WinterManureApplppt

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Information about WinterManureApplppt
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Published on January 7, 2008

Author: Marian

Source: authorstream.com

Manure Management Issues, Challenges & Solutions:  Manure Management Issues, Challenges & Solutions Winter Manure Application:  Winter Manure Application Water Quality Concerns Nutrient Management Concerns Special Winter Application Criteria Best Management Practices - BMPs BMPs:  BMPs Best management practices (BMPs) relating to waste management are those practices that optimize nutrient uptake by plants and minimize nutrient impact on the environment. Best management practices are very site specific, and a BMP in one place may not be useful for another location. Nutrients in the Water - A Resource Out of Place:  Nutrients in the Water - A Resource Out of Place Water Quality Contaminants in Manure:  Water Quality Contaminants in Manure 1) Nitrate-N Health 2) Ammonia-N Fish Kills 3) Phosphorus Eutrophication 4) Pathogens Health 5) Organic Matter Oxygen Depletion Possible Environmental Pollutants Risk Ammonia and Pathogens:  Ammonia and Pathogens Cold Water Temperature Maintains the concentration of ammonia longer Maintains the viability of pathogens longer Why Manure and Nutrient Management:  Why Manure and Nutrient Management Utilize/Budget nutrients from manure for crops Minimize nitrogen and phosphorus runoff and leaching Minimize manure runoff Minimize pathogen contamination to surface and ground water Maintain and improve soil and crop quality “Sound Agronomic Management” Nutrient Management:  Nutrient Management Applying nutrients at the proper time, rate, and method of application to meet the crop and soil needs while minimizing adverse environmental issues to the soil, water, air, plant, and animal resources. Winter Manure Application – Nutrient Management or Disposal ??? Winter Application Issues:  Winter Application Issues Goal Soluble Runoff Surface Runoff Flooding Winter Runoff Risk Winter Application Issues:  Winter Application Issues Winter Runoff Limited Absorption Large Application Areas High Runoff Flooding Addressing Winter Manure Application Concerns:  Addressing Winter Manure Application Concerns Mgt. to Reduce Runoff Flat to gently sloping Ground/soil cover Distance to drainage ditch or water Avoid flood prone areas Low application rates Smaller application areas Dealing with Winter Manure Runoff Risks:  Dealing with Winter Manure Runoff Risks #1 - Plan to avoid winter applications More manure storage Make applications just prior to winter to maximize manure storage Adjust rotations to allow more applications during low risk seasons (summer and fall) Reducing Runoff Risk:  Reducing Runoff Risk Flat and Gently Sloping Fields Less Runoff Slower Runoff Criteria to Follow Slopes less than 6% (A and B Slopes) Slopes more than 6% (60 strips with 200 foot separation) Setback / Separation Scheme:  Setback / Separation Scheme <20 Ac <20 Ac 200 ft. Setback/Separation Stream Reducing Runoff Risk:  Reducing Runoff Risk Ground/soil cover Hold more manure and nutrients Filter Less runoff Slower runoff Criteria to follow… 90% ground or surface cover Corn stalks, pasture, hay Reducing Runoff Risk:  Reducing Runoff Risk Distance to drainage ditch or water Increases travel distance of pollutants Provides filter and absorption area Criteria to follow… 200 feet from all drainageways and water bodies Minimum Winter Setbacks:  Minimum Winter Setbacks 200 ft. Setback 200 ft. Setbacks limit application area:  Setbacks limit application area Grassed Waterways with 200 ft. Setbacks Reducing Runoff Risk:  Reducing Runoff Risk Avoid flood prone areas Avoids runoff from washing manure from the fields Criteria to follow… Avoid winter manure application in flood prone areas Reducing Runoff Risk:  Reducing Runoff Risk Low manure application rates Less manure for runoff More chance for adsorption and absorption Criteria to follow… Less than 10 wet tons if more than 50% moisture Less than 5 wet tons if less than 50% moisture Less than 5000 gallons of liquid manure Reducing Runoff Risk:  Reducing Runoff Risk Smaller application areas Less manure applied = less source of pollutant Less risk Criteria to follow… Not more than 20 contiguous acres Separate 20 acre blocks by 200 feet Large winter application areas present a very high risk for runoff. Minimizing Manure Runoff - Winter:  Minimizing Manure Runoff - Winter ON FROZEN / SOIL COVERED SOIL Need 90% ground cover Increase setback to minimum of 200 feet Limit rate to 5000/gal/ac or 10 wet tons/ac Limit to 20 contiguous acre – separate by 200 feet Slopes over 6% - apply in alternate 60 – 200 foot strips Manure Application Setbacks Non-CAFO:  Manure Application Setbacks Non-CAFO Healthy Crops & Environment:  Healthy Crops & Environment Good agronomic standards are socially acceptable, economically viable, and environmentally sound. Special Thanks:  Special Thanks Rick Wilson & Melinda Harris, OEPA ODNR-Division of Wildlife Mike Monnin-NRCS Norman Widman-NRCS Jon Rausch-OSUE Mark Fritz, MNM Specialist Local SWCD’s

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