Effect of some phenolic compounds on survival, infectivity and population density of Meloidogyne javanica in mungbean

S. S. Shaukat, I. A. Siddiqui


Effect of various concentrations of three phenolic compounds including benzoic acid, p-coumaric acid and caffeic acid were tested against Meloidogyne javanica under laboratory and greenhouse conditions. Phenolic acids at 2000 ppm produced significant mortality of M. javanica juveniles in vitro. Caffeic acid was more effective against juveniles compared to benzoic acid or p-coumaric acid. Soil application of caffeic acid at 10 pg/g caused complete inhibition in germination of mungbean seedlings. Plant height and fresh weight of shoots progressively decreased with increasing concentrations of the phenolic compounds in soil. However, with increased concentrations of phenolic acids, there was a corresponding decrease in nematode population densities in soil and root and subsequent galling due to M. javanica.

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