Grass weeds should really have been controlled by now, but, no doubt, as farmers harvest crops, they will come across weeds that they did not know they have.
Keep a notebook on the combine to note the weed and the location.
Take a look through some of the pictures below to see if you recognise any of the grass weeds outlined.
These are some of the more difficult to control grass weeds and if found, they should go up into the combine. They should be pulled.
One blackgrass plant, for example, has 6,000 seeds, so it can spread the weed seed rapidly.
There is no fully successful control for any of these weeds when it comes to herbicide, so the best way to keep on top of them is to stop them before they become a problem.
Take a look through the images below and watch out for them off the combine and in gaps.
Blackgrass
Blackgrass has a thick stem of heads that turn black when going to seed. Blackgrass is a noxious weed, so it must be controlled.
Italian ryegrass
Italian ryegrass has a long head of seeds and can get out of control very quickly.
Canary grass
A short head filled with seeds. Spreads rapidly and costly to control in spring.
Wild oats
Well known by all. Wild oats are a noxious weed and legally should be controlled by all growers. A broader seed head than commercial oats with a poorer seed.
Sterile brome
Broad head, turns purple by harvest when it is going to seed. Thin seeds. Hard to pull in a crop, as it gets tangled up into the commercial crop.
Soft brome
Looks more like a ryegrass plant than its relation sterile brome. Stands up taller than sterile brome.
Look out for other weeds
There are many other weeds to look out for and develop a plan to control for as well, such as annual meadow grass and more members of the brome family, as well as scutch grass.
Farmers should also examine how their broad-leaved weed control worked to see if products or timings need to be change in the future.
Watch out for chickweed, corn marigold, poppies, thistles, speedwell and anything that was not controlled by the herbicide.