Hog manure is recognized as a valuable resource, largely because the N it contains is mostly in the form of NH4-N. This binds to soil and is less prone to leaching to groundwater than NO3-N. Nevertheless, monitoring nutrient loading to land reliably is more difficult with manure than with inorganic fertilizer. Manure is variable in composition from one store to another, and difficult to maintain in a homogeneous state due to settling of particulate material. Few data exist on the variability in composition of hog manure during application to land. For a study of the feasibility of analyzing hog manure rapidly with near-infrared spectroscopy, 121 manure samples were collected from 13 hog operations in the vicinity of Winnipeg MB between 28 September and 4 November 2000. All but two of these operations held the manure in
\nearthen stores, one had a slurry store and a secondary lagoon, and one had above ground storage. Six of the operations were visited once and seven were visited from two to seven times during pump-out from agitated lagoons. Several of these were visited at the start and finish of pump-out, as well as periodically in between. At most sites, a pail was filled from the drop-out valve on the umbilicus during actual field application. The manure in the pail was well-stirred and four 1-L subsamples were taken immediately after one another in polyethylene bottles. Samples were analyzed by the Freshwater Institute Analytical Laboratory for pH, conductivity, density, ammonium-nitrogen (NH4-N), total dissolved nitrogen (TDN), particulate nitrogen, dissolved phosphorus (dissolved P), particulate P, and particulate carbon (particulate C, i.e., a
\nmeasure of the particular organic matter). Eighty of the 121 samples of manure were analyzed for 31 metals and minor elements by inductively coupled plasma spectrometry, and for % moisture by Norwest Labs. Some or all of the values for Ag, As, Bi, Pb, Sb, Se, Sn, Ti and V were below the limits of detection for the method. These are not considered further here.<\/p>\n","protected":false},"excerpt":{"rendered":"
Hog manure is recognized as a valuable resource, largely because the N it contains is mostly in the form of NH4-N. This binds to soil and is less prone to leaching to groundwater than NO3-N. Nevertheless, monitoring nutrient loading to land reliably is more difficult with manure than with inorganic fertilizer. Manure is variable in […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[8882,2854,1402,767,4023,20007,34,914,13370,355,2476,169,187,521,198,200,487,188,16262,92,210,20912,10101,309,20911,18011,6053,2446,69],"class_list":["post-1547","post","type-post","status-publish","format-standard","hentry","category-environment","tag-al","tag-bin","tag-carbon","tag-compost","tag-cycle","tag-gh","tag-hog","tag-hog-manure","tag-ken","tag-lagoon","tag-loading","tag-manure","tag-nitrogen","tag-nutrient","tag-odor","tag-odour","tag-ph","tag-phosphorus","tag-pl","tag-plasma","tag-slurry","tag-some","tag-start","tag-storage","tag-t","tag-tot","tag-use","tag-variability","tag-water"],"_links":{"self":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/1547","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/comments?post=1547"}],"version-history":[{"count":0,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/1547\/revisions"}],"wp:attachment":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=1547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=1547"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=1547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}