ATRIBUTOS QUÍMICOS DO SOLO INFLUENCIADOS POR SISTEMAS DE MANEJO
2009
Rodrigo Gomes Pereira | Abel Washington de Albuquerque | Jorge Luiz Xavier Lins Cunha | Reinaldo de Alencar Paes | Marcelo Cavalcante
Different tillage systems cause changes in the chemical, physical and biological attributes of soil, requiring modifications in the requirements of fertilization and liming. The aim of this work was to assess the effects of tillage systems on chemical of a Yellow Latosol (Oxisols) Cohesive Dystrophic soil, cultivated with soybean in a single and intercropped system with Brachiaria decumbens. The experiment was conducted at the Center of Agricultural Sciences Federal University of Alagoas for five consecutive years. The treatments utilized were: conventional tillage of the soil, minimum cultivation and no-tillage. The systems of soil preparation not exerted influence on the pH at depths of 0-10, 10-20 and 20-30 cm. Variables pH, OM, K, Ca + Mg and V% showed significant reduction of their average in terms of increased depth of sampling. The consortium soybean vs. B. decumbens causes significant increases in levels of potassium in layers at 0-10, 10-20 and 20-30 cm.
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