Insecticidal Action of Malyphos and the Essential Oil of Oregano on the Aphid

In order to check the insecticidal action of the essential oil (Oregano) on the aphid of certain cultures, we carried the tests to compare to them with the synthetic product Malyphos more used by the peasants. For this reason, we treated the plant louses parasitizing the pieces of culture by the doses of this product and the essential oil. In spring-summer or there is a significant number of plant louses and after a controlled time we determines the percentages dead of this parasite in order to obtaining the mortality according to time and dose of the synthetic product and of this oil. The comparison of the aphid mortality between the Malyphos product and the essential oil made it possible to reveal the role of this natural extracts on the limitation of manpower of these parasites and their possible use as plant health naturalness without side-effect on the human health and the environment. Keywords: malyphos, oregano, insecticide, aphi