The physical characterization of two typical Coastal Tableland soils (Yellow Latosol-YL and Gray Argisol-GL) of the State of Bahia, Brazil, was carried out in 2001 and the citrus root system in such soils was evaluated in order to determine attributes that best identify the cohesive layer. The first four horizons in each soil were sampled for analysis of particle size distribution, soil bulk density, total porosity, macroporosity, microporosity, and saturated hydraulic conductivity. Soil resistance to penetration and critical humidity of […]

To verify if the use of phosphate fertilizer and polluted irrigation water increased the levels of heavy metals in soil, samples of one Yellow Podzolic and two Yellow Latosol soils treated with phosphate fertilizers since 1968, and a Cambisol irrigated with water from the Paraíba do Sul River since 1978, cultivated with sugarcane in Campos dos Goytacazes, RJ, were analysed for total contents of Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn. The results from the soils that received […]

The effects of applying micronutrients, cattle manure, lime and splitting application of NPK fertilizers on the yield and the incidence of witches’ broom disease of cacao caused by Crinipellis perniciosa were determined in two experiments carried out on structured Terra Roxa soil (TR) and Yellow Latosol (LA), in Pará State, from 1988 to 1993, after the slash and burn of the forest. The hybrid (Sca 6 x Be 10) cacao crop was introduced utilizing banana (Musa spp.), as temporary shading, […]