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Hog manure-recovered struvite as a phosphorus source for enhanced phosphorus use efficiency and reduced seedling toxicity in canola

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dc.contributor.supervisor Zvomuya, Francis (Soil Science) en_US
dc.contributor.author Katanda, Yeukai
dc.date.accessioned 2014-11-04T19:12:41Z
dc.date.available 2014-11-04T19:12:41Z
dc.date.issued 2014-11-04
dc.identifier.uri http://hdl.handle.net/1993/25155
dc.description.abstract Hog manure phosphorus (P) can be recovered as struvite or magnesium ammonium phosphate hexahydrate (MgNH4PO4∙6H2O). The recovered struvite has slow-release properties and may be used as a P-source for crops. Two pot experiments were conducted to evaluate the agronomic effectiveness and seedling toxicity of liquid hog manure-recovered struvite for canola (Brassica spp.) and wheat (Triticum aestivum). While wheat was non-responsive to P application, canola dry matter yield (DMY) from struvite (1.9 g kg-1) was similar to that from monoammonium phosphate (MAP) (1.8 g kg-1) and coated-monoammonium phosphate (CMAP) (1.7 g kg-1). Importantly, when P was seed-placed at the higher rate (15 mg kg-1), canola seedling emergence was significantly greater with struvite (90%) and CMAP (85%) than with MAP (60%). The results demonstrate the potential of struvite as an effective P-source for canola in P-deficient soils, which can be safely applied at higher rates than those currently recommended for seed-placed MAP. en_US
dc.subject struvite en_US
dc.subject Brassica napus en_US
dc.subject phosphorus use efficiency en_US
dc.subject seedling toxicity en_US
dc.title Hog manure-recovered struvite as a phosphorus source for enhanced phosphorus use efficiency and reduced seedling toxicity in canola en_US
dc.degree.discipline Soil Science en_US
dc.contributor.examiningcommittee Flaten, Don (Soil Science) Cicek, Nazim (Biosystems Engineering) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note February 2015 en_US


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