The correlation of root galling with eggs in root and juveniles in soil of root knot nematodes (Meloidogyne spp.) infecting greenhouse vegetables

E. A. Tzortzakakis

Abstract


Data of root galling and densities of eggs in the roots and juveniles of Meloidogyne spp. in the soil, from microplot greenhouse experiments conducted in Crete, were used to explore the existence of correlations through linear regressions. At low root galling indices, there was a positive strong linear regression between root galling indices and eggs in the roots, and a modest regression between root galling indices and nematode juveniles in the soil. With high root galling indices, the linear relationship was not significant. It is concluded that high root galling indices are not necessarily associated with large numbers of nematode eggs in the roots and juveniles in the soil; such observations should be considered when interpreting results on control of Meloidogyne spp.

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