PHYSICAL-HYDRAULIC PROPERTIES OF AN ULTISOL UNDER NO-TILLAGE AND CROP-LIVESTOCK INTEGRATION IN THE CERRADO

• Autor(a) principal: Barbosa, Leovânio Rodrigues
• Data de Publicação: 2022
• Outros Autores: Souza, Henrique Antunes de, Oliveira, Flávio Pereira de, Nunes, Luis Alfredo Pinheiro Leal, Leite, Luiz Fernando Carvalho
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Caatinga
• Texto Completo: https://periodicos.ufersa.edu.br/caatinga/article/view/9449
• topic: Água no solo. Resistência do solo. Sistemas integrados.; Water in the soil. Soil resistance. Integrated systems.

Light soils are more susceptible to degradation and need to be exploited in a conservational manner, thus avoiding rapid degradation. The objective of this study was to evaluate the physical-hydraulic properties of an Ultisol under no-tillage and crop-livestock integration in the Cerrado of eastern Maranhão state, Brazil. The evaluated managements were one area under no-tillage system for fourteen years (soybean/millet) and three areas with different histories of adoption of the crop-livestock integration (CLI) system under no-tillage (soybean/millet), with the difference being: times of entry with CLI (2, 4 and 8 years), as well as a native Cerrado area, considered a control. Soil collection was carried out in June 2018 at depths of 0.00-0.10, 0.10-0.20, 0.20-0.30 and 0.30-0.50 m. Disturbed and undisturbed samples were collected to determine the following variables: bulk density, porosity, resistance to penetration, retention curve and available water capacity. Data were subjected to the calculation of means and confidence intervals (95%). The area with a recent history of crop-livestock integration showed better density, porosity, resistance to penetration, water storage capacity and available water. No-tillage for fourteen years leads to high resistance to penetration, less porosity and low water storage capacity. The integrated system (CLI) improves the quality of the physical-hydraulic properties and the values found are similar to those observed in an area under native vegetation.