Water volumes and the role of Drift Reduction Nozzles
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ProClova® XL, our newly approved clover safe herbicide, must be applied with at least 75% drift reducing nozzles. Corteva Agriscience supports a water volume down to 200 litres/ha if the appropriate Drift Reduction Nozzles are used with our other grassland herbicides.
Benefits of using Drift Reduction Nozzles:
- Up to 75% reduction in spray drift
- They can support a reduction in aquatic buffer zone
- Improved spray coverage on the target weeds
- Better product performance
See the Spraying Low Water Volumes in Grassland video in the ‘How To’ section of the Corteva Forage App. If you haven't downloaded the app yet, you can do so here.
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Sycamore seedlings in equine paddocks
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Springtime typically sees flushes of sycamore seedlings in pony paddocks. Some sycamore seedlings contain the toxin, hypoglycin A, which when eaten by horses or ponies, can cause the sometimes-fatal condition equine atypical myopathy.
Sycamore* is not a label weed for Corteva’s grassland herbicides, but spot treatment with Grazon® Pro or a boom spray with Doxstar® Pro will give control of sycamore seedlings. For paddock owners who do not hold sprayer qualifications, then the product SBK Brushwood Killer can be used. Alternatively, you can employ a spray contractor to treat paddocks with a professional use herbicide.
Horse owners need to be aware of the consequential extended grazing intervals needed following the treatment of sycamore seedlings. As with the chemical weed control of ragwort, it is necessary for the weed to have died and rotted down completely before animals graze the field again.
*Any recommendation for off-label or anecdotal 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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Docks start to show active growth once temperatures reach 8oC. They become a more vibrant green and less waxy. For optimal control, wait until overnight frosts and/or cold nights have passed and sustained active growth has begun.
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Cold affected docks – hold treatment until active growth is seen
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Apply Doxstar® Pro at a rate of 2.0 litres/ha once docks have reached the size of a dinner-plate (approx. 20cm across). If treating grass ahead of a silage cut, allow a minimum of 21 days, but delay 28 days after application before cutting to secure optimal control.
Doxstar Pro application also controls chickweed and dandelions.
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Using Envy to control buttercups and dandelions
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Buttercups can become a significant problem in aging pasture where sown grass species are losing their vigour and where soil structure and drainage is poor. As with all perennial weeds, the best time to spray buttercups is before flowering in the spring.
Dandelions can also be a troublesome weed in some grassland fields. They tend to colonise areas where grass has been overgrazed and soil fertility is low. Although dandelions are palatable to stock, they are relatively poor in terms of nutrition. Their presence can reduce the overall productivity of pasture. Similar to buttercups, the best control for dandelions is achieved with a pre-flowering treatment.
Use Envy® to control both buttercups and dandelions.
The advantages of using Envy:
- Envy is very safe to grass
- Contains florasulam, which enables good control in cooler temperatures
- It can give over 85% control of buttercups and dandelions
- It has a short stock exclusion of just 7 days
- Use in established grassland at 2.0 litres/ha in 200 to 400 litres of water
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Weed control in newly sown leys where clover is not present
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Once grasses have reached the 3-leaf stage, check whether a herbicide spray is needed to remove any seedling annual weeds, such as chickweed and redshank, as well as seedling perennials such as docks and thistles.
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Where there is a wide range of weeds growing in a newly sown ley, including seedling thistles and spring-germinating polygonums, treat with PasTor® Trio due to its broader spectrum of activity.
Where docks are present in a newly sown ley, and growing from seed or regenerating from dock root fragments which have carried over from the previous crop, treat with Envy® at a robust dose rate of 1.5 litres/ha.
When compared with straight fluroxypyr, both products offer control of many more weed species and work far better if conditions are still cool.
Fat-hen is a common weed in new sown leys. Where Pastor Trio is being used for weed control in these crops, be aware that fat-hen is not a label weed. Control of fat-hen is variable and not complete. Some control may be seen in fat-hen but only up to the two leaf stage.
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Stress mitigation and building tolerance to pest and disease control in maize using Kinsidro Grow+
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Kinsidro® Grow+ is a humic based substance containing humic and fulvic acids and is derived from sustainably grown Nordic pine forests. During manufacture, the unique and patented extraction method yields a consistently high-quality product with a high fulvic acid concentration. Kinsidro Grow+ is highly concentrated with a conveniently low application rate of 0.15kg/ha.
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The humic substances in Kinsidro Grow+ are bonded with essential macro and micronutrients that affect the biological activity of plants, activate enzymes, increase the amount of chlorophyll, improve the efficiency of photosynthesis, as well as stimulating cell division, growth and development of roots, shoots and leaves. In activating enzymes that produce antioxidants, Kinsidro Grow+ can neutralise excess reactive oxygen species produced in stressed plants that will cause cell damage, death, and reduced plant growth. Applied at growth stage BBCH 21-32 in maize, Kinsidro Grow+ will mitigate against early plant stress caused by herbicide applications or weather conditions in the early weeks after establishment.
Polyphenols are important molecules produced by a plant and are responsible for disease resistance, amongst many other functions Kinsidro Grow+ helps stimulate the production of phenolic compounds, improving disease and pest tolerance in maize.
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Maize hybrids suitable for growing under film
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The Samco System provides extra heat during the first few weeks of growth when the plant is often challenged by cold temperatures. Over the course of the growing season the System significantly increases heat accumulation which can either bring forward the harvest date or increase yield. Different hybrids produce quite different results when planted using the Samco System. Samco and Maizetech have worked closely with Corteva for many years to understand exactly how different Pioneer branded hybrids behave and perform when sown under different films. New hybrid and film combinations are continually tested as they become available.
The Pioneer maize hybrid range offers hybrids suitable for growing under film and in the open, find out more about our hybrids here.
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Increase profitability with silage inoculants
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Our comprehensive proprietary range of silage inoculants have been developed to reduce dry matter losses and improve silage quality. Whether you are making grass silage in cool challenging environments or maize silage in ideal conditions applying the most appropriate Pioneer silage inoculant can make dramatic differences to your profitability. You can see the full range in page 8-9 of our PACTS 24/25 book.
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Q: How long after spraying a ley with either Forefront T or PasTor Trio can I oversow species such as clover, sheep burnett, trefoil, lucerne etc in order to establish a Herbal Ley?
A: Wait 4 months after the use of Forefront T or 6 weeks for PasTor Trio unless it is late in the year when it would be better to delay oversowing until the following spring when the soil is warmer and oversowing success is likely to be higher.
Q: Will Envy control all species of buttercups?
A: Yes, Envy controls meadow, creeping and bulbous buttercup, although effects on bulbous buttercup are likely to be reduced.
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