Effect of Carbonized Biomass Derived from Pruning on Soil Carbon Pools in Pear Orchard
2016
Lee, S., National Institute of Agricultural Sciences, Wanju, Republic of Korea | Lee, J., National Institute of Agricultural Sciences, Wanju, Republic of Korea | Kim, G., National Institute of Agricultural Sciences, Wanju, Republic of Korea | Choi, E., National Institute of Agricultural Sciences, Wanju, Republic of Korea | Suh, S., National Institute of Agricultural Sciences, Wanju, Republic of Korea | Na, U.S., National Institute of Agricultural Sciences, Wanju, Republic of Korea
BACKGROUND: Carbonized biomass is increasingly used as a tool of soil carbon sequestration. The objective of this study was to evaluate soil carbon storage to application of carbonized biomass derived from pear tree pruning. METHODS AND RESULTS: The carbonized biomass was a mobile pyrolyzer with field scale, which a reactor was operated about 400~500℃ for 5 hours. The treatments were consisted of a control without input of carbonized biomass and two levels of carbonized biomass inputs as 6.06 Mg/ha, C-1 and 12.12 Mg/ha, C-2. It was shown that the soil carbon pools were 49.3 Mg/ha for C-1, 57.8 Mg/ha for C-2 and 40.1 Mg/ha for the control after experimental periods. The contents of accumulated soil carbon pool were significantly (P less than 0.001) increased with enhancing the carbonized biomass input amount. The slopes (1.496) of the regression equations are suggested that carbon storage from the soil was increased about 0.1496 Mg/ha with every 100 kg/ha of carbonized biomass input amount. CONCLUSION: Our results suggest that application of carbonized biomass would be increased the soil carbon contents due to a highly stable C-matrix of carbonized biomass. More long-term studies are needed to be proved how long does carbon stay in orchard soils.
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