Abstract
The use of plant extracts in the fungi control can be an alternative to the use of chemicals. This work has the purpose to test the efficiency of the aqueous extract obtained from leaves of Nerium oleander (espirradeira) on seed germination of Peltophorum dubium (canafistula), as well on seedling vigour and seed sanity. Nine treatments were tested, with three concentrations of extract: 0, 50 and 100%, and three assay times: 15, 30 and 45 minutes. It was found that the aqueous extract of N. oleander was not effective for controlling the pathogens associated with P. dubium seeds, and there is an increase of fungi incidence. However, the aqueous extract of N. oleander helped seed germination and vigour of the resulting seedlings and the most infected seeds were the ones showing better germination and development.
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