{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T01:40:59Z","timestamp":1791855659499,"version":"4.3.4"},"reference-count":26,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2002,11,1]],"date-time":"2002-11-01T00:00:00Z","timestamp":1036108800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["acsess.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Env Quality"],"published-print":{"date-parts":[[2002,11]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>Ammonia emissions after spreading animal manure contribute a major share to N losses from agriculture. There is an increasing interest in anaerobic co\u2010digestion of liquid manure with organic additives. This fermentation results in a change of physical and chemical parameters of the slurry. Among these are an increased pH and ammonium content, implying a higher risk of NH<jats:sub>3<\/jats:sub> losses from fermentation products. To compare different application techniques and the effect of fermentation on NH<jats:sub>3<\/jats:sub> volatilization, we used the standard comparison method and tested it for reliability. This method seems to be perfectly suited for experiments with a large number of treatments and replicates if prerequisites concerning the experimental layout are considered. We tested four different application techniques on arable and grassland sites. The more the substrate was incorporated into the soil or applied near the soil surface on the grassland site, the less NH<jats:sub>3<\/jats:sub> was lost. Injection of the substrate reduced losses to less than 10% of applied NH<jats:sup>+<\/jats:sup><jats:sub>4<\/jats:sub> on both sites, whereas losses after splash plate application amounted to more than 30%. Trail shoe application on grassland performed as well as injection. Harrowing on arable land also reduced emissions efficiently, if harrowing occurred within the first 2 h after application. Emissions from trail hose\u2013applied co\u2010fermentation product were not greater than from unfermented slurry. Better infiltration of the less viscous substrate seemed to have compensated for the increased loss potential.<\/jats:p>","DOI":"10.2134\/jeq2002.1789","type":"journal-article","created":{"date-parts":[[2010,6,14]],"date-time":"2010-06-14T03:38:16Z","timestamp":1276486696000},"page":"1789-1794","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":86,"title":["Application Technique and Slurry Co\u2010Fermentation Effects on Ammonia, Nitrous Oxide, and Methane Emissions after Spreading"],"prefix":"10.1002","volume":"31","author":[{"given":"S.","family":"Wulf","sequence":"first","affiliation":[{"name":"Institute of Plant Nutrition University of Bonn Karlrobert\u2010Kreiten\u2010Str. 13 53115 Bonn Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Maeting","sequence":"additional","affiliation":[{"name":"Institute of Plant Nutrition University of Bonn Karlrobert\u2010Kreiten\u2010Str. 13 53115 Bonn Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Clemens","sequence":"additional","affiliation":[{"name":"Institute of Plant Nutrition University of Bonn Karlrobert\u2010Kreiten\u2010Str. 13 53115 Bonn Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2002,11]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"271","article-title":"Studien \u00fcber den Stickstoffhaushalt der Jauche. 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