Effect of Biochar Feedstock and Application Rate on Carbon and Nitrogen
Mineralization
Keith Harris
Crop and Soil Sciences Seminar
Wednesday April 8, 2009, 3:35 PM
Room 2401, Miller Plant Sciences Building
Intensive land management and a warm humid...
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Effect of Biochar Feedstock and Application Rate on Carbon and Nitrogen
Mineralization
Keith Harris
Crop and Soil Sciences Seminar
Wednesday April 8, 2009, 3:35 PM
Room 2401, Miller Plant Sciences Building
Intensive land management and a warm humid climate have resulted in agricultural and silvicultural
soils with limited fertility and low soil organic carbon in the Coastal Plain of the southeastern United
States.
The addition of a stable carbon source such as biochar may be able to improve fertility while
adding nutrients and sequestering carbon.
Biochars from different feedstocks have different carbon to
nitrogen ratios and nutrient and volatile organic compound concentrations (Gaskin et al.
, 2008) and this
may affect carbon mineralization rates and nitrogen availability.
We amended Tifton soil (Fine‐loamy, siliceous, thermic Plinthic Kandiudults) with Peanut Hull (Arachis
hypogaea) (PN) and Pine Chip (Pinus taeda) (PC) biochar at application rates of 22 and 44 M
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