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

Table 3

Weather conditions measured at the NT site during the data measuring campaign.

Month	Mean air temp. (°C)	Average of maximum air temp. (°C)	Average of minimum air temp. (°C)	Rain (mm)	Average soil water content (v/v)	Average soil heat flux^*  (W/m^2)
July	22.73	29.20	16.59	12.6	0.26	−0.69
August	24.73	31.51	17.82	24.6	0.25	0.11
September	18.57	24.15	14.30	74.2	0.28	−6.75
October	12.45	17.12	9.73	87.6	0.30	−8.59

Negative values indicate losses of thermal energy toward the atmosphere.