Plant-Parasitic Nematodes Associated with Mango and Relationship to Tree Condition


  • R. McSorley
  • J. L. Parrado
  • S. Goldweber


Mangifera indica, Spiral Nematodes, Sheath Nematode, Ring Nematodes, Stunt Nematode, Reniform Nematode, Host Range, Population Dynamics, Nematode Survey, Weed Hosts


Plant-parasitic nematodes found most frequently in 123 soil samples collected from mango groves in southeastern Florida were Rotylenchulus reniformis Linford & Olveira and Hemicriconemoides mangiferae Siddiqi. Both were found in 87.8% of the samples collected, and averaged 149.5/100 cm of soil and 90.4/100 cm of soil, respectively. Helicotylenchus spp., Macroposthonia spp., and Quinisulcius acutus (Allen) Siddiqi were more abundant in samples from young trees (less than 3 years old) than from older trees (more than 10 years old). When data from all samples were analyzed, tree condition (1-6 scale) was significantly (P = 0.01) correlated with density of H. mangiferae, with r = 0.259. When data from older trees alone were analyzed, this correlation increased (r = 0.419, P = 0.001), and was greatest when using samples having more than 100 H. mangiferae/100 cm of soil (r = 0.586, P = 0.01). Tree condition was not significantly correlated with R. reniformis density; instead, density of th