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UP / Thumb of Michigan | Joel, typically the only cover we had many acres of that needed a spring burn down was cereal rye. That would have been seeded into either corn or soy's the previous year. Always went to a broadleaf crop after seeding rye, I'll use soy's as the example of the cash crop going into the cover crop (rye) for this description.
As I've stated before, we found it dramatically easier to kill rye that was at least a foot high, 18" + plus was better. In those conditions, we were using glyphosate at a qt/ ac, usually Valor as a pre merge, and sometimes (very rarely with the Valor) we would add a little 2-4-D Ester. I liked to add a NI surfactant at a qt per 100 ga regardless of whether the glyphosate was loaded or not, and also had very good luck with one of those products that changed the charge of the water. There are many variations of those available. Using Turbo T-Jets and Greenleaf AI bodies, and never using more than 6 gpa of water. I don't think I'd like to add much UAN, not sure that a true long lasting burndown would be possible in our conditions.
A living cover crop ahead of corn was always attractive to me, but our problem was that we seldom had time to adequately burn anything down ahead of corn. Every time we tried to plant corn into anything green, we had problems of many kinds. Strictly an environmental issue for us northern growers, I don't think a living cover ahead of corn would be real hard to manage in your type of weather conditions. Just guessing on that one, though. | |
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burn down programs for cover crops
