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f F-Mitirogen BaBancoe Nitrogen required at fields 256,517 lbs.N F�' Nitrogen from liquids: 121,228 lbs.N Nitrogen shortage from liquids: 135,289 lbs.N Nitrogen from solids: 98,654 Itis.N Nitrogen shortage: 36,635 lbs.N 14" 3 Nitrogen Loading Conclusion' The Current farming operation is adequate to consume afl the nitrogen contained in the liquids and solids generated at the site. FO As indicated in the calculations above,the remaining nitrogen that will be in liquids and solids after storage losses in the flush lagoon are fewer than the calculated nitrogen demand from the proposed farming acreage_ n Composting of the manure solids will condition the solids prior to application to the farm. - o Composting converts an organic waste material Into a stable organic product by converting nitrogen from the unstable ammonia form to a more stable organic form.The end result is a product that is safer to use than raw organic material. Q Composting can reduce the nitrate content of the solids due to anaerobic bacterial activity.Anaerobic activity will cause denitifEcation r of nitrate to convert the nitrates to the gaseous form as nitrous oxide or nitrogen gas during the romposting process. This gas then escapes into the atmosphere.Considering that composting is an aerobic activity,anaerobic activity can be controlled by simply turning the material to aerate it at the proper time which is the point at which aerobic bacterial activity has consumed all the Foxygen with in the mix. ❑Manure is more carbe naceous than commercial fertilizer and carbon is a Common energy source to bacteria.Consequently,some denitification will also take place in the soil naturally. 6 Compost is used primarily as a fertilizer supplement and soil conditioner.Compost improves soil structure and fertility.Nutrients in finished compost will be slowly released over a period of years,thus minimizfng the risk of nitrate leaching and high nutrient FConcentrations in surface runoff. ❑A balanced liquidslsoms application rates are favorable to the agranomical management of the soil because of the soil requiring _ organic materials to increase tilth,water intake rate,water retention capabilities and Consequently,nitrate retention capability. d It is important to apply nutrients through out the growing season as the crop requires it. F0 The lagoon water needs to be managed in such a fashion that the irrigation pond is empty prior to the winter rainfall season,yet not applying nutrients to the crops when trey are not needed. Over irrigation needs to be at a minimum for nitrates can be pushed through the soil profile due to the low water holding capacity of the farms'soils. k I I I I r i i i F- I