—The propose of this study was to evaluate CO2 flux
and accumulative CO2 absorbance of the first ratoon cane by
using Eddy Covariance Technique. First ratoon cane was
produced at Cane and Sugar Industry Promotion Center,
Kanchanaburi province, from June 2010 to April 2011. From
the results, the CO2 flux was fluctuated from -2.4 to 2.8
mgCO2m-2s-1. The negative values showed in the day time and it
means CO2 was absorbed by plant via photosynthesis. On the
other hand the positive values means CO2 was emitted by plant
and soil respiration in night time. Different CO2 flux was
observed in each growth stages. CO2 flux was lower at
germination stage (June 2010) and the total CO2 absorbance at
this stage was 63.1 gCO2m-2. CO2 flux reached its maximum at
stalk elongation stage (September 2010-January 2011) and total
CO2 absorbance at this stage was 2,448.3 gCO2m-2. Totally, CO2
absorbance for the entire period of experiment was 4,300.4
gCO2m-2. Carbon use efficiency of the 1st ratoon cane was 2.13
tyield/tCO2. From the results, it was concluded that the 1st
ratoon sugarcane ecosystem was a CO2 source during night
hours and a CO2 sink during the day time. Finally, for the entire
growing season the 1st ratoon cane system is the sink of CO2.
—Carbon use efficiency, eddy covariance
technique, first ratoon cane.
T. Pakoktom and N. Chaichana are with the Department of Agronomy,
Faculty of Agriculture at Kamphaeng Saen, Kasetsart University,
Kamphaeng Saen Campus, Thailand (e-mail: firstname.lastname@example.org;
J. Phattaralerphong is with the Faculty of Natural Resource and
Agro-Indrustry, Kasetsart University, Chalermprakiat Sakon Nakorn,
Thailand (e-mail: email@example.com).
J. Sathornkich, is with the Department of Horticulture, Faculty of
Agriculture Kasetsart University, Bangkok, Thailand (e-mail:
Cite:Tiwa Pakoktom, Nongpat Chaichana, Jessada Phattaralerphong, and Jate Sathornkich, "Carbon Use Efficiency of the First Ratoon Cane by Eddy Covariance Technique," International Journal of Environmental Science and Development vol. 4, no. 5, pp. 488-491, 2013.