Research Information System
Fresenius Environmental Bulletin, vol.21, no.12 A, pp.3869-3873, 2012 (SCI-Expanded, Scopus)
Agricultural activities play a significant role in the emission of greenhouse gases and global climate change. This study aimed at the determination of effects of different water levels applied in an apple orchard via drip irrigation on soil moisture, and accordingly, on CO2 emissions. The treatments followed the experimental randomized blocks design. Irrigation water was applied twice a week as a certain percentage of cumulative evaporation (SI: 0.25; S2:0.50; and S3:1.00) measured using Class A evaporation pan system during irrigation period. Soil moisture values of 14.82, 15.57 and 17.31% were determined for SI, S2 and S3, respectively. Mean soil CO2 emissions were determined to be 0.152, 0.106 and 0.073 g CO2 m 2 h-1, respectively. The values of soil evaporation (H2O) were determined as 6.39, 8.20 and 3.91 g H2O m 2 h-1, respectively. Soil moisture and evaporation were found to be affected by water levels. In terms of CO2 emissions, significant differences were determined between treatments SI and S3 (p = 0.05). Our results showed that CO2 emissions from soil decreased by increase in soil moisture and amount of water.