Root knot nematodes
Poor growth, plant decline,
and thinning of the canopy may be symptoms of nematode infestation. Infested
roots have obvious galls and may be brown and stunted.
COMMENTS on disease
The highest populations of
nematodes occur in well-drained sandy soils where previous crops have supported
high levels of nematodes.
Keep plants as healthy as
possible with adequate water and fertilizer to support new roots. No chemical
controls are available for use on existing plants. When replacing plants,
remove all roots and replace soil. Avoid replanting with susceptible species,
or fumigate before replanting.Pittosporum tobira.
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