Variabilidad del almacenamiento del carbono en suelos cultivados con cacao en la provincia El Oro.

Abstract

With the objective of estimating the variability of carbon sequestered in cultivated soils of cocoa in the lower part of the El Oro province. Were Randomly selected 30 cultivated plots with cocoa in the national rate (n=12) and clone CCN51 (n=18), which formed transects of 30 x 15 meters in each plot where soil samples were taken at a depth of 0-30 cm to those who carried out analysis of sand, silt and clay, bulk density (Da), cationic exchange capacity (CIC), nitrogen (N) and carbon (C). To quantify the amount of C stored, the depth of the sampling was used, giving it to determine the volume of the soil, which is multiplied by the organic C. The results showed a predominance of the sand (> 39%) and silt (> 30%), with little variability in the Da. CIC was superior in national cultivars, as well as organic C (2.2%) and N (0.20%). C levels were 33.096 Mg of C ha-1in CN51 and 45.555 mg of C ha-1 in National without significant differences.