Carbono orgânico total no solo em áreas com pastejo bovino em Lages-SC

Abstract

Intensive agricultural production has become the subject of debate due to its adverse effects on the environment, especially greenhouse gas emissions and climate change. Thus, one way to contain carbon (C) emissions to the atmosphere is to integrate soil and pasture management studies with animal production, while allowing the accumulation of C in the soil. This study aimed to finish the theories of total organic carbon (TOC) in the soil and to evaluate the relationship between the presence of cattle in grazed areas. For this, the work was carried out in Lages - SC, which has a humid mesothermal climate and mild summers, classified as Cfb in the Köeppen Climate Classification. The sample areas were divided into paddocks with and without cattle grazing, with four replications each. Soil samples were collected at depths of 0 - 5, 5 - 10 and 10 - 20 cm, which were dried, macerated and sieved to test TOC levels through dry protection. The evaluated managements did not have significant differences (p>0.05) according to ANOVA. In the analyzed period there was no significant change in the C contents in the soil. However, additional analyzes such as assessment of carbon stocks are required to fully understand the relationship between management practices and soil C content.