolerance, indicating groundwater quality was suitable for agriculture with low salinity and sodicity risks. While groundwater irrigation could help smallholders adapt to climate change, constant monitoring of quality is needed to sustainably increase crop yields and soil health.
Science tools to help get the right measure in the right place
Science tools to help get the right measure in the right placeEnvironmental Protection Agency, Ireland
This presentation was given by Dr Eva Mockler, EPA Catchment Science and Management Unit, at the 2020 annual meeting of the Irish Freshwater Sciences Association.
It covers 4 tools:
1.Pollutant Impact Potential (PIP) Maps
2.SANICOSE Model for septic tanks
3.Source Load Apportionment Model
4.Morphological Quality Index for Ireland (MQI Ireland)
See www.freshwaterscience.ie and www.catchments.ie for more information.Steve Davis - Western Lake Erie Basin Nutrient Reductions: Goals And Programs...
Western Lake Erie Basin Nutrient Reductions: Goals And Programs To Get There - Steve Davis, from the 2018 Conservation Tillage and Technology Conference, March 6 - 7, Ada, OH, USA.
More presentations at https://www.youtube.com/channel/UCZBwPfKdlk4SB63zZy16kyA
Impact of Tile Drainage on Manured Land
The summary provides an overview of the key points discussed in the document:
1) The document discusses tile drainage and its potential impacts on water quality, specifically looking at whether liquid manure poses higher risks than synthetic fertilizers and how those risks can be minimized.
2) It outlines the key concepts around soil physics, tile drainage, and its effects on hydrology and water quality. Research shows tile drainage can reduce surface runoff and peak flows while having little impact on total annual flow.
3) The document analyzes nutrient leaching and finds that while tile drainage may increase nutrient transport to surface water, adopting best management practices like controlled drainage and nutrient management can help minimize these risks.
An ASABE Meeting Presentation
This document summarizes a study analyzing non-point source pollution in groundwater and streams in rural watersheds in Argentina. Groundwater samples were collected monthly from 2011-2013 from 19 observation wells located on agricultural fields in western Buenos Aires. Surface water samples were also collected daily from 2011-2013 from two watersheds in southeastern Buenos Aires. The samples were analyzed for nutrients like nitrogen and chemicals like herbicides and insecticides. Preliminary results found that over 50% of groundwater samples exceeded the 10 mg/L nitrate standard, mostly after heavy rainfall in 2012. Nitrate levels in streamflow averaged 5 ppm. The study aims to use the data to validate hydrological models for assessing non-point
Greenhouse gas trade-offs and N cycling in low-disturbance soils with long te...
Greenhouse gas trade-offs and N cycling in low-disturbance soils with long te...National Institute of Food and Agriculture
Objectives
- Assess types and densities of NA bacteria in diverse manures and manured soils
- Identify physico-chemical conditions that favor NA activity in soil and reduce N2O emissions
- Evaluate the impact of climate adaptive management practices (C addition, low disturbance) on GHG tradeoffs
GFW Partner Meeting 2017 - Parallel Discussions 3: Monitoring Beyond Forests
GFW Partner Meeting 2017 - Parallel Discussions 3: Monitoring Beyond ForestsWorld Resources Institute (WRI)
During last year’s partnership meeting, partners asked whether GFW should monitor land and forest values beyond trees. Since then, several GFW partners have been developing new approaches for monitoring land cover, land use, and values such as biodiversity, carbon, and water. Discussion topics include: what are needs for a monitoring system beyond forest area (e.g. for climate and biodiversity)? What role should GFW play in advancing new monitoring approaches? Which monitoring needs should we prioritize first?Measuring Success of Targeted BMP Implementation, and Getting Smarter about E...
