During late summer I collect blackgrass seed. Some I use for my own purposes the rest goes for resistance testing.
Discussion surrounding blackgrass control are often made complex and confusing; seldom is it simplified and made practical.
The idea is always to either bury it deep or get it to germinate so that you can kill it with Glyphosate before planting your next crop.
Complex factors determine seed germination. Germination being driven by both genetic determinants and the environment surrounding the seed.
But how you treat the field after the combine has left has a profound effect on whether the shed blackgrass seed comes up in your next crop – or not and hence how much money you have to spend to control it.
It really can be that simple to alter the germination pattern and hence the amount of blackgrass you see in next year’s crop; with the right advice!