Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


New insect to patrol apple orchards

Media Release

New insect to patrol apple orchards

Hawkes Bay, New Zealand. 1 November 2012...New Zealand pipfruit growers are enhancing their management options for one of the key pests for the pipfruit industry – the codling moth – with the release of a new biocontrol agent.

Plant & Food Research scientists, with support from Pipfruit New Zealand, have been investigating the potential for Mastrus ridens, a small parasitoid wasp, to control the codling moth, one of the major pests affecting the New Zealand pipfruit industry. Following EPA approval, field appraisal will take place over the next few years to measure the effectiveness of the wasp as a long term biological control agent. The first release in commercial orchards, of 1,000 individuals, has been/will be made in Hawke’s Bay today/this week.

“Codling moth is a major issue for the pipfruit industry, with control of the pest costing between $8 and $12 million each year,” says Mike Butcher, Technical Manager of Pipfruit New Zealand. “Whilst the presence of a single moth in a shipment can impact on market access for all New Zealand apple exports to codling moth sensitive markets, the industry is also focused on reducing the use of chemical pesticides. This ultimately means we must find new ways to control pests, and the introduction of the Mastrus wasp as a biological control agent is an important new component to our system that currently includes mating disruption, a codling moth specific virus and selective chemistry. This release is an important step in meeting quarantine requirements for our premium markets.”

The Mastrus female attacks the cocoons of codling moths, laying its eggs on the moth larvae. When the wasp larvae hatch, they feed on, and eventually kill, the codling moth larva. They then emerge as adult wasps to disperse and seek new codling moth larvae on which to lay their eggs.

“Biological control agents, such as parasitoid wasps, play an increasingly important role in controlling pests as chemical interventions are reduced,” says scientist John Charles from Plant & Food Research. “This species, which originated in Kazakhstan, has been established in other countries, particularly in the USA, for control of codling moth, and these initial releases in New Zealand will help us to determine how well they survive in our environment and control the pest.”

The Mastrus wasp was approved for release by the Environmental Protection Agency in June, and thousands have since been reared in captivity.

A video showing the female Mastrus wasp laying her eggs can be found at http://plantandfood.us5.list-manage.com/track/click?u=1b46d14e528ad30bae8b3663c&id=4098e51aff&e=5b367992d8.
ends

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

Air NZ Wine Awards: Victory For Villa Maria As Pinot Noir Thrills

It was a night to remember as Villa Maria Estate picked up one of the highest accolades of the evening, the O-I New Zealand Reserve Wine of the Show Trophy, at the 28th Air New Zealand Wine Awards. The Villa Maria Single Vineyard Southern Clays Marlborough ... More>>

ALSO:

Future Brighter Money: RBNZ Releases New Bank Note Designs

New Zealand’s banknotes are getting brighter and better, with the Reserve Bank today unveiling more vibrant and secure banknote designs which will progressively enter circulation later next year. More>>

ALSO:

Commerce: Supermarket Inquiry Finds No Breaches By Countdown

The Commerce Commission inquiry into anti-competitive behaviour by Countdown supermarkets, alleged by former Labour Party MP Shane Jones, has found nothing to warrant prosecution, although it warns supermarkets to take care in the way they communicate... More>>

ALSO:

Crown Accounts: English Flags ‘Challenge’ To Budget Surplus

Finance Minister Bill English is warning next month’s half yearly fiscal and economic update from the Treasury may not forecast a budget surplus, saying that returning the government’s accounts to surplus in 2015 will be “a challenge”, given the decline in commodity prices and weak global inflation. More>>

ALSO:

March 2015: Netflix To Launch In Australia And New Zealand

World’s Leading Internet Television Network to Offer Original Series, Movies, Documentaries, Stand-Up Comedy Specials and TV Shows for Low Monthly Price More>>

ALSO:

Price Of Cheese (Is Up): Dairy Product Prices Fall To Five-Year Low

Dairy product prices fell in the latest GlobalDairyTrade auction to the lowest level in more than five years, led by declines in rennet casein and skim milk powder. More>>

ALSO:

Gordon Campbell: On The Australians Scoring Trade Points Against Us With The Chinese

It hasn’t been a great year for Trade Minister Tim Groser... To top it off, Australia has just signed a FTA with China that has far better provisions on dairy exports than what New Zealand currently enjoys in our own FTA with China. More>>

ALSO:

Iwi & Local Consultation: Oil And Gas Block Offer 2015 Begins

Energy and Resources Minister Simon Bridges today announced the start of the Block Offer 2015 process for awarding oil and gas exploration permits. More>>

Get More From Scoop

 
 
Standards New Zealand

Standards New Zealand
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news