Measuring Success of Targeted BMP Implementation, and Getting Smarter about E...National Institute of Food and Agriculture
This document summarizes a project that aimed to reduce sediment and nutrient export from watersheds in Kansas through targeted BMP implementation. The project measured the success of prior BMPs, targeted new ephemeral gully BMPs through mapping and modeling, educated producers and stakeholders, and expanded higher education opportunities. Key findings included identifying the most vulnerable crop fields, accurately locating and measuring ephemeral gullies, understanding phosphorus losses from different erosion processes, and increasing awareness of conservation practices. The project produced peer-reviewed publications, educated students, and established connections with local stakeholders.Irrigation Groundwater Quality for Agricultural Usability in Biochar and Fert...
1J. Macedo, 2M. Souvanhnachit, 3S. Rattanavong, 4B. Maokhamphiou, 4T. Sotoukee, 4P. Pavelic, 1M. Sarkis, 1T. Downs
1 Department of International Development, Community, and Environment, Clark University, Worcester, MA. U.S.A.
2 Department of Water Resources Engineering, National University of Laos, Vientiane, Lao PDR
3Independent Consultant, Washington DC, U.S.A.
4 International Water Management Institute Vientiane, Lao PDR.
Climate change risks pose significant challenge to smallholder irrigators who rely on rainfed agriculture for their livelihoods. Increased mean surface temperatures, varying rainfall, increasing evaporation and declining soil moistures all serve to impact productivity. Groundwater irrigation poses promising potential for agricultural productivity and the livelihoods of smallholders. Groundwater irrigation for agriculture use requires constant water quality monitoring. This excerpt is part of a field research, which assessed the impacts of biochar and fertilizer treatments on soil nutrients status, soil moisture, irrigation groundwater quality for agricultural use on the growth and yield of water spinach (Ipomoea aquatica). Groundwater quality was monitored to determine the levels of electric conductivity (EC) and total dissolved solids (TDS) determinants of salinity and sodium, calcium, and magnesium to calculate the sodium absorption ratio (SAR) to estimate sodicity. The methods involved daily field tests to measure EC, TDS, pH, temperature, and detailed chemical analysis. The results indicate that the mean EC (0.021 dS/m; SD = 0.010) is significantly less than the salinity tolerance threshold for water spinach (< 1.3 dS/m) and the mean TDS (12 ppm; SD = 4.5) with soil pH of 6.6. The results suggest that the irrigation groundwater quality was suitable for agriculture and the chance of salinity was significantly low. The computed SAR 0.174 was significantly lower than the normal level (<10) above which soil water permeability could result from sodic soil condition. The results demonstrate that groundwater use for agriculture could assist smallholders adapt to climate change risks, but judicious use requires constant monitoring of groundwater quality and resources to increase crop yield and improve soil health.
Key Words: Salinity, Sodicity, Groundwater Quality, Electric Conductivity, Total Dissolved Solids, Sodium Absorption Ratio
This PowerPoint only focuses on assessing irrigation groundwater quality in objective 4 and not the water use efficiency aspect/soil water savings. Here, we are only interested in the ability for biochar to reduce soil water salinity and sodicity.
Meeting goals and tracking quantified progress
1) The document discusses the Hypoxia Task Force (HTF), which was formed in the late 1990s to address hypoxia (low oxygen levels) in the Gulf of Mexico.
2) The HTF has set a goal of reducing the size of the hypoxic zone to less than 5,000 square kilometers by 2035 through reducing the amounts of nitrogen and phosphorus entering the Gulf from the Mississippi River Basin.
3) The document outlines the HTF's efforts to track progress towards this goal through measuring and modeling the size of the hypoxic zone, measuring nutrient loads from point and nonpoint sources, and monitoring water quality trends.
Phosphorus stratification and edge of-field phosphorus losses
This document summarizes research on phosphorus (P) stratification and edge-of-field P losses in the Western Lake Erie Basin. The research found that subsurface drainage accounted for most annual P loss, while surface runoff was a concern during high rainfall events. Less than half of field sites were meeting P loss targets. Soil test P levels influenced dissolved reactive P (DRP) in both surface runoff and tile drainage, but the influence varied based on flow amounts. P stratification did not predict average annual DRP losses. Greater stratification occurred on fields with surface nutrient application. Management practices that reduce both surface and subsurface P losses are needed.
