Waikato Regional Council holds a resource consent for the application of agrichemicals to air where they may enter water and the coastal marine area within the Waikato region. The consent allows the use of specific herbicides for control of pest plants that cannot generally be controlled only with glyphosate.
Aerial application of agrichemichals to air where it may enter water and the coastal marine area within the Waikato region.
The pest plants to be controlled in 2017-18 include, but are not limited to:
These plants all grow in and around aquatic or marine areas. Herbicides used may enter water.
This Resource Consent permits the use of the following herbicides:
|Active ingredient||Example brand name|
|Haloxyfop-R-methyl||Agpro Haloxyfop 100, Gallant™ Ultra|
|Imazapyr isopropylamnine||Unimaz™ 250 SL|
|metsulfuron-methyl||Agpro Meturon®, Associate® 600WDG, Escort®,|
|Triclopyr trimethylamine salt||Garlon™ 360|
|Polyether modified polysiloxane||Agpro Organosilicone, Pulse penetrant|
Note: Glyphosate use is a permitted activity in the Waikato Regional Plan.
Spraying will be by knapsack, hand spray equipment (e.g. gun and hose/mist blower) or helicopter using low drift nozzles.
Click on your zone to find out if your property is an operational area for 2017-18.
Application may occur at any time during daylight hours, providing weather and tide conditions are suitable. As these pest plants are difficult to control, two to three follow-up applications may occur over the next 12 months. It is unlikely that spraying will occur during game hunting season.
If you would like to be notified when herbicide control will be carried out and/or:
Please email ResourceConsent124871@waikatoregion.govt.nz
Below is a list of scheduled spraying. This list will be updated regularly so please check this page for updates.
Click here for past spraying operations.
|Date||Location||Control type||Herbicide||Map number/s||Target pest plant|
|16 October - 5 November 2018||Pukerimu Lane - Cambridge||Mist Blower and Knapsack||Metsulfuron||66||Yellow Flag Iris|
|16 October - 5 November 2018||Waikato River - Port Waikato to Tuakau Bridge||Gun & hose||Metsulfuron||1 & 3||Alligator weed|
|15 October - 5 November 2018||Waikato River - Tuakau Bridge to Hampton Downs, Whangape Stream & Lake Whangape, Whangamarino Wetland and River and Maramarua River||Helicopter - Boom spray||Metsulfuron||4, 5A, 6, 8||Alligator weed|
|8 October - 29 October 2018||Waikato River - Narrows to Hamilton||Gun & hose or mist-blower||Metsulfuron||68||Alligator weed|
|15 October - 5 November||Waihi Township||Gun & hose and knapsack||Metsulfuron & pulse||46||Yellow Flag Iris|
|8 October - 29 October||Morrinsville Tahuna Road||Gun & hose and motorised knapsack||Metsulfuron & pulse||24||Yellow Flag Iris|
|11 September - 21 October||Waiti Road||Gun & hose and Mist Blower||Metsulfuron||74||Yellow Flag Iris|
|17 September - 29 October||Lake Whangape Stream, Whangape Stream and Whangamarino Wetland||Gun & hose and Mist Blower||Metsulfuron||6 & 8||Alligator weed|
|17 September - 29 October||Waikato River, Port Waikato to Ngaruawahia||Gun & hose and Mist Blower||Metsulfuron||1, 3, 4, 5a, 5b, 9, 10a, 10b, 11a||Alligator weed|
|28 August - 17 September||Waikato River, Port Waikato to Ngaruawahia||Gun & hose and Mist Blower||Metsulfuron||1, 3, 4, 5a, 5b, 9, 10a, 10b, 11a||Alligator weed|
|2 August - 23 August||Piako River||Gun & hose||Haloxyfop||21||Spartina|
|2 August - 23 August||Waikato River from Tuakau Bridge to Port Waikato||Gun & hose||Metsulfuron||1, 3||Alligator weed|
|9 July - 30 July 2018||Piako River downstream from Ngatea||Mist Blower||Haloxyfop||21||Spartina|
|9 July - 30 July 2018||Waihou River downstream from Turua||Mist Blower||Haloxyfop||21A||Spartina|
