Insecticide Activity Study Of Essential Oils Of Daucus Carota (L.) Ssp. Carota and Chenopodium Ambrosioïdes (L.) On White Larvae of Melolontha Melolontha (Published)
In the goal of natural alternative research of insecticide properties and limited risks by environment, extracted oils from Daucus carota (L.) ssp. carota and Chenopodium ambrosioïdes (L.) have been tested on white larvae of Melolontha Melolontha. This study has two essays: the first has been realized in petri boxes where larvae haves been made in contact with different oil concentrations of Daucus carota (L.) ssp. carota and Chenopodium ambrosioïdes (L.). The second has been realized on the basis of the first essay so as only concentrations which have good results tested in pots containing soil issued of natural milieu. During all the period of exposition doses LC50 and LC99 have been determined as well as the lethal times, required for the death of 50% (LT50) and 90% (LT99) white larvae exposed to different concentrations of essential oils. We notice that essential oil of Chenopodium ambrosioïdes (L.) leads to very significative insecticide effect on Melolontha Melolontha larva rather than on Daucus carota (L.) ssp. carota.
STUDY OF THE INSECTICIDAL ACTIVITY OF THE ESSENTIAL OIL OF CHENOPODIUM AMBROSIOÏDES (L.) (CHENOPODIACEAE) ON SITOPHILUS ORYZAE (COLEOPTERA: CURCULIONIDAE) (Review Completed - Accepted)
Our study is about the valorization of essential oil of Chenopodium ambrosioïdes (L.) as botanical insecticide on Sitophilus oryzae during the storage of Triticum turgidum (L.) subsp. Durum (Desf.) Husn. In fact, the insecticide activity of essential oil extracted by hydrodistillation from that plant has been tested by fumigation on the grains of Triticum turgidum (L.) subsp. Durum (Desf.) Husn. after seven concentrations at the temperature beginning from 24 to 28°C and humidity of 70%. The same concentrations have been tested on S. oryzae by fumigation. During all the period of exposition the LC50 – and LC99 doses have been determined and, also, the lethal times required for the death of 50% (LT50) and 99% (LT99) of adults exposed to different concentrations of essential oils. We notice that essential oil presents no effect on the germination of grains of Triticum turgidum (L.) subsp. Durum (Desf.) Husn., on the contrary, it makes a very significant insecticide effect on S. oryzae.