Inhibitory effect of Azadirachta indica A. Juss oil. on weeds
Abstract
This work aims to characterize the inhibitory activity of neem oil
(Azadirachta indica A. Juss.) And analyze comparatively their effects. The oil obtained was prepared
concentrations of 0.5, 1.0, 1.5 and 3.0%, the methyl ether as an eluent and tested for germination
seed, radicle and hypocotyl weed of pasture area
grown, malice (Mimosa pudica) and kills pasture (Senna obtusifolia). The oil of the studied species
showed inhibitory activity at intensities that varied depending on the concentration of oil, the recipient plant and the plant factor analyzed. The promoted effect on the germination of seeds and the development of hypocotyl indicated linear trend, while for the radicle was observed quadratic trend. Seed germination and radicle were
factors most strongly inhibited by oil. The intensities of inhibitions were positively associated with concentration, with maximum inhibition observed at 3.0%. Comparatively, kills pasture was the receiving species more sensitive to the effects of neem oil, notably in relation to seed germination, seedling development and when, in that order, differences of up to 52 and 80% were
recorded.
Downloads
Authors retain copyright and grant the Journal the right to the first publication. Authors are encouraged to and may self-archive a created version of their article in their institutional repository, or as a book chapter, as long as acknowledgement is given to the original source of publication. As the Journal provides open access to its publications, articles may not be used for commercial purposes. The contents published are the sole and exclusive responsibility of their authors; however, the publishers can make textual adjustments, adaptation to publishing standards and adjustments of spelling and grammar, to maintain the standard patterns of the language and the journal. Failure to comply with this commitment will submit the offenders to sanctions and penalties under the Brazilian legislation (Law of Copyright Protection; nº 9,610; 19 February 1998).
.jpg)
