Chemical attributes of traditional agriculture and Caatinga managed at different depths in an Inceptisol

• 發表在: Revista Brasileira de Engenharia Agrícola e Ambiental
• Main Authors: Osvaldo N. de Sousa Neto, Nildo da S. Dias, Raniere B. de Lira, Eulene F. da Silva, Ana L. L. Ferreira, Jair J. R. de Freitas
• 格式: Article
• 語言: 英语
• 出版: Universidade Federal de Campina Grande
• 主題: qualidade do solo; pH; bases trocáveis; semiárido
• 在線閱讀: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000100050&lng=en&tlng=en

ABSTRACT The objective of this work was to evaluate changes in the chemical attributes of an Inceptisol in two areas of sustainable management of the Caatinga Biome and a conventional tillage, compared with the native forest. The areas were managed in the following way: in areas under sustainable management, the Caatinga was thinned in a savanna system (1), and in the other area, the Caatinga was thinned in strips (2); the area under conventional tillage was burned, plowed and harrowed (3), and the native forest (4). The following chemical attributes were analyzed: pH, electrical conductivity, Ca2+, Mg2+, H + Al, P, Na+, K+ and soil organic matter (SOM), calculating CEC and base saturation. The treatments were evaluated using multivariate analysis, at different depths up to 0.52 m. In the Caatinga areas thinned in a savanna system and in strips, the greater availability of exchangeable bases and SOM occurs close to the depth of 0.20 m and, in the area with traditional agriculture, it is limited to 0.10 m. In the area thinned in a savanna system, sodium showed a negative correlation with the other elements.