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RESULTS <br /> ons <br /> above demonstrate that barley,oats and wheat crops will assimilate nitrogen <br /> produced from manure land applications provided these crops are double-cropped meaning that <br /> two crops are grown per year on the subject acreage. By double-cropping(or single crop for <br /> orchard grass),all the crops should readily assimilate the nitrogen produced from manure <br /> exclusively. No synthetic nitrogen fertilizers should be applied to the cropland. These nitrogen <br /> production calculations from manure are based upon the maximum number of animals,year- <br /> round. Animal populations will not be at the maximum all year,thus incorporating a significant <br /> safety factor. <br /> The organic fraction of the manure must mineralize to plant available nitrogen(PAN),which is <br /> nitrate and ammonium.This only occurs under certain environmental conditions. Typically,an <br /> approximation of 30%of the organic nitrogen fraction is mineralized per year therefore allowing <br /> the plants a slower rate of assimilation. Mineralization will occur in the spring and summer <br /> months of the year when the crop can be replanted or recovers from grazing. <br /> It is imperative that equal distribution of manure prior to cropland planting be observed. Animal <br /> pens that are installed in the cropland must also be rotated when manure accumulates and the <br /> crop has mostly been consumed. <br /> If there should be any questions regarding this document,please contact the undersigned. <br /> Respectfully submitted, .V t o E esu l,o <br /> CHESNEY CONSULTING <br /> fico <br /> c r. <br /> Don Chesney,PE <br /> Registered Civil Eng' eer#C75479 <br /> CA Certified Crop Advisor and Registered Nitrogen Management Specialist#341829 <br /> CA Agricultural Pest Control Advisor#74363 <br /> Page-3- <br /> Chesney Consulting <br /> Planning Commission Staff Report, Item # 1 02/06/2020— PA-1800316 (UP) 38 <br /> Environmental Review <br />