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CHEMICAL ATTRIBUTES OF AMAZON FOREST SOIL UNDER CONVERSION FOR DIFFERENT CULTIVATION SYSTEMS IN THE SOUTH OF AMAZONAS, BRAZIL

2023; Hungarian University of Agriculture and Life Sciences; Volume: 21; Issue: 2 Linguagem: Inglês

10.15666/aeer/2102_17671787

1785-0037

F.G. SOUZA, M.C.C. CAMPOS, José Maurício da Cunha, Tiago Martins, Juliana Malta de Assis, E.G. Brito Filho, Wildson Benedito Mendes Brito, D.M.P. SILVA, F.P. OLIVEIRA,

Soil Management and Crop Yield

In the Amazon, the change in land use, with the withdrawal of native vegetation and the implantation of agricultural crops, has caused numerous changes in the chemical properties of the soil, in addition to changing the processes that control the sustainability of its ecosystems.We aim to verify the impacts caused to soil chemical attributes as a function of the conversion of forests to cultivated area with Amazonian species in the municipality of Canutama, southern region of Amazonas.Meshes were established according to the size of the crop and, in each area, samples with a preserved structure were collected at the crossing points of the meshes, at depths of 0.00-0.05;0.05-0.10;and 0.10-0.20 m, with 80 sampling points in each area, generating 240 samples per area and totalizing 960 samples for determination of chemical attributes and organic carbon.The multivariate analysis of soil chemical attributes is adequate to identify the nutrients that present the greatest alteration after the forest/agriculture conversion process.There were more changes in the chemical attributes in the superficial layers (0.00-0.05 and 0.05-0.10m), which demonstrates the importance of above-ground biomass in nutrient cycling.