Weed-spraying on Lake Benmore's Ahuriri arm, delayed because
of unsuitable weather conditions in January, will take place
after the Easter holiday in April.
A helicopter would be used to spray the herbicide diquat in a
gel form, with a tracer dye to judge its dilution and
dispersion.
Land Information New Zealand (Linz) manager of Crown property
Bill Naik said the timing of the spraying was later than
usual because weather and water conditions could
significantly affect its success in lakes.
This year, floods in the Ahuriri River during January and
high winds meant it was unsuitable to carry out the
operation.
Radio announcements will advise lake users when the spraying
is due to take place.
Public notices will also be put in newspapers, on the Linz
website and warning signs put up at public boat ramps during
treatment.
The annual programme to kill lagarosiphon weed is a joint
project between Linz and Meridian Energy Ltd.
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