4.2.4 Organic Carbon
As for the organic carbon dissolved in water (C), the data were higher
in T1 with averages of 9.76, 10.50 and 8.55 mg 1-l, in
February, October and December respectively, reaching values of C
above 19 mg 1-1 in 2000. In treatment T2, the average
carbon values of 6.25, 5.88 and 4.90 mg 1-l, for the
same months, were between 4.9 and 6,2 mg 1-1 (Figure
3H) while at T1, they were between 8.5 and 10.5 mg 1-1(Figure 3G).
It ensures that the amount of C in the water after the implementation of
the project was lower than the situation before the implementation of
the project, in this case, the conservationist practices implemented
contributed to a smaller amount of eroded sediments, a result that
corroborates with Silva et al. (2005) that in their study the organic C
was the constituent found in bigger quantity in eroded sediments,
emphasizing the need for conservationist practices that reduce the
erosive action of rain, maintaining this organic fraction in the soil.