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dc.contributor.authorHarris, Keith Richard
dc.description.abstractA defined methodology to characterize biochar is necessary to predict how specific biochars will affect C and nutrient mineralization when amended on cropland soils. We amended Tifton soil (Fine-loamy, siliceous, thermic Plinthic Kandiudults) with Peanut Hull (Arachis hypogaea; PH) and Pine Chip (Pinus taeda; PC) biochar and monitored C and N mineralization. In addition, we characterized each biochar using thermogravimetric analysis with mass spectrometer (TGA-MS), proximate analysis, Fourier transform infrared spectroscopy (FTIR), and total mineral analysis. Carbon mineralization from chars added to soils was correlated with estimated aliphatic content determined by TGA-MS but not with volatile content indicated by proximate analysis. Nitrogen was not mineralized from either biochar, indicating that biochar should not be considered a source of nitrogen for plant growth. The nitrogen in biochar may be contained in the stable aromatic structures of the biochar, as indicated by TGA-MS, and not available to soil microbes.
dc.subjectCarbon mineralization
dc.subjectNitrogen mineralization
dc.subjectPeanut hull
dc.subjectPine chip
dc.subjectAliphatic matter
dc.subjectVolatile matter
dc.titleCharacterization and mineralization rates of low temperature peanut hull and pine chip biochars
dc.description.departmentCrop and Soil Sciences
dc.description.majorCrop and Soil Sciences
dc.description.advisorMiguel L. Cabrera
dc.description.committeeMiguel L. Cabrera
dc.description.committeeWilliam P. Miller
dc.description.committeeJulia Gaskin

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