I planted this little patch on 6/5, the day before it started raining. I sprayed it on 6/28 at a rate of 1 oz Milestone and 10 oz Clethodim. It seemed to zap every blade of grass, but the morning glories were only damaged. After a week, it looked like they were going to really compete with the chufas in some sections of the field, so I sprayed them again on 7/10 using just Milestone at 2 oz per acre. I should have just used that rate in the beginning, as the morning glories are the biggest weed problem in the field.

The only thing competing with the chufa now is carpetweed. I have not found a herbicide that does a good job of controlling it without damaging the chufas. Has anyone? One thing about carpetweed is that it doesn't seem to outcompete the chufas and they will still make ok with it as an understory. But I'm sure they take up nutrients and lower the yield. You get rid of one weed and create ideal conditions for another to replace it.