Herbicidal effects of Mentha spicata L. essential oils grownunder added carbon dioxide and temperature on thegermination of weed seeds

Herbicides are used extensively in the fight against weeds in order to increase efficiency and quality in agricultural production. However, the potential harm of the herbicides used to the environment and human health is a major problem. In addition, not using herbicides in organic agriculture, which has become increasingly important lately, makes weed control difficult. For this reason, it has become important to find environmentally friendly control methods that can be an alternative to chemical control in the fight against weeds. Developing technology increases research on the use of natural plant materials instead of the use of chemicals that are harmful to plants. In this study, M.spicata (garden mint, Antep mint) and M.canadensis plants, which are important medicinal and aromatic plants, were grown in different temperature (26 0C and 29 0C) and carbon dioxide (CO2) environments and their essential oils were used. In the study, M. spicata and M.canadenesis plants were grown in a fully automated carbon dioxide application greenhouse in 2020 - 2021, and then different doses of the essential oils obtained from these plants (0.5, 1, 2, 4 and 8 μl/petri) were applied to four weeds of wild oats. (Avena fatua L.), giant amaranth (Amaranthus palmeri L.), fallow radish (Hirschfeldia incana L.), purslane (Portulaca oleracea L.) and three cultivated plants, cress (Lepidium sativum L.), durum wheat (Triticum). Durum L.) on the germination of tomato (Solanum lycopersicum L.) seeds were investigated. As a result of the study, the effects of increasing doses of M. spicata and M. canadensis essential oils grown in different temperature and carbon dioxide environments on weeds and cultivated plants were examined. As a result of the study, it was seen that essential oil doses prevented the germination of weed seeds depending on the dose increase. In the study, the doses of essential oils had no effect on cultivated plants, but the highest effects on negative germination in weeds were determined to be 4 μl/petri and 8 μl/petri.