ASSOCIATIONS BETWEEN ATTRIBUTES OF NITISOLS AND THE CLIMATE OF THE SOUTHERN COAST OF PERNAMBUCO

Authors

  • Laércio Vieira de Melo Wanderley Neves Department of Agronomy, Universidade Federal Rural de Pernambuco, Recife, PE
  • Jean Cheyson Barros dos Santos Department of Agronomy, Universidade Federal Rural de Pernambuco, Recife, PE
  • Valdomiro Severino de Souza Júnior Department of Agronomy, Universidade Federal Rural de Pernambuco, Recife, PE
  • Marcelo Metri Corrêa Academic Unit of Garanhuns, Universidade Federal Rural de Pernambuco, Garanhuns, PE
  • José Coelho de Araújo Filho Research Execution Unit of Recife, Empresa Brasileira de Pesquisa Agropecuária, Recife, PE

DOI:

https://doi.org/10.1590/1983-21252018v31n130rc

Keywords:

Tropical soils. Soil-environment relationship. Xanthization process.

Abstract

Nitisols are livelihood sources of agricultural and socio-economic development in several underdeveloped countries worldwide, including Brazil. Brazilian Nitisols are usually associated with basaltic rocks found in the Southern and Southeastern regions of the country. However, Nitisols derived from basalt also occur on the southern coast of Pernambuco state, a region under full urban, agricultural, and industrial development. Aiming to understand the relationship between climate and attributes of Nitisols from the southern coast of Pernambuco, we performed morphological descriptions, physical and chemical analyzes, iron selective extraction, and soil mineralogy (sand, silt, and clay) for three basaltic soil profiles along a land slope. The results suggest a strong weathering of the profiles due to climate conditions, besides a great loss of basic cations and xanthization process, resulting in the natural genesis of acric Nitisols with yellowish coloration, which has not been yet cataloged for this soil order in the Brazilian taxonomic system. In addition, there is a variation for physical attributes of Nitisols along the slope.

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Published

11-12-2017

Issue

Section

Technical Note