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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Contribution of tillage systems and crop succession to soil structuring

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Autor(es):
da Silva, Matheus Flavio [1] ; Honorato Fernandes, Mariele Monique [1] ; Fernandes, Carolina [1] ; Rosa da Silva, Amanda Manduca [1] ; Ferraudo, Antonio Sergio [1] ; Coelho, Anderson Prates [1]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Sao Paulo State Univ Unesp, Sch Agr & Veterinarian Sci, Jaboticabal, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: SOIL & TILLAGE RESEARCH; v. 209, MAY 2021.
Citações Web of Science: 0
Resumo

The use of conservational systems of soil cultivation has gained importance due to the need for soil preservation and carbon sequestration from the atmosphere. With the objective of evaluating soil structuring, this study determined the physical attributes and organic carbon contents of a clayey Oxisol in an area of 10 years under four different land uses: i.e., afforestation (AF), no-tillage system with grass-grass succession (corn/corn), no tillage systems with grass-legume succession (corn/Crotalaria juncea L.) and conventional soil tillage system (corn/fallow). The evaluated areas are located in the Cerrado biome of southeastern Brazil. Each area was sampled at 20 points and undisturbed and disturbed samples were collected in the layers of 0.00-0.10 m, 0.10-0.20 m and 0.20-0.30 m. The attributes evaluated were related to soil aggregation and porosity and, due to the structure of dependence of the variables, the data were subjected to multivariate factor analysis. We observed that, after a long period, the no-tillage system promoted soil aggregation and porosity similar to those of the planted forest and superior to those of the conventional tillage system. The type of crop succession in the no-tillage system caused differences in soil structure, and grass-grass succession (corn/corn) promoted better soil structure compared to grass-legume succession (corn/Crotalaria juncea L.). The greater soil porosity generated by the conventional tillage system was limited to the most superficial layer (0.00-0.10 m) and this effect can be considered ephemeral, due to the presence of a large amount of smaller aggregates that, after the operation, can occupy the generated pores. (AU)

Processo FAPESP: 16/22044-8 - Agregação e carbono orgânico de Latossolo Vermelho sob sistemas de cultivo e mata
Beneficiário:Amanda Manduca Rosa da Silva
Linha de fomento: Bolsas no Brasil - Iniciação Científica