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Showing 1 to 20 of 33 for “"manure management"”.
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Water Quality Impacts of Cover Crop/Manure Management Systems
… a rye cover crop and application of liquid dairy manure in the spring and fall. The four management systems were: 1) traditional, 2) double-crop, 3) roll-down, and 4) undercut. In the fourth system, manure was applied below the soil surface during the undercutting process. In all other systems, …
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Manure management decision-making of cattle-feed growers in northeastern Colorado
… resulting from concentrated feedlot manure disposal as administered by livestock-feed farmers. Efficient manure management is one approach to minimizing nutrient pollution of rural groundwater and surface waters, and crop-farmers near the feedlots are de facto manure managers. This …
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ENGINEERING INFORMATICS AND SYSTEMS MODELING FOR OPTIMIZATION OF ANIMAL MANURE MANAGEMENT
… at a lower cost. However, accumulative manure produced in AFOs cannot be efficiently utilized in a sustainable and economical way. How to develop the animal manure management strategy is a challenge for both the local agricultural production industry and the ecological system. The …
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Impact of Manure Management Practices on the Environmental Fate of Antibiotics in Manure-Applied Fields
… and antibiotic resistance genes from animal manure applied to soil as fertilizer are now among the most concerned contaminants in soil. The widespread use of antibiotics in livestock might amplify the risk of developing antibiotic resistance, causing once treatable diseases to turn deadly. …
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Evaluation of Manure Management Systems (MMS) and Cost-Share Programs for Mitigating Livestock Environmental Impacts
… creating the need to implement climate-smart manure management practices to alleviate manure's pollutive potential through greenhouse gas emissions (GHGe) and excess nutrient management. Manure management systems (MMS) require high initial investment for implementation and are often …
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Financial costs and economic tradeoffs of alternative manure management policies on dairy and dairy/poultry farms in Rockingham County, Virginia
… environmental benefits from three alternative manure management policies, incorporating all manure (INCORP), limit nitrogen applications to agronomic recommendations (NLIMIT), and phosphorus applications limited to crop removals (PLIMIT), on representative 60, 100, and 150-cow dairy and …
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Towards development of biogas production for New Zealand on-farm greenhouse gas reduction
The current non-circular approaches to farm dairy manure management in New Zealand (NZ) have prompted research into alternative strategies. Anaerobic digestion (AD), by capturing methane as biogas and producing biofertiliser, offers a promising solution to reduce greenhouse gas (GHG) emissions and …
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Soil testing and plant analysis to optimize nitrogen management in manured cornfields
<p>Land application of animal manure is widely accepted as a method of recycling plant available nitrogen (N) within agricultural systems, but there is great need to improve the efficiency of this recycling. Soil testing and plant analysis are widely accepted as important tools for managing plant …
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Concentration and extraction of phosphorus from swine manure slurries as struvite
… variations of magnesium demand within the manure slurries. (2) Developing and testing a short-retention-time pilot-scale reactor that: (a) Effectively and reliably reduces DRP in a variety of swine manure slurries; (b) Provides separation and recovery of precipitated struvite for TP …
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Survival and Overland Transport of Fecal Coliform under Canadian Prairie Conditions
… work and cost associated with feed transport and manure management. Despite the economic advantages; wintering grounds for livestock operations can have profound impacts on water quality. Animal waste accumulated during winter can be transported to surface water with spring snowmelt. The potential …
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Integrating Machine Learning Into Process-Based Modeling to Predict Ammonia Losses From Stored Liquid Dairy Manure
Storing manure on dairy farms is essential for maximizing its fertilizer value, reducing management costs, and minimizing potential environmental pollution challenges. However, ammonia loss through volatilization during storage remains a challenge. Quantifying these losses is necessary to inform …
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INTEGRATED TERRITORIAL APPROACH FOR SUSTAINABLE AGRICULTURE: NITROGEN MANAGEMENT AND SOIL CARBON SEQUESTRATION IN LOMBARDY REGION
… Policy), to promote the implementation of best management practices. Consequently, assessing the potential effects of different policies, prior to their introduction, has become very important. Several methods (direct measurements, simulation models, simple and composite indicators) have been …
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Estimating Costs of Reducing Environmental Emissions From a Dairy Farm: Multi-objective epsilon-constraint Optimization Versus Single Objective Constrained Optimization
… livestock production (dairy and broiler), and manure management activities. Results from NLP optimization indicate that reducing P and ammonia emissions is relatively more expen- sive than N and GHG. This result is also confirmed by the ϵ-constraint optimization. However, the latter approach …
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Evaluating the Fate of Manure Nitrogen in Confined Dairy Waste Operations: a Full-Scale Waste Analysis and Start-Up Protocol for an Anammox-Based Treatment Technology Applicable to Dairy Waste Management
… potential use of OLAND-based systems in dairy manure management, a detailed water quality assessment of a modern dairy farm manure treatment-system was conducted. The Johnson Highland Dairy Farm, Glade Spring, Virginia, was selected for this assessment and a comprehensive analysis of the …
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Enhanced Biological Phosphorus Removal from Dairy Manure to Meet Nitrogen:Phosphorus Crop Nutrient Requirements
… farms. This has led to greater amounts of excess manure nutrients on farms, increasing the potential for nutrient pollution of water bodies from runoff. The purpose of this study was to determine if enhanced biological phosphorus removal (EBPR) is a viable alternative for managing excess manure …
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Toward circular and sustainable nitrogen (N) management in the US and globally
… efforts to improve farm-level nutrient management, persistent nutrient pollution indicates that N management challenges extend beyond individual farms and sectors. Therefore, a full life-cycle perspective, tracing N production, use, accumulation, and loss, is essential for identifying …
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Tracking Antibiotic Resistance throughout Agroecosystems
… the most critical potential points of best management control of antibiotic resistance spread along the agricultural production chain. The relative impacts of agricultural practices, manure management, native soil microbiota, and type of crop grown and harvested on the agricultural resistome …
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Impact of Manure Land Management Practices on Manure Borne Antibiotic Resistant Elements (AREs) in Agroecosystems
… primarily with livestock rearing. Animal manure land application integrates livestock farming and agroecosystems. This manure contains antibiotic resistant elements (AREs) (resistant bacteria, resistance genes, and veterinary antibiotics) that contribute towards antimicrobial resistance. …
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The Occurrence and Fate of Steroid Hormones from Manure Amended Agriculture Fields
… sexual development of aquatic organisms. Animal manure applications to agricultural fields for nutrient management can be a source of environmental hormones. This dissertation investigates the occurrence of hormones in fields applied with various manures and their adjacent streams, as well as the …
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