Résumé:
The present work is a contribution to the research of biological products that are able to
replace a synthetic products that we import in large quantities. Colossal sums of money are paid
every year to protect our crops from potential biotic or abiotic diseases and improve yield. It is
in this perspective that our scientific approach is based, it’s to prove the herbicidal and
insecticidal power of olive outflows as a local and a biological product on a well-defined
number of spontaneous plants of Mostaganem and white worms specimens collected from the
Bouira region. At the end of this study we have produced significant results. This preliminary
study indicating the interest of olive outflows as a biological and a local material of undisputed
value deserves to be deepened by relying on toxicological, agronomic and socio-economic
studies.