Effects of different land uses and soil management on soil erosion and water infiltration in an oxisol

Código

XXIII-SBRH0974

Autores

Jullian Souza Sone, Paulo Tarso Sanches de Oliveira, Pedro Alberto Pereira Zamboni, Nelson Otávio da Motta Vieira, glauber altrão carvalho, Alexandre Romeiro de Araújo, Denise Baptalin Montagner, Teodorico Alves Sobrinho

Tema

NEXUS Água-Alimento-Energia: novas perspectivas e abordagens na hidrologia

Resumo

We investigate the influence of integrated crop, livestock, and forestry systems on soil erosion and water infiltration in an Oxisol site located in the Brazilian Cerrado region. The experimental area consists of the following treatments: rotational grazing under variable stocking rate and Nitrogen fertilisations as 100, 200, 300 kg N ha-1 (RG300), continuous grazing under variable stocking rate, continuous cropping under no-till and no-till with 4-year subsoiling, 4-year cropping followed by 4-year pasture in the pasture phase and in the cropping phase, 1-year cropping followed by 3-year pasture in the pasture phase, and 4-year cropping followed by 4-year pasture associated with forestry in the pasture phase and in the cropping phase (CLF-C). We carried out 90 tests using a rainfall simulator with a constant rainfall intensity in plots of 0.7 m2. The stable infiltration rate (SIR) improved 60% in the CLF-C while we observed an improvement of up to 96% in the CLF-C soil loss. Our results also indicate that despite stocking rate increased due to a higher fertiliser concentration, SIR increased 34% in RG300; soil erosion reduced 89% as well. Our study reveals the opportunity to increase agricultural production improving food supply and reducing soil erosion with adequate soil and agricultural management.