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Herbicides behavior in soil and harvest residue in eucalyptus cultivation

Abstract

The use of minimum cultivation as main system for eucalyptus soil tillage, holds large amounts of harvest crop residues on the soil, which directly affects the action of herbicides applied pre-emergence for the weed control. The objective of this research is to evaluate the dynamics of herbicides (flumioxazin, sulfentrazone, isoxaflutole and clomazone) and its effects on weed control when applied on the eucalyptus harvest residue and evaluate the availability of sulfentrazone in different soil and residue management and the eucalyptus selectivity. Experiments will be carried out to evaluate the herbicides release when applied on different amounts and mixtures of eucalyptusfor diferentes simulated rain (0; 10; 20; 35; 50 and 100 mm). The herbicides concentrations in the solution collected after the each will be determined by a LC-MS / MS system. The herbicides release curves from residue to soil will be determined. Experiments will be conducted to assess the weed control efficacy in the presence of the eucalytus residues and simulated rain. For sulfentrazone, due to its special features as the selectivity for eucalyptus, field experiments will be installed for different application conditions and will be assessed the availability in the soil, the weed control and phytotoxicity for different eucalyptus clones. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CARBONARI, CAIO ANTONIO; GIMENES COTRICK GOMES, GIOVANNA LARISSA; KRENCHINSKI, FABIO HENRIQUE; SIMOES, PLINIO SAULO; DE CASTRO, EDICARLOS BATISTA; VELINI, EDIVALDO DOMINGUES. Dynamics and efficacy of sulfentrazone, flumioxazin, and isoxaflutole herbicides applied on eucalyptus harvest residues. NEW FORESTS, v. 51, n. 4, p. 723-737, JUL 2020. Web of Science Citations: 0.
CARBONARI, CAIO ANTONIO; KRENCHINSKI, FABIO HENRIQUE; GIMENES COTRICK GOMES, GIOVANNA LARISSA; SIMOES, PLINIO SAULO; PICOLI JUNIOR, GILMAR JOSE; VELINI, EDIVALDO DOMINGUES. Dynamics in the soil, weed control and selectivity of sulfentrazone for eucalyptus. SCIENTIA FORESTALIS, v. 48, n. 126 JUN 2020. Web of Science Citations: 0.

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