SOIL LOSSES IN AGRICULTURAL AREA OF THE SEMI-ARID

José Falcão Sobrinho; Francisca Edineide Lima Barbosa

doi:10.4215/rm2022.e21020

José Falcão Sobrinho Vale do Acaraú State University, Sobral (CE), Brazil http://orcid.org/0000-0002-7399-6502
Francisca Edineide Lima Barbosa Vale do Acaraú State University, Sobral (CE), Brazil http://orcid.org/0000-0002-1342-8263

DOI: https://doi.org/10.4215/rm2022.e21020

Abstract

Soil losses caused by erosion are a worldwide problem that brings significant environmental and economic impacts and reduces arable land. Soil conservation practices are efficient alternatives to reduce erosion and maintain crop productivity. The objective was to compare soil losses by water erosion in different agricultural managements in a rural community in the semi-arid region of Ceará. The design used was completely randomized with a factorial scheme (Treatment x period), consisting of four treatments: CNCP - Graviola planting in contour lines associated with stone strings; MACV - Graviola planting downhill, keeping the ground cover; CN - Graviola planting in a contour curve and MASV - Graviola planting downhill, without ground cover, with the period represented by the dates of collection of variables. The height and diameter of soursop trees were analyzed; soil moisture; precipitation and slope. The CNCP conservation management provided the lowest soil losses, while the MASV the highest losses, suggesting that the implementation of conservation practices in semi-arid agriculture reduces soil losses from water erosion and contributes to the sustainability of agricultural production in areas rural areas in the semi-arid region of Ceará.

Keywords: Water Erosion, Runoff, Soil Degradation, Soil Conservation Practices.

Author Biographies

José Falcão Sobrinho, Vale do Acaraú State University, Sobral (CE), Brazil

Coordinator of the Post-Graduation Program in Geography (Master in Geography) and Associate Professor of the Academic Master's Course in Geography at the Human Sciences Center of the Vale do Acaraú State University/UVA, Post-doctoral fellow in Geography at the Federal University of Ceará ( UFC). Master in Geography from the Federal University of Uberlândia (UFU - 2001) and PhD in Physical Geography from the University of São Paulo (USP - 2006). Leader of the Rede de Pesquisa e Extensão do Semiárido/RPES (Semiarid search na extension network). Member of the Network of North and Northeast Researchers of Geography/RENNEGEO. In the research, he mainly worked in the semi-arid environment, emphasizing the erosive processes, the technologies of coexistence with the environment and research on the relief. Instead, he emphasizes the theoretical and methodological bases of Physical Geography. In the extension activities he develops in public schools, coordinates projects of Science Fairs and develops projects in communities. He is a member of the editorial committee of the William Morris Davis Magazine-Geomorphology Magazine and chief editor of the Semiarid Geography Series.

Francisca Edineide Lima Barbosa, Vale do Acaraú State University, Sobral (CE), Brazil

Post-doctorat en géographie, boursier PNPD/CAPES
Doctorat en Sols et Nutrition Végétale de l'Université Fédérale de Ceará/UVA

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