Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Public support needed to keep water free of banned weeds

5 May 2014

Public support needed to keep water free of banned weeds

The Ministry for Primary Industries (MPI) and Auckland Council are asking residents to report any fresh sightings of two banned and highly destructive weeds - water hyacinth and salvinia.

Both weeds are present in the Auckland region and are known for growing rapidly to form large dense floating mats on ponds, drains, lakes and still waters in swamps.

“Water hyacinth and salvinia are among the world’s worst weeds,” says MPI Response Manager Emmanuel Yamoah.

Both plants grow very quickly. Water hyacinth is able to double its population size in as little as 12 days, while salvinia only needs about a week.

“These weeds have the potential to cause huge damage to our waterways, native aquatic plants and fish. They can clog waterways, making almost all water activities impossible and increasing the danger of drowning to humans and livestock. The weeds also have adverse impacts on hydro-electricity generation and irrigation.”

Dr Yamoah says MPI and the Auckland Council have an eradication programme in place for water hyacinth and salvinia.

“We need to know where these weeds are so we can wipe them out, so the assistance of the general public is crucial to the success of the eradication programme.”

He says many home and farm ponds around Auckland have been cleared of the noxious weeds, thanks to calls from concerned owners and residents.

“Anyone who sees any of these weeds, or suspects they may be present, should report it to us on 0800 80 99 66. MPI contractors will visit the site and remove the weeds free of charge if they find them.”

It is illegal under the Biosecurity Act 1993 to share, grow or sell unwanted and notifiable organisms.

Background information about salvinia and water hyacinth
Salvinia is a small, free-floating aquatic fern with branched, horizontal stems that lie just below the water surface. The upper surface of the leaf is covered with distinct white hairs. It has a root-like structure underneath each leaf pair and as the plant matures, these ‘roots’ resemble wet hair. The plant grows usually up to 30cm long.

Water hyacinth is a floating aquatic perennial, with distinctive bladder-like swollen leaf petioles giving buoyancy. It has shiny rounded leaves with thick masses of feathery dark roots that can reach 2.5m in length. A single flowering stalk with a cluster of mauve-blue flowers, each with a yellow spot, is produced above the foliage. Plants produce floating horizontal stems from which new plants arise.

Water hyacinth was first declared as a Class A noxious weed in 1981 under the Noxious Plants Act. Salvina was first declared in 1983.

Visit www.biosecurity.govt.nz/pests/salvinia for more information.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Gordon Campbell:
On Anne Tolley’s
Callous Folly

Years ago, I remember someone in the Heath Ministry telling me off the record that regulatory oversight in this country largely consisted in ‘waiting for something to turn green or fall off somebody’ before the authorities would swing into action...

Last week’s conflict between Social Development Minister Anne Tolley and District Court judge Carolyn Henwood illustrated quite a few of the flaws in the system. More>>

 

Members’ Bills: Greens' Domestic Violence And Loans Bills Pulled From Ballot

Jan Logie’s Domestic Violence-Victims' Protection Bill introduces workplace protections for victims of domestic violence, including allowing victims to request paid domestic violence leave for up to 10 days... Gareth Hughes’ Bill allows Kiwis with student loans to defer their student loan repayments into a first home savings scheme. More>>

ALSO:

IPCA: Police Did Not 'Deliberately' Use Pepper Spray On 10-Year-Old

"When spraying the man, the officer did not properly consider the necessity of using pepper spray in a confined space, the likelihood that it would affect the other innocent passengers or the fact that he was using a more powerful spray." More>>

ALSO:

Donor Bill Passes: Full Income Compensation For Live Organ Donors

Unanimous cross-party support for the Compensation for Live Organ Donors Bill represents a critical step in reducing the burgeoning waiting list for kidney donations, according to Kidney Health New Zealand chief executive Max Reid. More>>

ALSO:

Earthquake Response: Emergency Legislation Prepared

Three new Bills have been drafted in the wake of the magnitude 7.8 earthquake on November 14 to ensure the government can enable affected communities to respond quickly and efficiently. More>>

ALSO:

Housing MPs: New Building(s) For Parliament

A new building will be erected on Parliament grounds to house Members of Parliament and their staff who currently work in leased accommodation in Bowen House. The plan has cross-Party support, apart from NZ First, said Parliament’s Speaker, Rt Hon David Carter. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news