The effects of essential oils from two different Satureja hortensis L. genotypes harvested at different times on weed seed germination

Authors : Ayşe Yaşar, Yücel Karaman, Nihat Tursun

Pages : 425-438

Doi:10.37908/mkutbd.1430629

View : 55 | Download : 54

Publication Date : 2024-08-12

Article Type : Research Paper

Abstract :The most important allelopathic effect of essential oils is that they prevent the germination of some plant seeds. In this study, essential oils were obtained from different form periods (beginning of flowering, mid-flowering and end of flowering) of 2 genotypes of S. hortensis plant. Subsequently, different doses of essential oils (0.5, 1, 2, 4, 8 and 16 µl petri-1) were used from weeds such as giant amaranth (Amaranthus palmeri L.), wild oats (Avena fatua L.), purslane (Portulaca oleracea L.), wild mustard (Sinapis arvensis L.) and cress (Lepidium sativum L.), durum wheat (Triticum durum L.) and pepper (Capsicum annuum L.) seeds from cultivated plants were investigated. According to the results of the study, germination was negatively affected due to the increase in the application doses of essential oils, and the highest effect was determined as 2 µl petri-1 in A. palmeri and oleracea seeds, 4 µl petri-1 in A. fatua seeds and 8 µl petri-1 in S. arvensis. For the effects of essential oil doses, the highest LD50 values for the seeds of A. palmeri, P. oleracea, A. fatua and S. arvensis were found to be 0.159, 0.189, 1.043 and 3.087, respectively, while the highest LD90 values were determined to be 0.547, 0.673, 2.895 and 8.398, respectively. As a result of the study, it was seen that essential oils have a significant bioherbicidal effect on weed seeds and it is thought that this method will make a significant contribution to the alternative control of weeds.
Keywords : Baklakekiği, biyo herbisit, uçucu yağ, kültür bitkisi, yabancı ot