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FXR'n% SULTS <br /> The calculations 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, I 4iofessto <br /> CHESNEY CONSULTING z\oma 1)- Che <br /> No.75-179 <br /> ti <br /> Civil <br /> (� <br /> Of Cat�io <br /> Don Che ney, PE <br /> Registered Civil Eng' eer#C75479 <br /> CA Certified Crop Advisor and Registered Nitrogen Management Specialist#341829 <br /> CA Agricultural Pest Control Advisor 474363 <br /> Page -3- <br /> Chesney Consulting <br />