Effects of a clove oil extract on eggs and second-stage juveniles of Meloidogyne incognita (Kofoid et White, 1919) Chitwood, 1949

Abstract

Trials were carried out in vitro to evaluate the action against Meloidogyne incognita (Kofoid et White) Chitwood of the clove oil extract ABT-EU04® (Xeda International S. A.), whose active principle is derived from buds of Syzygium aromaticum (L.) Merrill et Perry. Three aqueous concentrations of the product (0.125%, 0.25% and 0.50%) were tested on M. incognita unsegmented and embryonated eggs and on second-stage juveniles, both free and included in the egg masses. The experiment, run twice, was carried out in small glass containers in the dark at a constant temperature of 25°C. The data from the two tests were statistically analysed. The clove oil extract stopped the embryogenesis of eggs and showed a complete nematicidal action against second-stage juveniles both free and of the egg masses. These properties make this product an interesting tool for a novel control strategy in nematode pest management.