Grass carp used to keep weeds at bay


The Department of Conservation has approved a plan to release grass carp into irrigation canals as a way of controlling weeds.

North Otago Irrigation Company (NOIC) chief executive Robyn Wells said she was pleased DOC had recognised that the use of grass carp in the company’s canals was an appropriate solution for weed control.

“Of all the options open to us – manual labour, chemicals, dredging and mechanical – we always felt that use of fish was the most environmentally elegant,” she said.

“Our intention is to release the fish into two of our three canals this year.

“These will be our Otago and Canterbury canals, which are located adjacent to Smillies Rd.”


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