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P k 633-3 textured soils and 60 lbs./ac.N on other soil types Nitrogen Volatilization Losses (increase to 80 lbs./ac.N on other than coarse Consider nitrogen volatilization losses associated textured soils for drag hose applications if the 60 with surface applications of manure and other lb./ac.rate cannot be applied). organic materials. Such losses are significant unless manure is immediately incorporated into Apply on areas furthest from receiving waters or the soil. Encourage incorporation within 24 that have gentlest slopes and also have lowest hours. Soil Test Phosphorus levels. N and P excreted by animals Time application to periods of greatest plant Consider agronomic,nutritional and managerial nutrient need. Do not apply when the ground is practices which reduce the amount of N and P frozen,snow covered or actively thawing. excreted by animals. These practices include: • using high quality protein sources Do not apply organic materials on soils classified • feeding low protein,amino acid by USDA-NRCS as frequently flooded. supplemented diets • avoiding excessive overages of dietary P Periodically test for soil P content and cease • balancing diets on an available P basis applications when test results indicate 75 ppm or • using feed ingredients that possess highly higher Bray 1 phosphorus(60 ppm Olsen). available P(e.g.high-moisture corn or wheat) Do not apply organic nutrients to the entire field. • using enzyme additives such as phytase to Leave large enough portions of the field improve ability to utilize P in rations(applies undisturbed to provide nesting and cover habitat most to swine). for wildlife. Alternative uses Maintain vegetation on CRP fields at no less than an 80%cover condition after application. Repair Consider various uses of organic nutrients when developing a utilization plan(e.g. composted and reseed areas damaged by application of potting medium,biogas production,feed). organic nutrients. Follow all regulations and precautions relative to CONSIDERATIONS refeeding of manure and animal parts or sale of composted materials. Travel Time Composting Consider travel time and route to fields when Consider composting to reduce waste volume. scheduling fields for organic material applications. Minimize travel time on roads and Consult Manure Management Alternatives: A highways. Supplemental Manual,MDA, 1995; Poultry Water Quality Handbook,Poultry Water Time of Day and Odor Quality Consortium, 1994;and Manure Consider morning applications to minimize odor Management: Practices for the Minnesota if applications on warm days are necessary. Pork Industry,MN Ext. Serv., 1994 for additional detail on composting,refeeding, Good Neighbor Practices and Odor Consider"good neighbor practices"when land rationand other alternative uses of organic materials. applying manure and other organic by-products. These practices include not spreading: a.)before PLANS AND SPECIFICATIONS holidays and weekends when people are engaged in outdoor activities;b.)near heavily traveled The manure and other organic by-product plan highways;c.)when wind would blow odors will address all uses of manure and organic by- toward populated areas and d.)on calm,humid products including as appropriate energy days on fields in close proximity to residences production,refeeding,off-site transport and and roadways.Also consider injection or carcass disposal. incorporation within 24 hours if applied on sites within 300 feet of residences and 1000 feet of roads. NRCS-Minnesota May 2001