Alterações nos atributos químicos de um Argissolo Vermelho-Amarelo sob diferentes sistemas de manejo no Maciço de Baturité, Ceará

• Ano de defesa: 2018
• Autor(a) principal: Silva, Tiago Cavalcante da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Química do solo; Qualidade do solo; Queimada
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/35606

The Soil management under different systems entail changes in the chemical quality of it´s attributes. The intensive use of fire is still common like tool in preparation of agricultural areas directed to farming acting as an important mineralizing agent of the soil. But, it knows that such practice change directly and indirectly the physical attributes, chemical and microbiological of the soil and your nature processes, having as only advantages to the producer your greater fitness and low cost, in compensation create environmental and social impacts. In this context, the objective was to evaluate the influence of management systems on soil cultivated with and without burned, under native wood and agroforestry conversion area, with based on changes in soil chemical attributes in Maciço of Baturité, Ceará. The study was done in November and December 2016 at the Piroás community, in the district of Barra Nova, in Redenção city, Ceará. The experimental design was completely randomized (DIC) in a factorial arrangement of type 4 x 3 constituted of 4 management systems, 3 depths, with 5 repetitions, totalizing 60 experimental units. The áreas evaluated were, A1: native wood, A2: agroforesty conversion, A3: agricultural cultivation and A4: cultivation with burning. Soil samples were collected at the respective depths: 00-10 cm, 10-20 cm and 20-30 cm. After being collected, the samples were conditioned in plastic bags, posteriorly identified and taken to the soil chemistry laboratory of the Department of Soil Science of the Federal University of Ceará (UFC). The following chemical soil variables were analyzed: (N, P, K, Na, Ca, Mg, pH, potential acidity, Al, CE, COT, CTC, V%, SB and m%). The management system with burning presented the highest levels of N, K and decreased the levels of Al in the soil. In the soil of native wood, the macronutrient contents were lower and the values of V% and SB were highest and m% minors when compared to burning. The highest total organic carbon input of the soil was found in the native wood area. The studied areas presented expected values of potential acidity, corroborated by the observed pH values.