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In the October edition
- Autumn grass weed control programmes
- How to control brome in cereal crops
- Kerb® Flo weed control in winter beans
- Belkar® hotline questions this October
- Propyzamide: Key information, resources and stewardship advice
- Download the Corteva Arable App, you could win a hamper
- The importance and benefits of using a silage additive
- Don't forget to register for our €200 OSR Offer
- Find us at the Tillage Day event on 7th November 2024
- Staying in touch and IASIS points
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Autumn grass weed control programmes
As drilling and pre-emergence applications come to a close, growers' minds should now turn to planning the post-emergence follow-up spray where needed.
Hitting grass weeds early, before they become competitive is more important than ever, particularly when it comes to difficult grass weeds such as brome and ryegrass. Using a residual in combination with a post-emergence herbicide is also an important part of good resistance management strategy. The residual component will take out or heavily restrict the growth of some early-emerging grassweeds, leaving less work for the contact spray to do later, meaning better overall control and a reduced risk of resistance building.
Broadway® Star has been a mainstay of autumn and spring grass weed programmes for many years, delivering excellent control of sterile and great brome when used following an application of pendimethalin plus flufenacet in the autumn. For best results, always apply Broadway Star when target weeds are small and actively growing.
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How to control brome in cereal crops
Bromes are problematic, highly competitive grass weeds with good tillering ability, wide emergence patterns (depending on species) and good resilience to abiotic stressors.
Much like ryegrass, bromes are an increasing problem in the UK and Ireland, driven by increased use of min-till and no-till systems, close crop rotations and limited herbicide options.
Yield loss from brome results from direct competition but, due to the lack of control options in other crops such as barley and oats, they can be a challenge across the rotation.
One reason herbicide efficacy can be reduced is due to the plant’s physiology, the most common species have leaf hairs, varying levels of leaf waxiness and challenging leaf architecture in some cases, all making getting the herbicide through the cell wall to the target site more difficult.
Corteva trials have shown that the best control comes from a two-to-three spray programme across the autumn, targeting emerged brome when small, optimally when the weed has between one and three leaves. Key residual actives for control of bromes include flufenacet, triallate (pre-only) and pendimethalin. For emerged bromes, pyroxsulam (Broadway® Star) should be partnered with pendimethalin and applied as soon as application conditions are conducive to active weed growth.
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Kerb Flo weed control in winter beans
Kerb® Flo has an approval for grass and broadleaved weed control in winter beans. Apply pre-emergence within 7 days of drilling. Moist conditions are ideal with soil temperatures falling. Please follow stewardship advice for Kerb Flo including considering buffer strips and grass margins.
Kerb Flo can be applied pre-emergence with other products for effective weed control. Contact our hotline for further tank mix advice.
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Belkar hotline questions this October
Belkar and canopy size
Belkar® has good flexibility for application conditions including working at temperatures as low as 2°C and will give effective control even where large crop canopies exist.
Does Belkar control volunteer linseed?
Arylex™ active demonstrates good activity against linseed up to 6-8 leaves. This can be delivered in 0.5L/ha of Belkar this autumn.
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For Belkar product information, application rates and more, visit the product page at www.corteva.ie/belkar.
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Propyzamide: Key information, resources and stewardship advice
It's October, so take the time now to remind yourself about the key information and stewardship advice from Corteva ahead of autumn and winter propyzamide applications!
Have you seen our Propyzamide Back to Basics online Hub? Here you will find everything you need to know about this selective, systemic herbicide for use in winter oilseed rape, so take a look.
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Have you downloaded the Corteva Arable App yet?
You could win a hamper!
The Corteva Arable App, the mobile application filled with information and resources to support you on the go, is now available to Irish growers and advisors! Discover all the benefits and get access to solutions quickly and easily on your mobile device.
To celebrate the launch of the app in Ireland, anyone who downloads the app* before 15th November 2024 will be entered into a prize draw to win a fantastic hamper!
Don’t miss out, download the app now. Simply type 'Corteva Arable' into your App Store or Google Play Store. For more information about Corteva apps click here.
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*Prize draw only applies to those located in the Republic of Ireland who download the app before 15th November 2024.
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The importance and benefits of using a silage additive
The autumn maize harvest is now well under way. It is important to consider the potential benefits of harvesting some of the crop for crimped grain maize silage. Considering the nutritional value of the crimped maize silage, adding a silage inoculant to enhance the fermentation process and ensure aerobic stability is an important step in the ensiling process. Pioneer® brand 11A44 will dramatically reduce heating within the silage pit. Shown to decrease yeasts and moulds to just 0.1% of untreated control silage, this product will improve fermentation and reduce dry matter losses when used on crimped maize at less than 65% dry matter.
In circumstances where a quick feed out is needed, our crimped grain maize inoculant 11B91 Rapid React® containing Lactobacillus plantarum and Lactobacillus buchneri will give the rapid drop in pH and the aerobic stability to allow feed out as soon as 7 days. The Lactobacillus plantarum in 11B91 Rapid React will also ensure a faster and more efficient acid fermentation than that achieved when using 11A44.
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Don't forget to register for our €200 OSR Offer
We are once again running our OSR Offer to help you maximise the potential of your oilseed rape crop. We will be offering €200 cashback to anyone that purchases Protector Sclerotinia tolerant hybrid, PT303 and Belkar® herbicide (minimum purchase requirements apply) for the 2024/25 growing season.
Anyone taking part in the offer will be eligible for a one-off payment of €200* if purchase is made before 1st November 2024 and a claim is submitted using the online form by 15th November 2024.
The sole Irish supplier of our oilseed rape varieties are Drummonds. Visit drummondsireland.com, or contact a representative: Brendan Reilly 353 87 259 8338; Brian Reilly 353 87 600 4800 for further information.
*Terms and conditions apply.
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We will be exhibiting at Tillage Day on 7th November
Tillage Day is a farmer-focused event, where you will hear from agronomists, grain market analysts, industry experts and more throughout the day.
Head over to the Terrachem and Whelehan Crop Protection stands to chat to us about our range of solutions! For tickets and information click here.
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If you need technical advice or support, we're here to help
Area Manager and National Technical Manager: Liz Glynn, 00353 (86) 844 5306.
Visit our website www.corteva.ie for product information, labels and advice.
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You can also stay in the loop with all the latest updates by following @CortevaIE on X and Facebook.
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10 IASIS points will be awarded to those subscribing to this Agronomy Update.
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Use plant protection products safely. Always read the label and product information before use. PAY ATTENTION TO THE RISK INDICATIONS AND FOLLOW THE SAFETY PRECAUTIONS ON THE LABEL. Triple Rinse Containers and Invert to Dry at Time of Use. For further information including warning phrases and symbols refer to label. ®, ™ Trademarks of Corteva Agriscience and its affiliated companies. All other brand names are trademarks of other manufacturers for which proprietary rights may exist. All manufacturers’ tradenames and trademarks are duly acknowledged. Belkar® contains halauxifen-methyl (Arylex™ active) and picloram. Astrokerb® contains aminopyralid and propyzamide. Kerb®Flo contains propyzamide.
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