Akademik Veri Yönetim Sistemi
8. INTERNATIONAL FOOD, AGRICULTURE AND VETERINARY SCIENCES CONGRESS, Konya, Türkiye, 29 - 31 Mayıs 2025, ss.249-250, (Özet Bildiri)
Tomato is an significant agricultural crop widely grown worldwide. Root-knot nematodes are an considerable pest causing yield losses in tomato production areas. Although pesticides are widely used to management these nematodes, the residue potential of these chemicals and their toxic effects on nontarget organisms pose significant risks to environmental sustainability. Therefore, as an alternative management method, the relationship between fertilizers and plant parasitic nematodes was investigated and the potential of these fertilizers to be used within the scope of integrated pest management was investigated. In the study, the suppressive effects of seven doses (25, 50, 100, 200, 400, 800, 800 and 1600 ppm) of five different nitrogen fertilizers (urea ammonium nitrate (UAN), nitric acid, ammonium sulphate, calcium nitrate and urea) on Meloidogyne chitwoodi were investigated directly in Petri media and in potted conditions on Tueza F1 sensitive tomato cultivar. In vitro results showed that all doses of urea, ammonium nitrate (UAN), nitric acid and ammonium sulphate showed 100% suppressive activity in 72 hours, while calcium nitrate fertilizer showed 80% suppressive activity only at 1600 ppm. However, no suppressive effect on nematodes was observed at seven doses of urea fertilizer. In the pot experiment, a significant suppressive effect was found at doses of 50 ppm and above of UAN fertilizer and 100-1600 ppm doses of ammonium sulphate and nitric acid fertilizers. Calcium nitrate fertilizer had a suppressive effect of more than 80% at doses of 800-1600 ppm, while urea fertilizer, which had no effect in Petri medium, showed a suppressive effect exceeding 80% at doses above 200 ppm in the pot experiment. The results obtained indicate that the application of nitrogen fertilizers at certain doses may be a potential control method in the management of M. chitwoodi, and this effect may be related to the triggering of defense responses in the plant and antagonistic effects of soil microbiota against nematodes.