Development of insecticidal compositions based on pyrethrins and natural benzodioxolanes contained in vegetable and essential oils

The damage caused by insect pests, according to the UN Food and Agriculture Organization, annually accounts for 20-25% of the potential global harvest of food crops. To expand possible pest control measures, the work on the development of insecticidal compositions was carried out. It included natural pyrethrins contained in Dalmatian chamomile (Pyrethrum cinerariaefolium Trev), synergistic substances from the benzodioxolane group contained in vegetable and essential oils (sesame, kanang and anise). To prove the effectiveness of these insecticidal compositions, the working formulations based on the compounds were developed. Then their biotesting was done. The development of biologically active compositions was carried out experimentally, based on docking data, in the laboratory of organic synthesis of the FGBNU VNIIF. The biotesting was carried out on samples of common beans (Phaseolus vulgaris Linnaeus), a medium-ripened variety, infected with insect pests (greenhouse whitefly - Trialeurodes vaporariorum) by spraying with working solutions of plants, followed by calculating the ratio of the number of dead insects to the initial number of live insect pests on day 3. In the working solution No. 6 (composition: Pyrethrins FI (10%), Pyrethrins FIII (10%), Pyrethrins FIII (10%), Pyrethrins FIV (15%), Sesame oil (55%)) 23% insect death was observed. In the solution No. 7 (composition: Pyrethrins FI (10%), Pyrethrins FIII (10%), Pyrethrins FIII (15%), Pyrethrins FIV (15%), Sesame oil (50%)) there was 30% insect death. In the the solution No. 8 (composition: Pyrethrins FI (10%), Pyrethrins FII (15%), Pyrethrins FIII (15%), Pyrethrins FIV (15%), Sesame oil (45%)) we observed 36% insect death. So, the results of biotesting prove the effectiveness of the developed compositions and can be used as a promising basis for the creation of new means of protecting agricultural plants from insect pests.