Bazı Yabancı Ot ve Kültür Bitkisi Tohumlarının Çimlenmesine Yarpuz (Mentha pulegium L.) Uçucu Yağının Etkileri.

Pennyroyal (Mentha pulegium L.), which is among the medicinal and aromatic plants belonging to the Lamiaceae family, is a plant rich in essential oils. This study was carried out in Malatya Turgut Özal University, Faculty of Agriculture, Plant Protection Department, Weed Science laboratory in 2020 to determine the effect of pennyroyal essential oils at rates doses (0.5, 1.0, 2.0, 4.0, 8.0 and 16.0 µl petri-1) on the germination of seeds of some weeds [(Amaranthus palmeri S. Wats.), (Amaranthus albus L.), (Avena fatua L.) and (Sinapis arvensis L.)] and crops [(Capsicum annuum L.) and ((Triticum aestivum L.)]. it was found that the germination of seeds of all species was fully suppressed in 16 µl petri-1 dose application while the lowest effect (1%) was obtained from 1 µl petri-1 dose application in S. arvensis seed. According to the LD50 and LD90 values in the study, the highest dose was seen in T. aestivum as 3.520 and 7.857 µl petri-1 and the lowest dose was seen in A. palmeri seed as 0.004 and 0.175 µl petri-1 respectively. Low doses were effective in preventing the germination of A. albus and A. palmeri seeds, which are problem weeds in pepper and vegetable fields. It is thought that this result will benefit bioherbicide studies in the future. [ABSTRACT FROM AUTHOR]