|9 July - 30 July 2018||Waikato River from Tuakau Bridge to Port Waikato||Gun & hose||Metsulfuron||1, 3||Alligator weed|
|8 June - 30 June 2018||Waihou River, Turua area||Gun & hose||Haloxyfop||21A||Manchurian wild rice|
|5 June - 26 June 2018||Waikato River delta area||Gun & hose||Metsulfuron||1||Alligator weed|
|1 June - 22 June 2018||State Highway 26 Puriri||Gun & hose||Haloxyfop||52||Manchurian wild rice|
|31 May - 12 June 2018||Te Mawhai Road||Knapsack||Imazapyr||56||Water Poppy|
|31 May - 12 June 2018||Mystery Creek||Knapsack||Metsulfuron and or/Imazapyr||25||Alligator weed|
|31 May - 20 June 2018||Te Rore||Gun & Hose/Knapsack||Metsulfuron and or/Imazapyr||26||Alligator weed|
|21 May - 11 June 2018||Horahora||Gun & Hose||Haloxyfop||28||Manchurian wild rice|
|15 May - 20 June 2018||Whangape Stream and Lake Whangape||Gun & Hose/Knapsack||Metsulfuron and Imazapyr||6||Alligator weed|
|22 May - 12 June 2018||Golden Cross Road||Knapsack||Metsulfuron||50||Wild ginger|
|24 April - 30 April 2018||Whangamarino River and wetland||Helicopter||Metsulfuron||8||Alligator weed and yellow flag iris|
|23 April - 4 May 2018||Horahora||Gun & Hose||Haloxyfop||28||Manchurian Wild Rice|
|23 April - 14 May 2018||Te Pahu||Knapsack||Metsulfuron||29||Sagittaria|
|23 April - 14 May 2018||Te Kowhai||Knapsack||Metsulfuron||17||Senegal Tea|
|23 April - 14 May 2018||Te Mawhai Road||Gun & Hose||Imazapyr||56||Water Poppy|
|15 April - 4 May 2018||Te Otamanui Lagoon||Knapsack||Metsulfuron||15||Alligator weed|
|19 April - 7 May 2018||Cambridge Golf Course||Knapsack||Imazapyr||63||Water poppy|
|9 - 20 April 2018||Waikato River delta area||Helicopter||Metsulfuron||1||Alligator weed|
|7 - 23 April 2018||Adjacent to the Waihou River, Turua – between Wharepoa Road and Bond Road||Helicopter||Haloxyfop||21A||Manchurian wild rice|
|7 - 14 April 2018||Whangamarino River and wetland||Helicopter||Metsulfuron||8||Alligator weed, yellow flag iris|
|27 - 29 March 2018||Te Otamanui lagoon at Te Kowhai||Helicopter||Metsulfuron||15||Alligator weed|
|26 March - 6 April 2018||Waihou River downstream from Turua on true right||Gun & hose||Haloxyfop||21A||Spartina|
|22 March - 13 April 2018||Waikato River downstream from Narrows||Gun & hose||Metsulfuron||68||Alligator weed|
|19 March - 9 April 2018||Waikato River from Meremere to Tuakau, Lake Waikare, Whangamarino River and wetland||Helicopter||Metsulfuron||5A, 4, 3, 7, 8||Alligator weed|
|9 - 30 March 2018||Waikato River from Ngaruawahia to Waikato delta, Lake Whangape, Lake Waikare and Te Onetea & Whangape Streams||Gun & hose||Metsulfuron||1, 3, 4, 5A, 5B, 6, 7, 9, 10A, 10B, 11A||Alligator weed|
|12 - 18 March 2018||Waihou River upstream from Turua||Gun & hose||Haloxyfop||21A||Manchurian wild rice|
|5 - 16 March 2018||Waihou River||Mistblower||Haloxyfop||21A||Spartina|
|27 February - 20 March 2018||Marokopa||Knapsack||Metsulfuron||59||Alligator weed|
|27 February - 20 March 2018||Taumatamoana, Potaka Station (Harihari)||Knapsack||Metsulfuron||41||Alligator weed|
|27 February - 20 March 2018||Taharoa Ironsands||Gun & hose and knapsack||Metsulfuron||57||Alligator weed|
|27 February - 20 March 2018||Te Kowhai North, Te Otamanui Lagoon||Aerial, Amphibious||Metsulfuron||15||Alligator weed|
|23-24 February 2018||Lakes Rotoroa & Rotokaeo||Gun & hose||Metsulfuron||71 & 72||Parrot's feather, yellow flag iris|
|19 February - 5 March 2018||Ruahorehore Stream, Waihi||Knapsack||Metsulfuron||18||Alligator weed|
|11 - 25 February 2018||Piako River downstream from Pipiroa||Mistblower||Haloxyfop||21||Spartina|
|10 - 25 February 2018||Waihou River, upstream and downstream of Turua||Gun and hose & mistblower||Haloxyfop||21A||Manchurian wild rice & spartina|
|9 February - 2 March 2018||Lake Whangape||Helicopter||Metsulfuron||6||Alligator weed|