Biochar: sustainable alternatives for the physical recovery of degraded soils
DOI:
https://doi.org/10.6008/CBPC2179-6858.2022.010.0001Keywords:
Soil ecosystem functions, Sustainability, Environmental degradation, Soil conditionersAbstract
This study evaluated the effects of different concentrations of Biochar applied to a Latossolo with sandy texture under pasture in the Cerrado Biome, Brazil, over six months. A randomized block design with three replications was set up, with the following treatments: T1 = 0.0; T2 = 1.0; T3 = 3.0; T4 = 5.0; T5 = 7.0 and T6 = 9.0 t ha-1 of Biochar applied in the experimental plots (5 x 5 m), with a Native Cerrado area as reference. After the evaluation period, soil samples with the preserved and non-preserved structures were collected at 0.2 m depth to quantify physical parameters, carbon stocks, and soil water storage. The results show that from the application of 3.0 t ha-1 (T3), significant improvements are obtained in flocculation, porosity, density, carbon stocks, and soil water storage, favoring the growth and development of cover crops. Therefore, the use of Biochar is shown to be a fast, cheap, and efficient alternative for the physical and hydric recovery of degraded soils in the Brazilian Cerrado.
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