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In the May edition
- Register now for our €200 OSR Offer
- Septoria pressure in Ireland as growers prepare for flag leaf sprays
- 2023 Inatreq Stewardship Support Offer
- Getting your potato herbicide and fungicide programmes right for 2023
- Apply BlueN to your potato crop
- Weed control in your cereal crops
- Technical support contact details
- IASIS points
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Register now for our €200 OSR Offer
We are once again running our OSR Offer to help you maximise the potential of your oilseed rape crop. This year, we will be offering €200 cashback to anyone that purchases Protector® Sclerotinia tolerant hybrid, PT303 and Belkar® herbicide for the 2023/24 growing season. Anyone taking part in the offer will be eligible for a one-off payment of €200 if they make a purchase before 1st November 2023 and submit a claim form by 15th November 2023*.
Click here to find out more and register your interest.
*Terms and conditions apply.
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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.
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Septoria pressure in Ireland as growers prepare for flag leaf sprays
Winter cereal growers in Ireland have a significant septoria challenge to overcome as they prepare for T2 flag leaf spray applications. A mild winter was followed by heavy rain in March and April, with conditions warming in May – the perfect breeding ground for fungal disease to develop.
Crop specialists at Teagasc say septoria levels are heightened but a well-timed fungicide application with curative and preventative chemistry is likely to protect crops well. Corteva Agriscience is advising growers to use the latest fungicide chemistry, and to assess disease pressure and variety when selecting their application rate in the coming days and weeks. Shay Phelan, Tillage Specialist at Teagasc, said: “We are seeing quite a bit of septoria in wheat crops – higher than normal. Southern Ireland is probably where the pressure is greatest, but levels are above average in the middle of the country too.”
Liz Glynn, National Technical Manager for Ireland, said this is being reflected in disease pressure which is building in line with May’s climbing temperatures. “There is plenty of septoria in the base of the crops in the trials we have been looking at and the warm, wet weather will contribute to infection further up the plant,” she said. “Varietal differences are evident too; Bennington and Graham are two wheats we have seen higher levels of disease in so far this year.”
Shay said he expects growers to alternate their chemistry and use a multisite in their T2 tank mix to protect crops for longer and strengthen anti-resistance strategies. Liz agrees and is advising growers to use Inatreq, which has proven its ability to deliver curative and preventative persistence against yield-robbing diseases, perhaps most notably in 2021 when a wet spring created similar circumstances to 2023.
Read the full press release here.
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2023 Stewardship Support Offer of €200 now live
Before purchasing or using products containing Inatreq active, farmers and contractors have been asked to follow the best practice application advice provided by Corteva.
In recognition that changing sprayer parts does carry a cost, Corteva are offering a goodwill gesture of €200 towards the cost of sprayer parts purchased in conjunction with products containing Inatreq™ fungicide.
Click here to learn more about the offer and submit your claim. This offer is limited to the first 500 successful claims made before the closing date of 31 August 2023.
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Getting your potato herbicide and fungicide programmes right for 2023
Potato planting continues well into May, with a frustrating stop/start pattern continuing. In many instances this will have inevitably resulted in a focus on getting the crop in, rather than applying pre-emergence herbicides. Indeed, the warming soils will mean a smaller window than usual for application. Post-emergence herbicide choices are very limited, with Titus® offering the most comprehensive range of broad-leaved weed and grass weed control.
Benefits of Titus:
- Titus may be applied to all varieties (not seed crops)
- Titus controls a range of both broad-leaved weeds and grasses
- Broad-leaved weed spectrum may be broadened by mixing with metribuzin 0.2-0.4kg/ha
Titus weed spectrum
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Key * Weed control improved when the tank mixture of Titus 40g/ha + metribuzin 0.2kg/ha is used in preference to Titus alone.
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The pressure of disease means fungicide programmes should also be a priority. Zorvec is unique in FRAG Group-49 active ingredients as it provides a very valuable alternative mode of action in the programme. Apply twice in rapid growth phase of the crop to benefit from the cleanest start available and use the unparalleled control conferred by Zorvec Endavia® in stable canopy to maintain crop canopies when blight pressure increases, particularly in crops destined for storage.
The first time on the market this year for Irish growers is the newly formulated product Zorvec Entecta™ - a liquid formulation combining the Zorvec active (oxathiopiprolin) with amisulbrom in a one-litre bottle, providing protection from late blight for up to 10 days after application. Find out more here.
