Welcome to the Growing Season
Spring and summer are critical seasons for forage brassica crops. With warmer temperatures and longer days, pests and weeds can quickly threaten your investment. Corteva Agriscience is here to help you protect your crops and maximise yield with proven solutions tailored for New Zealand conditions.
In this issue we cover:
Recommended Crop Protection for Spring/Summer - Insect control and Weed Management | Hints & Tips for Optimal Brassica Crops | Post Emergence Spraying | Brushweed Control reminder
Recommended Crop Protection for Spring/Summer 2025
Integrated pest management and effective weed control are crucial from sowing through to canopy closure to protect yield. Corteva has the right solutions for your crop.
Insect Control
TwinGuard® Insecticide (New product!!)
Targets: Nysius, springtails, leaf miner, caterpillars (diamondback moth, white butterfly, loopers), aphids
Benefits:
- Combines Isoclast® (Group 4C MOA) and Jemvelva® (Group 5 MOA) for dual action on Nysius
- Fast knockdown and feeding cessation
- IPM-compatible with low toxicity to beneficial insects
- Wide application window
- Water dispersible granule (WDG) formulation for easy handling and safety
Watch our Technical expert Nicole Morris discussing TwinGuard in our latest Corteva Conversation by clicking the button below:
Sparta® Insecticide (Jemvelva® active)
Targets: Diamondback moth, cabbage white butterfly, springtails
Benefits: Rapid knockdown, extended control, IPM-friendly
Transform® Insecticide (Isoclast® active)
Targets: Aphids in forage brassicas
Benefits: Superior aphid control, systemic protection, excellent environmental profile
Weed Management
Milestone® Herbicide
- Controls: Thistles, spurrey, willow weed, plus other hard to kill weeds
- Features: Advanced aminopyralid + clopyralid formulation
Korvetto® Herbicide
- Controls: Shepherd’s purse, fumitory, fathen, and nightshades
- Features: Arylex™ active + clopyralid combination, short plant back
Tank Mix: Korvetto + TMax® for Amaranthus control
Gallant® Ultra Herbicide
Controls: Grass weeds in forage brassica crops
Features:
- Highly effective on annual and perennial grasses
- Flexible post-emergence application up to 6 leaf
- Safe for brassica crops when applied at recommended rates
Scan or click to visit our Brassica Solutions page.
Hints & Tips for Optimal Brassica Crops
✅ Start Clean, Stay Clean - Apply herbicides promptly after emergence
✅ Monitor Pest Pressure - Scout regularly for Nysius, caterpillars, and aphids
✅ Soil health matters - Ensure balanced nutrients and correct pH
✅ Integrated Pest Management – Combine chemical, biological and cultural practices
Post-Emergence Spraying – Expert Insights
Timing is everything when it comes to post-emergence spraying. Applying herbicides at the right growth stage ensures optimum weed control when weeds are small. In our latest Corteva Conversations video, Alysha Brick shares practical tips on post em herbicides and insecticides to achieve optimal results.
Watch the video here: Corteva Conversations – Post-Emergence Spraying
Brushweed Control Reminder
Don’t let brushweeds steal productivity from your grazing land. Download Corteva’s Brushweed Control Manual for detailed guidance
Stay Connected
Our team of Kiwi experts is here to support you every step of the way.
If you are not already signed up to receive our newsletters click here to register.
