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Blog • 27/11/2025

Meet Alysha Brick

An interview with Alysha Brick Corteva Agriscience Territory Manager.

Blog • 27/11/2025

Meet Ash Pace

An interview with Ash Pace Corteva Agriscience Territory Manager.

Blog • 27/11/2025

Meet Ryan Jackson - Territory Manager for Waikato, Taranaki & King Country

An interview with Ryan Jackson Corteva Agriscience Territory Manager.

Feature Story • 18/11/2025

Onuku Drystock Rotorua

Persistent weeds like Californian thistle require a long-term, integrated approach. Te Rangi’s proactive strategy demonstrates how targeted herbicide programmes can restore pasture quality and improve productivity.

Feature Story • 10/04/2025

Cabbage Tree Flat - Hawkes Bay

Cabbage Tree Flat is a 2,000-hectare sheep and beef operation, part of the Horizon Farming Group for the past six years. Farm Manager Alistair McPhearson has been at the helm since the property joined the group.

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Crop Protection Enquiries

Email us at anzcomms@corteva.com

 

The number of cereal aphids caught in our Rokeby suction trap (blue line) between the 4th and 8th of November (Nov week 2) was 5 and is displayed in the graph below, along with;

      -  Other aphid numbers for 2021 (orange line)

       - Average weekly temperature s for 2021 (purple line), calculated  from mean daily temperatures from NIWA CliFlo data for Ashburton (station no.26170) and

       - The 10-year average of weekly temperature between 2010 and  2020 (red line)

      -  5 year average of cereal aphid numbers  for Rokeby (green line)

Cereal aphid numbers caught in suction traps are an indication of flights and do not replace the need for direct searching and monitoring in your crop.

Relatively high numbers of aphids are expected till the end of May, with spring flights occurring late September or October

Generally the warmer the temperature, the faster an aphid will develop into an adult. However other factors, such as amount of rain, can affect aphid development and survival. 






For information on protecting your Cereal crops with Transform insecticide click here.

Corteva Conversations

Listen to Corteva Agriscience technical experts discuss the best crop protection products for your crop.

CC Rexade on Rye grass

Corteva Agriscience Territory manager John Smith discusses the effects of Rexade GoDri on Ryegrass.

GrowPlus Club

This programme is open to selected agricultural contractors who buy and supply Corteva Agriscience products to their clients.

We recognise that professional agricultural spraying contractors are crucial for the best performance of our carefully researched plant protection products. Our loyalty programme is designed to reward contractors for the added value they provide to our products and to the New Zealand agricultural market.

Corteva Agriscience continues to invest in new and innovative solutions to meet the requirements of the New Zealand farmer. Our partnership with agricultural spraying contractors ensures we can continue to deliver value through improved productivity.

GrowPlus Club Corteva Agriscience New Zealand

GrowPlus club is exclusively designed to reward you & your loved ones. Whether it's an adventurous trip to your favourite destination or a weekend getaway with your family, a big range of experiences, accommodation & travel opportunities are on offer.

 

CONNECT WITH YOUR INDUSTRY PEERS, LEARN MORE AND JOIN GROWPLUS CLUB TODAY:

 

Just follow these 3 easy steps

Step 1. Visit growplus.corteva.co.nz

 Step 2. Click 'Sign up today'  and you're in! 

Step 3. Get 200 Bonus Points for your first invoice upload.

 

(Invoices after 1 April 2020 are eligible to upload and earn points)

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