On behalf of a strip-tilling friend in South Africa, I am posting a question regarding weed control. He currently strip-tills 90% of his crops. However, he is finding a difference in the weed control between strip-till and conventional fields. He's attempted to find some research regarding differences in herbicide use, either quantity or timing of applications? Anyone know whether there has been research done that has quantified or attempted to quantify the difference in unwanted plant populations as well as the difference in herbicides? Any assistance would be appreciated. Thanks!