In this study efficacy of essential and fixed oil of Laurus nobilis L., on controlling Aphis fabae Scopoli that grows on Vicia faba L. (Fabaceae) has been studied by experiments set up in the laboratories of Çukurova University Biology and Plant Protection Departments in 2016-2017. Fixed oils had previously been found to be effective on aphids according to death rate and Abbott test values, but they had also phytotoxic effects on plants. Therefore, the essential oils were preferred in the present study. In essential oil solution applications (prepared with hexane and glycerol monostearate), 100 µL mL-1 and overdoses caused significant phytotoxicity and according to the results hexane significantly caused the death of aphids, therefore, the study was continued without the use of hexane. The effects of hexane-free solutions prepared with glycerol monostearate were found statistically differences (p
Nigella sativa, also known as black cumin, is one of the medicinal plants, its seeds show a wide therapeutic potential, and they are used as spice in different kind of foods. The effects of different herbicides on yield and some yield components of Cameli Black cumin cultivar under Adana ecological conditions were investigated in this experiment that conducted between 2015-2016, 2016-2017 and 2017-2018 growing seasons in the Research and Application Area of Field Crops Department of Agricultural Faculty of Cukurova University. Three different herbicides were applied in nine different applications. Plant height, number of branches, number of capsules in the plant, seed yield and oil ratio differed according to application periods. The highest seed yield was obtained from the treatment of hand hoeing. Malondialdehyde and proline analysis were performed to detect oxidative stress and it was found that hand hoeing caused less stress in plants compared to other treatments. According to the results of the study, it was concluded that hand hoeing instead of herbicide application for the control of weeds in black cumin is more appropriate for yield and ecological perspective.
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