Akademik Veri Yönetim Sistemi
8. INTERNATIONAL FOOD, AGRICULTURE AND VETERINARY SCIENCES CONGRESS, Konya, Türkiye, 29 - 31 Mayıs 2025, ss.247-248, (Özet Bildiri)
Meloidgoyne species are important pests that cause yield losses in tomato production areas. Although resistant varieties, solarization and pesticides are used in the management of these pests, alternative management strategies are needed due to some disadvantages of these methods. Among alternative management methods, the use of plant extracts is gradually increasing. In this study, it was aimed to determine the potential nematicidal effects of aqueous extracts obtained from the seeds of castor oil plant, Ricinus communis, against Meloidogyne incognita under in vitro and in vivo conditions. Aqueous extracts were obtained by two different methods, hot and cold. The nematicidal activity of hot and cold aqueous extracts was evaluated at different diluted doses (0.5, 1, 2.5, 5, 25, 50, 75 and 100%) against the second instar larvae of M. incognita. In Petri experiments, it was found that the hot aqueous extract did not affect M. incognita negatively at 0.5%, 1%, 2.5% and 5% doses, while the cold aqueous extract showed a high suppressive effect after 72 hours. On the other hand, cold aqueous extracts at doses of 25% and above had a 100% suppressive effect on the second instar larvae and egg hatching of M. incognita within 24 hours. In pot experiments, two different methods (covered and uncovered) and four doses (25, 50, 75 and 100% cold aqueous extracts) were used in Petri media, and it was found that doses of 25% and above of both methods showed a significant suppressive effect on M. incognita. Cold aqueous extracts from R. communis seeds were found to be effective as a potential bio-nematicide for the control of M. incognita. The findings support the use of plant-derived natural products as part of the integrated pest management strategies against nematodes and have the potential to contribute to the development of environmentally friendly alternatives.