Measurements of Soil Carbon Dioxide Emissions from Two Maize Agroecosystems at Harvest under Different Tillage Conditions

Figure 7

Effect of the application of a herbicide at the NT site (a) and at the CT site (b). Pretreatment and posttreatment hourly mean values are presented, based on measurements recorded 3 days before and 3 days after the herbicide treatment. Vertical bars indicate the standard errors of the means. (CT = conventional tillage site; NT = no-tillage site.)

(a)

(b)