Contribution à la recherche d’effet bio actif de margines d’olives

Abstract

Contribution to research into the bioactive effect of olive margines Despite the effectiveness of chemical pesticides in protecting crops against pests, they threaten health and the environment. The aim of our study is the search for natural compounds of plant origin (secondary metabolites) in the methanolic extract of olive pomace for their use as a bioherbicide replacing synthetic chemical herbicides. The evaluation of the herbicidal effect is carried out through the application of different concentrations of the plant extract on a test species (Hordeum vulgare). Evaluation parameters are monitored relating to the kinetics of seed germination, growth and biomass production (aerial, root) in barley seedlings. The results show two types of effects, the dominant inhibitory effect (total or partial) and the stimulating effect to a lesser degree, the olive pomace extract has a total inhibition of the batches treated at a higher concentration of extract and partial inhibition at lower concentrations. The inhibition at the concentration of 100% is quite strong on the total lengths and the aerial part, however with a slight stimulation of the root part, unlike the rest of the concentrations (from 50% to 6.25%).