ABSTRACT
This study aimed to evaluate the nutrient content in soils under agroforestry systems managed with no burning and burning of vegetation in a family farm in the community, Benjamin Constant, in the municipality of Bragança-PA. To develop this study were three experimental areas: 1) agroforestry system to cutting and burning of vegetation, 2) agroforestry system without burning and thinning of vegetation and 3) secondary forest 30 years of age. In each area were sampled soil depths 0-5; 5-10; 10-20 cm. In the event of significant differences between treatments, Tukey’s test was used to compare means, considering a 5% level of probability. The highest values of pH, potential acidity and phosphorus were observed in the system managed with burning of vegetation, probably because the experiment found in the early years and the fertilizing effect of the ash is still present in the soil
Keywords:
agroforestry; soil nutrients; family farming.