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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Quantifying above and belowground biomass carbon inputs for sugar-cane production in Brazil

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Silva-Olaya, A. M. [1] ; Davies, C. A. [2] ; Cerri, C. E. P. [3] ; Allen, D. J. [2] ; Mello, F. F. C. [4] ; Cerri, C. C. [4]
Total Authors: 6
[1] Univ Amazon, St 17, Diagonal 17, Cr 3F, Florencia 180002 - Colombia
[2] Shell Technol Ctr Houston, 3333 Highway 6 South, Houston, TX 77082 - USA
[3] Univ Sao Paulo Luiz de Queiroz, Coll Agr, Av Paduas Dias 11, BR-13400970 Piracicaba - Brazil
[4] Univ Sao Paulo, Ctr Nucl Energy Agr, Av Centenario 303, BR-13416000 Piracicaba - Brazil
Total Affiliations: 4
Document type: Journal article
Source: SOIL RESEARCH; v. 55, n. 7, p. 640-648, 2017.
Web of Science Citations: 2

Expansion of sugarcane crop due to the increasing demand for sugar and ethanol can affect both existing soil carbon (C) stocks, and subsequent input of new C from above and belowground biomass, influencing the overall C intensity and C payback times due to the change of land use. We present above and belowground dry biomass production, shoot-to-root ratio (S : R) as well as the net annual C inputs to the soil for sugarcane in different ratoon stages. The selected areas were as follows: (1) recently planted sugarcane area (PC), (2) first year ratoon cane (RC1) and (3) 4-year ratoon cane (RC4), which were established under Typic Quartzipsamments located in north-eastern Sao Paulo State. The sugarcane S : R ratios ranged from 6.6 in PC to 3.4 in RC4, and total sugarcane C inputs from 29.6 to 30.8 Mg C ha(-1). The overall C balance for land use change requires effects on soil C and also C inputs from previous and future land uses. The sugarcane C input was between 3.7 and 4.0 Mg C ha(-1) for each sugarcane cycle of 5 years. When accounting for soil C stock changes and aboveground biomass C losses from the prior land use, the payback times for sugarcane biofuel C debts are reduced by 3, 2 and 1 years for Cerrado wooded, Cerrado grassland and pasture conversions into sugarcane respectively. (AU)

FAPESP's process: 11/07105-7 - Soil carbon stocks on land use - change process to sugar cane production in South-Center Brazil
Grantee:Carlos Clemente Cerri
Support type: Regular Research Grants