Targeting conservation practices
1) The Pleasant Valley project targeted conservation practices to 10 farms within a watershed that were estimated to have the highest phosphorus loss to improve water quality.
2) Through practices like no-till farming, pasture improvements, and constructed structures, the targeted farms reduced their estimated phosphorus runoff by 3,300 pounds per year and soil erosion by 2,000 tons per year.
3) However, changes in untargeted areas of the watershed increased overall phosphorus loads, highlighting the challenges of continuously tracking conservation efforts across all land within a watershed.
Similar to July 29-350-James Burke (20)
Nutrient availability response to sulfur amendment in histosols having variab...
Nutrient availability response to sulfur amendment in histosols having variab...
Sugarcane yield and plant nutrient response to sulfur amended everglades hist...
Sugarcane yield and plant nutrient response to sulfur amended everglades hist...
Signpost Seminar: Water quality - national problems, local solutions
Signpost Seminar: Water quality - national problems, local solutions
Macedo et al (2015)-Irrigation Groundwater Quality for Agricultural Use
Macedo et al (2015)-Irrigation Groundwater Quality for Agricultural Use
Science tools to help get the right measure in the right place
Science tools to help get the right measure in the right place
Steve Davis - Western Lake Erie Basin Nutrient Reductions: Goals And Programs...
Steve Davis - Western Lake Erie Basin Nutrient Reductions: Goals And Programs...
Greenhouse gas trade-offs and N cycling in low-disturbance soils with long te...
Greenhouse gas trade-offs and N cycling in low-disturbance soils with long te...
GFW Partner Meeting 2017 - Parallel Discussions 3: Monitoring Beyond Forests
GFW Partner Meeting 2017 - Parallel Discussions 3: Monitoring Beyond Forests
Measuring Success of Targeted BMP Implementation, and Getting Smarter about E...
Measuring Success of Targeted BMP Implementation, and Getting Smarter about E...
Irrigation Groundwater Quality for Agricultural Usability in Biochar and Fert...
Irrigation Groundwater Quality for Agricultural Usability in Biochar and Fert...
Phosphorus stratification and edge of-field phosphorus losses
Phosphorus stratification and edge of-field phosphorus losses
More from Soil and Water Conservation Society
September 1 - 0939 - Catherine DeLong.pptx
This document summarizes a presentation about using process models to help build trust and understanding when implementing edge of field conservation practices. It discusses how process models can help various stakeholders like conservation professionals, landowners, cities, and contractors understand the time and resources required. It provides examples of process models created for constructed wetlands, saturated buffers, and bioreactors. The presentation discusses the goals of helping more stakeholders and expanding the models, as well as thanking collaborators on the project.
September 1 - 830 - Chris Hay
This document discusses the challenges of meeting nitrogen reduction goals in the Upper Mississippi River Basin. It notes that meeting the nutrient reduction goals will be a massive effort that requires a mix of practices across Iowa, Minnesota, and Illinois, including wetlands, drainage treatment, and stacked practices. However, there are also many challenges to implementing the necessary practices, including economics, human/social factors, delivery challenges, risk management, climate change, and the need for further research. The document emphasizes that understanding the large scale of the challenge is needed to make progress toward the nutrient reduction goals.
August 31 - 0239 - Yuchuan Fan
The document summarizes a meta-analysis that compared the nitrate removal performance of different substrates used in denitrifying bioreactors. It found that wood media had the highest nitrate removal rate (NRR) and percentage (NRE), followed by mulch media, nutshell-based media, and inorganic media. However, when considering cost-effectiveness, woodchip and corn cob were the most economical natural organic carbon substrates. Overall, the analysis suggests that mulch media is the optimal material for nitrate removal due to its low cost and potential to overcome deficiencies in other media types.
