New Zealand Committee on Pesticide Resistance (NZCPR)

New Zealand's main advocacy group for pesticide resistance management is the New Zealand Committee on Pesticide Resistance (NZCPR), which was first formed in 1989 in conjunction with the New Zealand Plant Protection Society (NZPPS).

NZCPR has three Task Groups, one for each of fungicides and bactericides, insecticides and miticides, and herbicides. Using available information on resistance and local crop and pest conditions NZCPR develops and publishes guidelines for resistance management, which are, where possible, consistent with international guidelines.

Full pesticide resistance prevention and management strategies for New Zealand are freely available on this website and information on resistance management is placed on product labels.

More background information is available here. Current members of the committee are profiled below.


Ms Lisa Jamieson

Contact details:
Plant & Food Research
Private Bag 92169
Auckland 1142
Ph: 09 925 7284

Background: Lisa has conducted research projects on Integrated Pest Management in the Applied Entomology team at PFR since 1995. Her research has included insecticide trials, biological control, semiochemical control, biosecurity, risk assessment and postharvest pest management. Lisa was the president of NZ Plant Protection Society from 2014 until 2016 and in 2016 took up the position of Chair of the NZCPR.

Leader, Fungicide Resistance Task Group

Mr Grant Hagerty

Contact details:
Technical Manager: Field Services
BASF New Zealand Limited
PO Box 20389, Bishopdale, Christchurch 8543
Ph: 03-360-2613

Background: Grant has worked with BASF since 1981 and has been involved in the research, development and commercialisation of a wide range of plant protection products, with a focus on fungicides and plant growth regulators. Products include: for cereals Terpal, Puma S, Opus, Comet, Systiva and Adexar and in fruits and vegetables: Scala, Collis, Pristine, Zampro, Cabrio, Stroby, Regalis and Sercadis. Over that time, he has co-operated with BASF fungicide discovery research in running a micro-plot screening programme with Germany. Grant has been involved with products as they have incurred the wrath of resistance particularly the strobilurins and the triazoles and has co-authored many of the current guidelines for fungicide resistance management in New Zealand.

Leader, Herbicide Resistance Task Group

Dr Kerry Harrington

Contact details:
Senior Lecturer in Weed Science
Institute of Agriculture and Environment (PN 433)
Massey University
Private Bag 11-222
Palmerston North 4442
Ph: 06-350-4926

Background: Kerry has been a lecturer and researcher in weed science at Massey University since 1983. Over that time, he has been involved with research into many of the herbicide resistance cases within New Zealand. These include nodding thistle and slender winged thistle resistant to phenoxy herbicides, Onehunga weed resistant to picolinic herbicides, black nightshade resistant to triazines, giant buttercup resistant to ALS-inhibitors, fathen resistant to dicamba and ryegrass resistant to glyphosate.

Leader, Insecticide Resistance Task Group

Mr Tim Herman

Contact details:
Technical Manager - Crop Protection
Apple & Pears NZ
PO Box 11094
Hastings 4158
Ph: 06 873 7080
Mob: 027 490 3359

Background: Tim has extensive experience in the development and implementation of IPM programs in vegetable crops and agrichemical research in a range of horticultural crops. His research has included contributing to the development of resistance management strategies for heliothis (Helicoverpa armigera), diamond-back moth (Plutella xylostella), potato tuber moth (Phthorimaea operculella) and onion thrips (Thrips tabaci).

Science adviser

Dr Rob Beresford

Contact details:
Principal Scientist
Plant & Food Research
Mt Albert Research Centre
Private Bag 92169
Auckland 1142
Ph (DD): +64 9 925 1735

Background: Rob has worked on plant disease epidemiology since 1979, initially on cereals in Canterbury and the UK, then from 1993 on fruit and vegetables, based in Auckland. His research on impacts of weather and climate on diseases has led to implementation of disease forecasting models for fungicide and bactericide management in the apple, onion, winegrape and kiwifruit industries. Rob has been involved in fungicide resistance management since 1995 and he updated resistance management strategies for all crop protection fungicides used in New Zealand in 2003. He established the present New Zealand Committee on Pesticide Resistance in 2007 and chaired the committee until 2012.