Author: Philip Kennedy
After second cut silage presents an ideal opportunity to control docks and chickweed in grassland. Weeds are soft and growthy after recent fertiliser applications and rain. An actively growing weed takes in chemicals a lot more efficiently, which will help achieve great weed control. Outlined below are various solutions to control these weeds.
Nettles, Thistles, Ragwort, Dandelions, Daisies and Rushes are some of the most problematic weeds to watch out for. When controlling these weeds it is important to spray in good growing conditions with a minimum of 8 degrees average temperature or more if possible. The growing stage of the weed is also important i.e. if the weed is flowering, it is more difficult to control so it needs to be sprayed before this point. When spraying docks, the leaves should be lush green and not much more than 3 to 4 centimeters wide. Docks also thrive when the soil is low in calcium and high in magnesium so this might be worth investigating if you have a particularly bad infestation.
The best time to control docks is in a new reseed with a product such as CLOVERMAX (2,4D + MCPA). It should be applied around 4-6 weeks post sowing at a rate of 7l per ha with at least 200l per ha water volume. When applying a herbicide on grass, it helps to apply some fertiliser close to spraying as this will decrease any negative effect on grass growth and encourage weeds to grow and take chemistry into the plant more effectively, thereby encouraging a better kill out.
Weed Control Solutions
- Eagle is an effective dock control solution if you also want to try and save clover. Most dock sprays will kill clover.
- Pasture pack represents a new concept in grass weed control. The tank mix option for Thrust (2,4D + Dicamba) and Tandus (Fluroxypyr) allows farmers to reap the benefits of three different active ingredients, providing a cost-effective solution to Docks, Nettles, Dandelions, Daisies and Chickweed.
- D50 (2,4D) provides excellent control on Ragwort which is poisonous to animals. This must be applied at the rosette stage in March or April and animals must be kept off the field until the weed has withered away.
- Agritox (MCPA) is a good option for the control of Charlock, Thistle, Fat hen, Buttercup and Rushes. If you are using it for the control of Rushes, it is recommended to use a sticker such as Kantor due to the waxy nature of the rush. For best control, Rushes should be sprayed when young and ideally growing.
- Minstrel (Fluroxypyr) is good on both docks and chickweed.
Some products can be used in conjunction with each other and our Cooney Furlong Farm Representatives are available to discuss your specific weed control options.
The full Corteva range is also available in the Cooney Furlong Grain Branches as follows.
For a full list of details on each herbicide, click here.
To view more articles from our Summer Newsletter, please click here.