August 31 - 0216 - Babak Dialameh
The document summarizes an investigation into phosphorus transport dynamics in subsurface drainage using high-frequency measurements. Key findings include:
1) TRP concentration had a dynamic pattern that was strongly influenced by drainage discharge levels, highlighting the need for high-resolution sampling.
2) Event flows contributed 78% of the total TRP load despite comprising only 50% of total flow.
3) Flow-proportional sampling strategies provided more accurate TRP load estimates than time-proportional strategies and were more cost-effective. Targeting high flow periods is important for reducing phosphorus loss.
August 31 - 0153 - San Simon
This document summarizes a study that evaluated a procedure for prioritizing maintenance of agricultural drainage ditches. The study measured the critical shear stress of soils using a cohesive strength meter to assess their susceptibility to erosion. Soils with higher root densities and those treated with mixed lime showed higher critical shear stresses, meaning they were less susceptible to erosion. Measurements of pressure on the soil surface during testing were mostly lower than estimates from other studies. The procedure effectively identified the relative erosion resistance of different soils, aiding prioritization of drainage ditch maintenance needs.
August 31 - 0130 - Chuck Brandel
ISG worked with Blue Earth County to digitize and modernize their drainage data. They georeferenced existing plans, digitized drainage features, attributed data to the digitized features, and created a geodatabase to house the updated drainage data. This project consolidated Blue Earth County's drainage records, improved data accuracy, and established a process for ISG and the County to regularly update the drainage data going forward. The updated digital records will benefit Blue Earth County, ISG, other engineering firms, and the public.
September 1 - 1139 - Ainis Lagzdins
This document summarizes the results of Latvia's long-term Agricultural Runoff Monitoring programme, which aims to document nutrient concentrations and losses at different spatial and temporal scales. The monitoring covers groundwater, experimental drainage plots, subsurface drainage fields, small catchments, and small/medium rivers at 23 sites. Results show discharge and nutrient concentration data varying by location, scale of monitoring, and between years with flooding or drought. Nutrient levels differed between the Berze and Mellupite monitoring sites and across groundwater, drainage plots, and catchment scales. The programme provides long-term data on agricultural nonpoint source pollution across Latvia.
September 1 - 1116 - David Whetter
This document summarizes an applied research and demonstration project evaluating soil and water management practices in undulating soils in southwestern Manitoba. The project aims to reduce nitrogen, phosphorus and salt export while improving drought resiliency. Preliminary results show tile drainage is lowering water tables most in lower landscape positions, with soil moisture responding rapidly in drained areas. Tile flow rates increase with decreasing elevation. Water quality measurements also show higher salt concentrations in lower positions. Next steps include water quality treatment analysis, long-term monitoring, modeling, knowledge transfer and reporting.
September 1 - 1053 - Matt Helmers
This document summarizes a coordinated research network studying the impacts of 4R nutrient stewardship practices on crop yields, soil health, and nutrient losses across sites in North America. The network included 8 research sites across 6 states/provinces from 2017-2020. Treatments included different fertilizer application timings, placements, sources, and rates. Standardized data collection allowed comparisons across sites. Preliminary findings showed 4R and advanced 4R practices improved nutrient use efficiency and reduced nitrogen losses while maintaining crop yields. Nitrous oxide emissions and nitrate leaching losses decreased under improved nutrient management, though impacts varied between sites and years. Ongoing research aims to further quantify environmental benefits and optimize fertilizer practices.
September 1 - 1030 - Chandra Madramootoo
The document summarizes research on managing drainage water in the Holland Marsh region of Ontario to improve water quality and agricultural productivity. Key points:
- The Holland Marsh is an important vegetable growing region on organic soils, but drainage into Lake Simcoe contributes excess nutrients.
- A study evaluated controlling water tables with controlled drainage to reduce pumping and nutrient loads in drainage water. Modeling and monitoring found it effective for water conservation but more limited for nutrient reductions.
