friend is plagued with a whitefly in his cucumbers and tomatoes.
What should he do?
multiply quickly and so can be difficult to control. Spray with
a pyrethrum based spray such as Target. There is a three-day withholding
period after using this spray, so do not harvest fruit within three
days of spraying. Reapply the spray at five to 10 day intervals
if the infestation is heavy, after that, spray as required.
If the tomatoes and cucumbers
are growing in a glasshouse, a Trappit insect trap can be used.
This is a sticky yellow board containing a phermone that traps the
male whitefly. These are available from hardware stores and garden
by Dr Dan Blanchon from Unitec's Diploma in Sustainable Horticulture and Bachelor
of Resource Management.
with permission from NZOOM Home and Garden content,
from the previous
The views expressed here are not necessarily those of the RNZIH