rancherfred said:
Since you are quite a bit further north than we are I am not real sure when you would start seeing green up. Cheat will normally start showing signs of life for sure by mid-April here. We try to hit it as soon as it is green, if it hasn't been sprayed in the fall already. Since we are in a 100% no-till system we aren't trying to do anything with the disc. However, I remember well the impossible job that it was to kill cheat by discing.
Would it be possible to not till the area that you are having trouble with cheat in? Just go in and spray it w/ glyphos as soon as it starts greening up, when it is as small as possible and then hit it again with glyphos, if you need it, a few days before you plant your crop. Avoid tilling the area at all if it is possible because every time you run over that with a disc you will be planting more cheat seed. I don't know what your soil conditions are or if it is even possible to try to no-till even a small area, but that is what will probably give you the best chance of cleaning it up.
I'm not a big fan of no-till, but I do think no-till is good in certain applications. After reading all the posts, I have to agree with
rancherfred, no-till would be the best option. You should be able
to get a good kill with 10-16 oz of glypos product in early spring
when the cheet is just good and green. It should be green before
the other plants are except maybe a tame grasses. I do know in this
country the ground has to be pretty cool for the cheet grass to sprout.
That is why you most generaly see it in the spring or fall. Very
seldom you find new growth cheet in the summer. It might take
several years to clean it all up.