4.3.4 Organic Carbon
Values of organic carbon dissolved in water (C), were higher in T1, with averages of 9.76, 10.50 and 8.55 mg 1-l, in the months of February, October and December, respectively, reaching values โ€‹โ€‹of C above 19 mg 1-1 in 2000. In treatment T2, the average carbon values retrieved were โ€‹โ€‹ 6.25, 5.88 and 4.90 mg 1-l, for the same months, ranging between 4.9 and 6,2 mg 1-1 (Figure 3H); while in T1, the phosphorus content ranged between 8.5 and 10.5 mg 1-1 (Figure 3G).
This confidently demonstrates that the amount of C in the water, after the implementation of the project, was lower than before. Hence in this case, the conservationist practices implemented have contributed to a smaller amount of eroded sediments, which corroborates the results of Silva et al. (2005) since, in their study, the organic C was the main component of the largest part of the eroded sediments, emphasizing the need for conservationist practices that reduce the erosive action of rain, maintaining this organic fraction in the soil.