- Soil phosphorus pools, particularly aluminum and iron-bound phosphorus, were found to influence phosphorus levels in drainage water more than drainage management alone. Fertilizer applications exceeded crop needs, accumulating legacy phosphorus in soils over time.
August 31 - 1139 - Mitchell Watkins
This document summarizes a study comparing the effects of conventional ditch drainage (FD) and shallow furrow drainage with tile (SD) on crop yields and water quality in eastern North Carolina. Preliminary results found that SD led to a 68% reduction in drainage volume, 80% less nitrate export, and higher average soybean (+9.1%) and corn (+3.7%) yields compared to FD. SD also requires less land area than FD, has lower maintenance needs, and shows potential to improve water quality and agricultural productivity with more efficient drainage management. The research aims to further quantify these impacts of SD drainage design.
August 31 - 1116 - Shiv Prasher
1) DRAINMOD simulations were conducted for a field in Harrow, Ontario with an asymmetrical drainage system to determine the best approach to simulate drain outflow. 2) Four approaches using different drain spacings were tested: 3.8m, 5.06m, 7.6m, and 15.2m. 3) The mean absolute error and root mean square error for each approach were acceptable, indicating drain spacing had little impact on outflow simulation, though it did impact soil moisture parameters.
August 31 - 1053 - Ehsan Ghane
This document discusses how the choice of pipe material influences drain spacing and system cost. It finds that pipe with more rows of perforations, such as an 8-row regular perforated pipe, has a higher effective radius than a 4-row pipe, allowing for wider drain spacing. Experiments show that a sock-wrapped pipe has the highest drain inflow of the pipes tested, both with and without drain sedimentation present. The key takeaways are that the number of perforation rows and slot length most impact effective radius and drain flow, and a sock-wrapped pipe performs best in terms of drain inflow and spacing.
August 31 - 1030 - Joseph A. Bubcanec
This document summarizes research conducted by the Plastics Pipe Institute (PPI) on the installation of corrugated high-density polyethylene (HDPE) and polypropylene (PP) agricultural drainage pipe. It describes field testing of 30-inch HDPE dual-wall pipe installed at a test site in Ohio, including instrumentation to monitor strain and deflection. Finite element modeling was also used to analyze trench configurations. The research aims to update industry guidance documents to optimize pipe installation practices and trench designs. PPI members also work to increase the use of recycled HDPE and PP materials in pipe production.
September 1 - 130 - McBride
The document discusses Ohio's H2Ohio water quality initiative and its funding of conservation practices including two-stage ditches. It launched in 2019 with $172 million to reduce phosphorus runoff from farms using best management practices like wetlands, buffers, and two-stage ditches. A $5 million grant program was announced to fund two-stage ditch projects based on design guidelines. The document provides details on the grant application process, design requirements using regional curves, and goals to fund 20 projects for 30 miles of ditches at $30 per foot on average.
September 1 - 0216 - Jessica D'Ambrosio
This document provides information on edge-of-field conservation practices and a panel discussion on drainage ditches. It summarizes various practices for nutrient, soil, and sediment removal including vegetated buffers, grassed waterways, prairie strips, wetlands, bioreactors, and controlled drainage. Cost effectiveness data is given for each. The key elements of an edge-of-field roadmap are outlined as building the economic case, increasing implementation capacity, and elevating a culture of conservation. A sample conservation planning scenario shows identified sites for practices treating over 9,000 acres of land. The document concludes with information on connecting with The Nature Conservancy's Ohio agriculture programs.
September 1 - 0153 - Mike Pniewski
This document discusses the implementation and maintenance of two-stage ditches. Two-stage ditches incorporate a floodplain area to increase flow capacity while slowing velocities. They allow for channel vegetation, improve sediment settling, and provide water quality benefits. Challenges include obtaining land access, communication with landowners, permitting, and planting/erosion control. Case studies of implemented two-stage ditch projects in Lucas County demonstrate post-construction conditions and results, including improved drainage and yields for agriculture.
