Most management plans have been balanced for nitrogen plant uptake, however this can lead to elevated soil phosphorus (P) levels with repeated manure applications. Elevated P levels in water sources can lead to eutrophiication, which occurs when there is an abundant source of nutrients in the water source. To aid in decreasing the impact of phosphorus on water sources, a phosphorus risk index (PRI) was develoeped for manure management on dairy operations in North Central Texas. The objective of the PRI was designed to evaluate the risk of P movement from manured fields, identify areas with high potential for P runoff, determine causes of P risk and measure the change in risk over time with changes in P management strategies.<\/p>\n
The PRI uses nine weighted indexing parameters that reflect the importance of each factors contribution in the potential risk of P runoff. These include: proximaity to waterbodies, erosion potential of the site, runoff potential of the site, soil test phosphorus levels, manure application rate, manure application method, timing of manure application, vegatative management, grazing management. Each parameter was also assigned a risk category for P runoff as very low, low, medium, high or very high. Individual tracts of land were rated according to the above parameters and given a risk assesment score, and this score corresponded to a relative risk category. This indexing procedure helps to identify potential P problems with potential fields and oulinres best management practices to address P concerns, and aid in the development of nutrient management plans.<\/p>\n","protected":false},"excerpt":{"rendered":"
Most management plans have been balanced for nitrogen plant uptake, however this can lead to elevated soil phosphorus (P) levels with repeated manure applications. Elevated P levels in water sources can lead to eutrophiication, which occurs when there is an abundant source of nutrients in the water source. To aid in decreasing the impact of […]<\/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":[19102,8882,640,13816,45,19644,2072,20007,6492,48,169,258,187,1640,3465,15459,188,16262,2365,20911,4874,1579,766,69,446,1301],"class_list":["post-1487","post","type-post","status-publish","format-standard","hentry","category-environment","tag-address","tag-al","tag-animal","tag-ass","tag-dairy","tag-dd","tag-eutrophication","tag-gh","tag-help","tag-management","tag-manure","tag-manure-management","tag-nitrogen","tag-nutrient-management","tag-pea","tag-ped","tag-phosphorus","tag-pl","tag-risk","tag-t","tag-tan","tag-test","tag-waste","tag-water","tag-water-quality","tag-weight"],"_links":{"self":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/1487","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=1487"}],"version-history":[{"count":0,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/posts\/1487\/revisions"}],"wp:attachment":[{"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/media?parent=1487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/categories?post=1487"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prairieswine.com\/rsc\/wp-json\/wp\/v2\/tags?post=1487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}