L.M. Safley Jr. , P.W. Westerman , J.C. Barker , L.D. King , D.T. Bowman
{"title":"Slurry dairy manure as corn nutrient source","authors":"L.M. Safley Jr. , P.W. Westerman , J.C. Barker , L.D. King , D.T. Bowman","doi":"10.1016/0141-4607(86)90004-1","DOIUrl":"10.1016/0141-4607(86)90004-1","url":null,"abstract":"<div><p>Application of slurry dairy manure were made on five different farms in the Piedmonts region of North Carolina for three consecutive springs and two falls. The manure supplied sufficient nutrients to produce corn <em>(Zea mays</em> L.) silage yields comparable with commercial fertilizer applications at soil test recommendations. The calculated availability of manurial N varied between farms. Yield was usually not significantly different for fall and spring applications of manure, but sometimes the spring manure application resulted in greater yield. The use of a nitrification inhibitor in fall-applied dairy slurry did not give significant yield differences when compared with similar fall treatments that did not receive this material. For maximum manure utilization efficiency application rates should be below 224kg N ha<sup>−1</sup> (80 m<sup>3</sup> manure ha<sup>−1</sup>). The slurry manure nutrient concentrations were found to vary considerably between farms and from season to season at a given farm, indicating the desirability of seasonal manurial analysis. Some test sites, due to previou manure and/or fertilizer applications, were found to be unresponsive to either manure or fertilizer applications. Nitrogen availability (NA) was found to vary with site; however, spring manure applications appear to give higher NA values.</p></div>","PeriodicalId":100062,"journal":{"name":"Agricultural Wastes","volume":"18 2","pages":"Pages 123-136"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-4607(86)90004-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80647287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nitrogen transformations in an aerated lagoon treating piggery wastes","authors":"Jan A. Oleszkiewicz","doi":"10.1016/0141-4607(86)90064-8","DOIUrl":"10.1016/0141-4607(86)90064-8","url":null,"abstract":"<div><p>Effluents from anaerobic lagoons were treated in two parallel aerated lagoons, at variable organic load and hydraulic residence time. The removal of total Kjeldahl nitrogen (TKN) was found to increase rapidly at higher TKN food to microorganisms (F/M) ratios. At BOD F/M ratios below 0·6 kg kg<sup>−1</sup> day<sup>−1</sup> nitrification manifested itself through accumulation of oxidised forms of nitrogen. The apparent decrease in denitrification, evidenced by nitrites and nitrates present at these loads, can be attributed to an inadequate supply of easily available carbon as electron donor. Accumulation of nitrites at lower loads (higher residence times) might have been due to free nitrous acid toxicity to the <em>Nitrobacter</em> species. A maximum TKN removal of 50% was achieved at TKN F/M = 0·5, which corresponded to a BOD/TKN ratio of 3·4.</p></div>","PeriodicalId":100062,"journal":{"name":"Agricultural Wastes","volume":"16 3","pages":"Pages 171-181"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-4607(86)90064-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78766193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Utilization of beet molasses and whey for fat biosynthesis by a yeast","authors":"W. Bednarski, J. Leman, J. Tomasik","doi":"10.1016/0141-4607(86)90104-6","DOIUrl":"https://doi.org/10.1016/0141-4607(86)90104-6","url":null,"abstract":"","PeriodicalId":100062,"journal":{"name":"Agricultural Wastes","volume":"6 1","pages":"19-26"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90206595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Laboratory methods for estimating available nitrogen in manures and sludges","authors":"G. Chescheir, P. Westerman, L. Safley","doi":"10.1016/0141-4607(86)90112-5","DOIUrl":"https://doi.org/10.1016/0141-4607(86)90112-5","url":null,"abstract":"","PeriodicalId":100062,"journal":{"name":"Agricultural Wastes","volume":"39 1","pages":"175-195"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90515052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A note on the changes in the bulk density of crop residues due to the application of uniaxial pressure","authors":"A.K. Jain, V.R. Sharma, B.S. Pathak","doi":"10.1016/0141-4607(86)90081-8","DOIUrl":"10.1016/0141-4607(86)90081-8","url":null,"abstract":"<div><p>This paper reports the change in the bulk density of the residues of ten different crops, commonly cultivated in north India, as a result of the application of uniaxial pressure. Empirical relationships between the magnitude of pressure and the resultant density are developed for each residue. The results are compiled and presented in the form of a nomogram from which the density of any residue corresponding to a particular uniaxial pressure can be easily determined. The information presented in this paper will be useful in designing the process and equipment for the densification of crop residues.</p></div>","PeriodicalId":100062,"journal":{"name":"Agricultural Wastes","volume":"16 2","pages":"Pages 89-95"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-4607(86)90081-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89314963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The use of nuclear techniques to improve domestic buffalo production in Asia","authors":"P.N. Hobson","doi":"10.1016/0141-4607(86)90129-0","DOIUrl":"https://doi.org/10.1016/0141-4607(86)90129-0","url":null,"abstract":"","PeriodicalId":100062,"journal":{"name":"Agricultural Wastes","volume":"15 1","pages":"Pages 77-78"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-4607(86)90129-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89995045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Operation of a laboratory-scale tubular digester on piggery waste","authors":"J.R.S. Floyd, Freda R. Hawkes","doi":"10.1016/0141-4607(86)90106-X","DOIUrl":"https://doi.org/10.1016/0141-4607(86)90106-X","url":null,"abstract":"","PeriodicalId":100062,"journal":{"name":"Agricultural Wastes","volume":"18 1","pages":"39-60"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0141-4607(86)90106-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90026859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}