September 1 - 0130 - Johnathan Witter
This document summarizes research on conservation channel design and sediment capture in two-stage ditches. It finds that self-forming channels accumulated more sediment, carbon, nitrogen, and phosphorus over time compared to traditional ditches. Sediment analysis showed higher nutrient levels than surrounding soils. A case study site captured over 500 kg of phosphorus over 9 years that could be harvested and reused as fertilizer, offsetting nutrient costs for farmers. The document concludes sediment trapping in two-stage ditches can improve water quality while providing a locally sourced, cost-effective fertilizer resource.
August 31 - 1139 - Melisa Luymes
Farmers, drainage contractors, researchers, and conservation authorities collaborated on a drainage innovation project at Huronview in Clinton, Ontario. They worked together on the design, installation, and monitoring of new drainage practices to improve water quality and sustainability while maintaining agricultural productivity. A demonstration day was held in June 2019 to share results with stakeholders. The project aimed to foster cooperation across sectors and balance priorities around drainage, research, environmental protection, and social acceptance.
August 31 - 1116 - Hassam Moursi
This document summarizes a study on the impact of drainage water recycling (DWR) on nutrient and sediment losses from agricultural fields in eastern North Carolina. The study found that storing drainage water in an on-farm reservoir for supplemental irrigation (DWR) significantly reduced nitrogen, phosphorus, and sediment concentrations and loads compared to a non-irrigated control field. Specifically, DWR reduced total nitrogen concentration by 40% and load by 47%. It also reduced total phosphorus concentration by 21% and load by 30%. Sediment concentration was reduced by 86% and load by 87%. The hydraulic retention time in the reservoir was found to be the major factor influencing nutrient and sediment removal efficiency.
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The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
原版制作(Newcastle毕业证书)纽卡斯尔大学毕业证在读证明一模一样
学校原件一模一样【微信：741003700 】《(Newcastle毕业证书)纽卡斯尔大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
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二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Environment Conservation Rules 2023 (ECR)-2023.pptx
Bangladesh Environment Conservation Rules 2023 (ECR-2023).
Biomimicry in agriculture: Nature-Inspired Solutions for a Greener Future
Presentation made for the Webinar Series on Biomimicry for sustainability on 1st June 2024 organized by Green Building Council Sri Lanka
Wildlife-AnIntroduction.pdf so that you know more about our environment
All about wildlife, if you are fond of animals and wildlife then do follow us for more content like this
在线办理(lboro毕业证书)拉夫堡大学毕业证学历证书一模一样
学校原件一模一样【微信：741003700 】《(lboro毕业证书)拉夫堡大学毕业证学历证书》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
快速办理(Calabria毕业证书)卡拉布里亚大学毕业证在读证明一模一样
原件一模一样【微信：bwp0011】《(Calabria毕业证书)卡拉布里亚大学毕业证》【微信：bwp0011】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问微bwp0011
【主营项目】
一.毕业证【微bwp0011】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【微bwp0011】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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July 29-350-James Burke
- 2. Buffalo National River (BNR) established by the National Park Service in 1972 (Mott and Laurans, 2004). Encompasses the Ozark Mountain region of north- central Arkansas (White, Haggard, and Chaubey, 2003). The Nation’s first designated Scenic River. Affords numerous recreational and agricultural activities: › Swimming, canoeing and hiking › Forestry, pastureland and livestock/poultry operations
