Ken from Jefferson City, Mo writes
Roundup QuikPRO is the strongest form of roundup and it contains Diquat. The rule to roundup ready corn is that glyphosate-only agricultural herbicides can be applied broadcast up to the V8 growth stage or 30-inch tall corn, whichever comes first. Since Roundup QuikPRO has the extra active ingredient in it, it cannot be used on the roundup ready corn.
Answer last updated on: 12/27/2021