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Permanent link (DOI): https://doi.org/10.7939/R3BK16R6F
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Herbage yield and crude protein concentration of rangeland and pasture following liquid hog manure application in southeastern Alberta Open Access
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Bork, E. W.
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crude protein yield
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Intensive hog production is expanding into semi-arid regions of Alberta, where perennial forage lands are increasingly targeted for manure applicati on despite limited guidelines for its efficient use. Herbage yield and crude protein were assessed over two consecutive years within two native rangelands and two tame pastures, following different rates (10, 20, 40, 80 and 160 kg ha-1 NH4-N), methods (surface banding vs. subsurface injection) and seasons (fall vs. spring) of one-time liquid hog manure (LHM) application. Increasing manure rates improved grass yield across all sites the first growing season after treatment, from 1626 to 3576 kg ha-1. Although absolute increases in production were greatest on tame pasture, relative yield increases were similar among sites. Average crude protein (CP) concentration also increased from 69 to 91 g kg-1 in the first year. Despite low rainfall and the absence of a yield response in the second year, grass CP and crude protein yield (CPY) were maximized with increased manure application, highlighting the positive effects of manure on forage production, even with drought. Forb yields demonstrated variable effects among sites, with increasing manure decreasing alfalfa and increasing native forbs. Overall, both semi-arid tame pastures and native rangelands responded positively to LHM application, highlighting the complementary nature of hog and forage production under these conditions.
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- @2004 Blonski, L.J., Bork, E. W., Blenis, P. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
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Blonski, LJ, Bork, E.W., and P Blenis. (2004). Herbage yield and crude protein concentration of rangeland and pasture following liquid hog manure application in southeastern Alberta. Canadian Journal of Plant Science, 84(3), 773-783. http://dx.doi.org/10.4141/P03-103
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File title: Herbage yield and crude protein concentration of rangeland and pasture following hog manure application in southeastern Alberta
File author: Laura J. Blonski, Edward W. Bork, Peter V. Blenis