- 3. Map courtesy of the Big Creek Research and Extension Team. https://bigcreekresearch.org
- 5. Present day applications of swine manure (slurry) to fields within the BNR watershed: › Originating from a Concentrated Animal Feeding Operation (CAFO) › Used as a fertilizer source Can possibly lead to elevated levels of soil phosphorus (P) in adjacent waterways: › Base flow/groundwater infiltration › Surface runoff/storm events › Influence of grazing/deposition patterns Excess P in aquatic systems can be detrimental: › Promotion of algal blooms › Reduction of dissolved oxygen › Decrease in aesthetic qualities
- 6. Mount Judea, AR › Big Creek › Tributary to the BNR Three fields involved in study: › Field 1 › Field 5a › Field 12 All fields in cattle/hay production › Fields 1 and 12 receive swine slurry (since 2014) › Field 5a receives mineral fertilizer only Map courtesy of the Big Creek Research and Extension Team. https://bigcreekresearch.org
- 7. Geo-referenced grid-soil sampling › 0.5-acre grid › 2014, 2016 and 2018 Surface (0-4 inch) and subsurface (to refusal) samples › ≈ 160 total sampling sites per sampling year › Analyzed for soil test P
- 8. Statistical analysis › Paired t-test › Probability P = 0.05 › JMP version 14.0/Matched Pairs Platform Location Soil Depth (in.) Number of Samples 2014 Number of Samples 2016 Number of Samples 2018 Field 1 0-4” 71 71 71 Field 5a 0-4” 33 44 44 Field 12 0-4” 40 45 45
- 9. Site Soil Depth (in.) 2014 Soil Test P (mg/kg) 2016 Soil Test P (mg/kg) N for paired t- test Field 1 0-4” 59 a§ 57 a 71 Field 5a 0-4” 45 a 42 a 33 Field 12 0-4” 63 b 104 a 40 §Rows sharing a common letter are not significantly different (P=0.05).
- 10. Site Soil Depth (in.) 2016 Soil Test P (mg/kg) 2018 Soil Test P (mg/kg) N for paired t- test Field 1 0-4” 57 b§ 91 a 71 Field 5a 0-4” 39 b 48 a 43 Field 12 0-4” 104 b 122 a 45 §Rows sharing a common letter are not significantly different (P=0.05).
- 11. Site Soil Depth (in.) 2014 Soil Test P (mg/kg) 2018 Soil Test P (mg/kg) N for paired t- test Field 1 0-4” 59 b§ 91 a 71 Field 5a 0-4” 45 a 50 a 33 Field 12 0-4” 63 b 122 a 40 §Rows sharing a common letter are not significantly different (P=0.05).
- 12. Field 1 (15.6 acres/6.3 hectares)
- 14. Field 5a (23.8 acres/9.6 hectares)
- 16. Field 12 (23.7 acres/9.6 hectares)
- 17. Note soil test P is already above 100 mg/kg here. This is prior to any slurry application to this field.
- 18. No significant increases in soil test P for Fields 1 and 5a from 2014 to 2016. › Significant increase in soil test P for Field 12 in 2016 compared to 2014 (P<0.0001). Significant increase in soil test P for Fields 1 (P<0.0001), 5a (P=0.0285), and 12 (P=0.0001) from 2016 to 2018. Causes for these increases in soil test P for Fields 1, 5a, and 12 from 2014 to 2018: › Periodic slurry application to Fields 1 and 12 › Cattle congregation and loafing patterns › Legacy soil P accumulation over time and mineral fertilizer applications (Field 5a)
- 19. All three fields in this study (1, 5a, & 12) showed a significant increase in soil test P from 2016 to 2018. › Due to periodic slurry applications and cow grazing/deposition › Applications of mineral fertilizers (legacy soil P) Producers from all three fields have been informed: › Agreed to closely manage cattle congregation patterns › Agreed to reduce the number of slurry applications to their respective fields Big Creek Research and Extension Team will continue to ensure the water quality of Big Creek and the BNR: › Intensive soil and water P monitoring › Adaptive conservation practices
- 20. Mott, D. and J. Laurans. 2004. Buffalo River Water Management Plan. United States Department of the Interior. National Park Service. White, K.L., B.E. Haggard, and I. Chaubey. 2004. Water Quality At The Buffalo National River, Arkansas, 1991-2001. Transactions of the ASAE. 47(2):407-417.