Obtaining and study of biodegradable granules loaded with oxamyl as eco-friendly preparation for Globodera rostochiensis control

Abstract

Potato cyst nematode (PCN) poses a great challenge for potato cultivation throughout the world. Being a rather difficult parasite due to a number of its physiological features, specifically a long-term viability of the eggs, PCN causes drastic damage to worldwide agriculture. Development of long-acting preparations deposited with nematicidal ingredients could be a novel prospective approach for PCN management. In this work, composite granules based on polycaprolactone and montmorillonite (PCL/MMT) (100:0; 90:10; 75:25; 50:50) were studied as carriers for oxamyl nematicide (~ 10 wt.% of granules). It was shown that the obtained granules are able to maintain the activity of oxamyl for 20 days and facilitate its gradual release. The maximum release of oxamyl was noted for PCL/MMT 50% granules and amounted to 82.6 µg/ml. The nematicidal effect of PCL/MMT 50% granules with oxamyl against G. rostochiensis has been demonstrated on potato variety "Krasnoyarskiy ranniy".