EVALUATION OF CARBON STOCK IN INTEGRATED PRODUCTION SYSTEMS WITH MACAÚBA

Integrated production systems are a viable option to promote the sustainability of agricultural activities, providing an increase in soil carbon stocks. The objective of this work is to evaluate the soil carbon stock between different production systems with macaúba palm (Acrocomia aculeata). The experiment was carried out at UAT-SIP/UFVJM. Four production systems were installed at the UAT: MM-monoculture of the macaúba palm tree spaced 6m between rows and 4m in the row; SIFD-Integrated system for the production of macaúba and annual crops in double row rows of macaúba in the spacing 6m x 4m spaced 15 m between the rows; SIFT-Integrated system for the production of macaúba and annual crops in triple row rows of macaúba in the spacing 6m x 4m spaced 15 m between the rows; and MA- monoculture of annual crops. Each system represented an experiment and was installed in a randomized block design with 4 blocks. To estimate the soil carbon stock in each system,
Samples were collected for determination of SD and CO at depths 0-5 cm, 5-10 cm and 10-30 cm. The sampling points in SIFD and SIFT are performed from a transect that includes samples taken in the macaúba row (FM), between rows (EF) and between rows (ER). The soil organic carbon stock (SOC) was estimated by the equation: SOC= (COxDSxE)/10. One year after implementing the different systems, a variation in SOC was observed. SIFD-EF was the site with the highest SOC at depth 0-5cm, 21.6 Mg.ha -1