Benefits of Zorvec:
- Systemic - moves into new growth for cleanest possible start for your crop
- Curative - only offered by oxathiapiprolin, cymoxanil and propamocarb
- Persistence - greater than any other active ingredient available to growers
- Source of the Zorvec Bonus (find out more in the Potato Technical Update, Spring 2023)
- Enables use at 10 day intervals
- As rainfast as any product available to growers
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Zorvec™ 2023 technical guide presented by Craig Chisholm, Field Technical Manager for Potatoes in the UK at Corteva Agriscience
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Apply BlueN to your potato crop
With challenging weather conditions so far, the window for drilling and planting potatoes, sugar beet and maize has been extended. Consider applying BlueN™ to boost Nitrogen efficiency in these crops and improve yield potential.
BlueN contains a naturally occurring bacteria, Methylobacterium symbioticum, that will fix nitrogen from the atmosphere and convert it into ammonium fertilizer in the plant. Meta data analysis from key crops including potatoes has shown that application of BlueN has produced considerable yield benefits.
In 32 independent and Corteva potato trials in 2022, with a positive impact on the marketable fraction, there was an average yield response of 2.5t/ha yield in potatoes compared to base fertilizer regime. In over 80% of the trials the yield response was on average 3.3t/ha. Current pricing for potatoes is £190-£250/tonne (€219-288/tonne) depending on variety and quality, this increase in yield represents a significant benefit to the farmer. For best results apply BlueN when the potato crop is meeting in the rows, this usually corresponds to BBCH25-33 of the crop.
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Weed control in your cereal crops
Now that the weather conditions have improved, growers face the challenge of a large backlog of on farm activities. Getting on top of broad-leaved weeds should however be the priority as there are reports of large, competitive broad-leaved weeds in many cereal crops currently.
In winter wheat crops where residual herbicides have now run out of steam, there are large cleavers, bindweed, fumitory and some creeping thistle present. Pixxaro® at 0.25L/ha is a cost-effective way of controlling these weeds, offering better control than 100grams AI of fluroxypyr. Where creeping thistle is present, growers may add a sulfonyl-urea herbicide such as metsulfuron-methyl to complete the weed spectrum.
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Where residual herbicides have not been used, the weed burden is much greater and includes other difficult weeds such as brassicas, cranes-bill, poppy and groundsel. Zypar® offers a broader spectrum and sets the industry standard for control of the most competitive broad leaved weeds. With applications permitted up to and including GS45 (30th June) on winter and spring cereals (except oats), Zypar offers a flexible window of application to the grower, beyond that of the phenoxy and sulfonyl-urea herbicides. Use Zypar at a minimum of 0.75L/ha, consider higher rates if weeds have become large.
In Scotland, where spring barley crops have only just gone in, growers should make the most of the first opportunity to hit weeds hard, once they emerge. Cold conditions will have encouraged the germination of weeds such as the polygonum species, brassica weeds such as Charlock, and Fumitory, weeds which are not controlled by pre-emergence residual herbicides.
For robust control of difficult spring barley weeds such as fumitory use Pixxaro at 0.375L/ha. Activity against polygonum species may be boosted by tank-mixing with a sulfonyl-urea herbicide such as Harmony® M. Pixxaro may also be used to control ALS resistant chickweed, as it contains fluroxypyr.
Pixxaro weed spectrum
If you are having trouble viewing the weed spectrum, you can also view it here in the Pixxaro Tech Sheet.
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Key: bold–label weeds, , * –improved control with adjuvant, S susceptible, MS –moderately susceptible, T –tolerant, TL –true leaves, ‘-’ no information. Any recommendation for off-label control is only indicative and should not be considered a recommendation for use on the part of Corteva Agriscience. The user assumes full responsibility for use on these weeds.
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Update your preferences and tailor your choices to make sure you receive the communications that are right for you. Don't forget to enter into our monthly prize draw by ticking the box before submitting to be in with the chance to win.
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If you need technical advice or support, we’re here to help.
Keep up to date by following us on Twitter and Facebook.
Search for @CortevaIE or click below to like and follow.
You can also follow Liz on Twitter here.
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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. Inatreq™ active contains fenpicoxamid. BlueN contains Methylobacterium symbioticum. Zypar® contains Arylex active and florasulam. Titus® contains rimsulfuron. Zorvec Endavia® contains benthiavalicarb and oxathiapiprolin. Pixxaro® EC contains ArylexTM active (halauxifen-methyl) and fluroxypyr.
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