Last year I sprayed a group one chemical for wild oats on barley, I was extremely upset since I don't feel it did it's job. This year my crop inputs gentleman gave me a group one chemical for grassy weeds on my wheat, on the same field. Is the chemical weaker for the barley compared to the wheat chemical? I didn't want to second guess his decision so I just sprayed it anyways. The chemical I sprayed on this field was bengel 120c I think.