Scoop has an Ethical Paywall
Work smarter with a Pro licence Learn More

Video | Agriculture | Confidence | Economy | Energy | Employment | Finance | Media | Property | RBNZ | Science | SOEs | Tax | Technology | Telecoms | Tourism | Transport | Search

 

Managing resistance to protect our crops

Managing resistance to protect our crops

The development of pest, weed and disease resistance to crop protection compounds threatens the sustainability of our primary production and is already a major problem overseas.

Agcarm and the New Zealand Plant Protection Society (NZPPS) recently brought together industry and agricultural experts to discuss the proactive management of pest resistance to crop protection compounds in New Zealand.

Crop protection compounds include herbicides, insecticides and fungicides. They are used to control weeds and to protect crops from damaging pests and diseases.

Examples of resistance in New Zealand include blackspot on apples, powdery mildew (a fungal disease that affects a wide range of plants), glysophate resistant ryegrass, and diamond back moth - which is resistant to a range of insecticides. In some areas, these are now resistant to major chemical groups.
Agcarm chief executive, Mark Ross says “New Zealand is not facing a catastrophe, but we need to be ahead of the game.”

A pesticide resistance management workshop, sponsored by AGMARDT, was held to review, update and develop New Zealand’s resistance management strategies and identify possible new threats. Plans for implementing the strategies and identifying issues were discussed.

The workshop, hosted by Agcarm and NZPPS, also identified priorities for research as well as potential funding sources.

“We will be working with our members, government, farmers and agrichemical users to ensure solutions are developed for potential problems,” said Ross.

Advertisement - scroll to continue reading

Are you getting our free newsletter?

Subscribe to Scoop’s 'The Catch Up' our free weekly newsletter sent to your inbox every Monday with stories from across our network.

NZPPS president, Lisa Jamieson says “Managing resistance requires an understanding of the factors that influence its development, and having strategies in place to manage the risk of resistance developing.
“We need to understand what is happening in the field. This is done by developing test methodology for resistance and monitoring.”

“With good monitoring and early detection, we can adjust strategies to evade resistance,” says Ross.
A good resistance strategy includes alternating crop protection products with different modes of action, crop rotation as well as other management practices such as good hygiene.

What is pesticide resistance?
Among the billions of individuals that make up a pest population (be it disease, insect, mite, weed etc), there may exist some individuals that are more tolerant to a pesticide than others. If the same pesticide is continually applied, then the more susceptible individuals will be killed, leaving only resistant individuals to breed and multiply. If the resistance is heritable then eventually a large proportion of the population may be resistant to the pesticide. The resistant pests may then cause unacceptable damage to crops. See http://resistance.nzpps.org/ for more information.

ENDS

© Scoop Media

Advertisement - scroll to continue reading
 
 
 
Business Headlines | Sci-Tech Headlines

 
GenPro: General Practices Begin Issuing Clause 14 Notices

GenPro has been copied into a rising number of Clause 14 notices issued since the NZNO lodged its Primary Practice Pay Equity Claim against General Practice employers in December 2023.More

SPADA: Screen Industry Unites For Streaming Platform Regulation & Intellectual Property Protections

In an unprecedented international collaboration, representatives of screen producing organisations from around the world have released a joint statement.More

 
 
 
 
 
 
 
 
 
 
 
 

Join Our Free Newsletter

Subscribe to Scoop’s 'The Catch Up' our free weekly newsletter sent to your inbox every Monday with stories from across our network.