More Dunstan weed control to begin shortly

Waitaki news
Monday, April 20, 2015

Waitaki MP Jacqui Dean said she wanted to see the Lagarosiphon problem at Lake Dunstan brought under control as soon as possible, with another round of control work set to begin shortly.

“I’ve been in discussions with Land Information minister Louise Upston raising concern over the lake weed and she advises that aerial herbicide spraying of Lake Dunstan’s high value areas could begin as soon as next month.

“The most recent control work carried out by Land Information New Zealand was on December 15, with the next round of aerial spraying scheduled for May or June, with specific dates dependent on the weather.

“I’m pleased to hear that this control work will begin shortly because I want the lake weed problem brought under control quickly so that locals and visitors can continue to enjoy the lake.

“And while LINZ advises that aerial herbicide remains the most efficient and cost-effective method of control, I’m also heartened to hear that LINZ is reviewing their approach to see if there is anything else that can be done.”

High value areas (HVAs), which are a priority for weed control, are parts of the lake most commonly used for recreational purposes as set out in the Otago Pest Management Strategy, Mrs Dean said.

“Several of these area, for example around the Butcher’s Drive boat ramp and in front of Old Cromwell town, were unable to be treated in recent operations due to the weed being covered in silt and algae which limited the herbicide’s effectiveness.

“I understand that they will be a priority during the next round of spraying and I am pleased to hear this.”