Papers

Summary

This work evaluated the impact of the preparation in different configurations on the immediate emissions of CO2 of the soil, using two of the main preparation systems used in agricultural areas: disc plow followed by leveling grid (conventional) and scarifier conjugated with reducer roller (reduced) . The results indicated higher emissions induced by the conventional tillage, disc plowing followed by leveling grid, in a total of 260.7 grams of CO2 m^-2 in the period of 14 days of study. On the other hand, the lowest emissions were observed after preparation with a scarifier without the use of the dewatering roll, of 82.3 grams of CO2 m^-2. Soil temperature and humidity factors were not related to variations in soil CO2 flow, but time was an important factor in the prediction capacity of the emission after soil preparation.