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Identification of Nutrient Distribution at Abandoned Livestock Manure Handling Site Using Electromagnetic Induction

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  012193,  2001 ASAE Annual Meeting. (doi: 10.13031/2013.3843) @2001
Authors:   R.A. Eigenberg, J.A. Nienaber
Keywords:   electromagnetic induction, manure, nutrient, corn, electrical conductivity

Movement of nutrients from livestock manure handling sites has the potential to negatively impact the environment. This study was conducted to determine whether electromagnetic induction (EMI) could be used to identify regions of nutrient build-up beneath an abandoned compost site. A trailer mounted EM-38, coupled with a global positioning satellite system, was towed across an area used for composting of feedlot manure. The resulting maps gave clear indication of the location of the composting rows. The identified rows were cored and compared with the region between the rows. The rows demonstrated significantly greater soluble salts (1.6 times greater), NO3 (6.0 times greater), and Cl (2.0 times greater) compared to the area between the rows to a 1.5m depth (P<0.05). The use of EMI for mapping of sites having a history of livestock waste application was effective in locating high nutrient buildup areas.

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