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In the February edition
- New for spring 2025: Manhattan herbicide
- The benefits of Arylex for spring weed control
- Get your spring cereals off to a great start with Ympact
- Spring clean your oilseed rape with Korvetto
- Improve spring nitrogen management with Instinct
- Events, podcasts and more
- Update your communications preferences
- IASIS points
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New for spring 2025: Manhattan herbicide for grass and broad-leaved weed control in cereals
Manhattan® is a unique combination of active ingredients offering a new solution for use in winter wheat, winter rye, winter triticale and winter spelt.
Manhattan represents a significant evolution from Broadway® Star – the herbicide currently favoured by many tillage farmers – as it now contains Arylex™ in combination with pyroxsulam and florasulam, taking already proven and powerful chemistry to new highs.
Arylex is a unique molecule in the arylpicolinate family of auxin mimics which gives consistent control of challenging weed species within difficult conditions that do not favour other chemistries. One of its key characteristics is a rapid speed of kill and fast degradation time in soil.
Including it in the formulation creates an even broader spectrum of target weeds which includes bromes, wild and tame oats, ryegrass (from seed) as well as poppy, speedwells, chickweed, mayweed, cleavers, fumitory, and a number of umbellifer, polygonum and brassica species.
Manhattan is formulated as a wettable granule in a five-hectare pack and should be applied at a rate of 100g/ha with a suitable adjuvant.
There are no following crop restrictions and the wide application window spans autumn and spring from growth stage 12 through to 32. There is a broad tank mix list, and the product is extremely safe on crops.
Manhattan is an easy-to-use product, with flexible use and delivering one of the widest spectrums of both grass and broad-leaved weed control.
More information will be provided as the season progresses. Contact Whelehans or the Corteva hotline for more information, or visit the product page.
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The benefits of Arylex for spring weed control
This spring is very different from 2024, with much more wheat in the ground and over 90% receiving a residual application in the autumn. Early drilled crops are looking good with few weeds, thanks to effective residual herbicides. Later drilled crops have suffered from water-logging, leading to open canopies and greater weed burden.
All crops will benefit from a post-emergence herbicide application to target emerging or overwintered weeds. Early control is crucial to prevent weeds from getting ahead once nitrogen is applied and the season warms up.
Arylex benefits: Having chickweed and cleaver problems? Pixxaro™ EC and Zypar® have you covered.
Arylex is essential for broad-leaved weed control in winter and spring cereals. It performs well in cold, fluctuating temperatures, offers excellent crop safety, and has a wide application window up to GS45. Arylex is in Zypar and Pixxaro, effective against cleavers, chickweed, mayweed, fat-hen, fumitory, and charlock.
Recommendations:
- In winter cereals, apply Arylex early or tank-mix with a graminicide.
- For later flushes of cleavers and black bindweed, mix with T1 or T2 fungicide.
- In spring cereals, tank-mix with PGRs, fungicides, or trace elements to reduce number of applications.
- Tank-mix with other herbicides for difficult weeds like larger Bur chervil.
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Spring clean your oilseed rape with Korvetto
As spring emerges, after a relatively mild winter, broad-leaved weeds have continued to emerge and are ever present.
Poppies, mayweeds, cleavers and thistles can not only out-compete crops – left unchecked they can also cause harvest headaches and create a seed return to the soil which compounds the problem in future years. A solid autumn programme will have kept key problem weeds at bay, but early spring is an important time to monitor the emerging burden in the field.
Korvetto® has excellent activity on the weeds that can rob yield and cause issues at harvest. It contains Arylex™ active - the same active ingredient used in autumn herbicide Belkar® - in formulation with clopyralid.
Timing of Korvetto application is from 1st March during stem elongation up to before flower buds are visible above the canopy (GS30-50) and it can be used from 8-25°C in humid or dry conditions. Avoid treating the crop when it is under stress, especially when frost is expected. There are no following crop restrictions in a normal crop rotation and farmers are free to use 1.0 l/ha of Korvetto if they have applied a post-emergence herbicide in the autumn such as Belkar or Astrokerb®.
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Improve spring nitrogen management with Instinct
Reducing losses of nitrogen to the environment is one approach to improve nitrogen use efficiency. Instinct®, containing Optinyte™ technology, reduces environmental loss by slowing the nitrification process.
Instinct is a nitrification inhibitor. It inhibits the enzymatic process in the Nitrosomonas bacteria for a period of 10-12 weeks.
As a result:
- More ammonium retained in the soil.
- Less nitrate lost to leaching.
- Less NOx gas emissions (de-nitrification losses).
- There is more nitrogen in the soil for longer.
Key application advice for Instinct in oilseed rape:
- Application by farm sprayer as close as possible to spring fertiliser application.
- Incorporation by precipitation (12 mm rainfall/heavy dews within 10 days of application).
- Instinct can be applied in rain (when applied alone).
- Check compatibility list for supported mixes.
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Winter OSR, spring application of Instinct
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Across 42 trials, there was an increase of 3.5% (0.15 t/ha).
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In other news
The ITLUS (Irish Tillage And Land Use Society) Spring Workshop was a huge success on 20th February with a large crowd in attendance and no rain in County Louth! Plenty of discussions on crop management for the season ahead. Many thanks to Drummonds for hosting us.
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New Podcast: Agriscience Explained
Discover the science driving agricultural innovation with Agriscience Explained. This podcast, developed by our global team, visits with both scientists and farmers about how agricultural innovations are discovered, developed and deployed on the farm.
Don’t miss an episode! Follow Agriscience Explained on your favourite podcast platform.
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Ways to stay in touch
Area Manager and National Technical Manager: Liz Glynn, 00353 (86) 844 5306.
Visit our website www.corteva.ie for product information, labels and advice.
Our hotline team are on hand to answer any queries or concerns you have.
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USE PLANT PROTECTION PRODUCTS SAFELY. Always read the label and product information before use. For further information including warning phrases and symbols refer to label.
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