Burndownd Timing Gaining Flexibility Mar 21, 2018 The growing season seems to be sneaking up on me. I was getting into the mood with a nice mild February and even an 80 degree day in there somewhere but now, facing the second snow of March and possibly a third one early next week, it sure seems like the middle of winter. Still, no time is lost yet. Our first job in the field is going to be land preparation which for most of our acreage involves burndown. There is not any new chemistry to discuss in this area; however, with the strong advancement of both enlist and Xtend technologies; we have a new option of delaying our burndown trip until much closer to planting. Advantages of delaying burndown would include:
The spring weed flushes would begin emerging
Better mulch covering the ground to help with weed control and moisture retention
More organic matter will help this sandier soil over time
Allows a once over trip for folks that have been making two trips
One primary two challenge from delayed burndown is that the weeds that germinated in the fall could be getting quite large, although they have not grown much in March. It would certainly require the full rates of the herbicides you choose. Another challenge is related to the benefit of having heavier and deeper mulch. Getting good soil seed contact is critical so having a planter that can accomplish this in heavy mulch is essential for cotton. The best fit is the lightest soils. Over the years, the heavier land particularly with annual bluegrass is going to benefit less from the advantages of delayed burndown and be challenged more from the downside issues.
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