The application of vinasse supplemented with nitrogen fertilizer to sugarcane with stubble maintained on the soil surface improves the physical, chemical and biological soil properties and may result in increased crop yield. The aim of this study was to evaluate residual effects of fertilization on cane plant, as wellas the effect of vinasse application to ratoon cane under different management systems in Conceição da Barra, state of Espírito Santo. The experiment was carried out from 2005 to 2007, on an […]

Crop management systems that favor soil organic matter can improve the available nutrient content for plants and reduce the use of industrial fertilizer. Despite the importance of organic compounds as a P source, little is known about its dynamics in tropical environments. The objective of this study was to identify organic P species present in humic acids by NMR 31P analysis in a fine clay Fluventic Eutrochrepts in Campos dos Goytacazes, in the north of Rio de Janeiro State, Brazil, under […]

The shear tension and soil cohesion are important soil physical properties. They are affected by management systems and the content of Fe, Si and Al oxides in the soil. The effects of different sugarcane management systems on the shear tension, angle of internal friction, soil cohesion, and the contents of Fe, Si and Al oxides in a Cohesive Yellow Argisol were studied in four areas of the Triunfo mill in Alagoas State, Brazil. The treatments consisted of an area cultivated […]

An experiment was carried out to evaluate how mineralized nitrogen from cane trash and urea nitrogen applied to the soil is utilized by sugarcane ratoon. The field experiment was carried out from October 1997 to August 1998 on a Paleudalf soil in Piracicaba, State of São Paulo, Brazil. Four treatments were established: (T1) application of a vinasse and urea mixture over the whole soil area covered with cane trash-15N (crop residue); (T2) application of a vinasse and urea-15N mixture over […]

The aim of this study was to evaluate the effects of vinasse (100 and 200 m3 ha-1) on the degradation and sorption of diuron in Rhodudalf and Haplorthox soiIs. For the degradation study an experiment was carried out in a completely randomized design with a factorial experiment of 2 (soils) x 3 (vinasse: 0, 100 and 200 m3 ha-1), for 120 days. The mineralization was evaluated by radiorespirometry. At the end of the incubation, the original compounds and their metabolites […]

This study was carried out at the Center for Nuclear Energy in Agriculture (CENA), Piracicaba, State of São Paulo, Brazil, with the objective of obtaining information about the effect of different application levels of water/vinasse (100, 200, 400, 600, 800 and 1,000 m3 ha-1) on hydraulic conductivity of soil samples homogeneously packed in columns. A constant head infiltrometer and the instantaneous water profile method were utilized to determine saturated and unsaturated soil hydraulic conductivity, respectively. The increase of the vinasse […]