Weed seed rain

Adam Davis asked 5 months ago

Is there a benefit to trying to manage weeds that have already produced mature seedheads? Is it possible to do this?

Lauren Lazaro replied 4 months ago

A proactive approach to weed management (not even allowing weeds to get to the point where they produce seedheads) is ideal. However, if there is an escaped weed with a seedhead, then trying to limit the amount of seeds that enter the soil seedbank is critical. The only options that you would have at this point would be to hand remove the weeds before seed shatter or to implement a harvest time weed seed control (HWSC) tactic. The main options with HWSC include narrow windrow burning, using a seed destructor or removing the chaff from your field all together with a chaff cart. All of these HWSC tactics will aid in reducing the number of weed seeds that enter into the soil seedbank.

For more information check out: https://www.uaex.edu/publications/pdf/FSA-2180.pdf

1 Answers
Lauren Lazaro answered 4 months ago

A proactive approach to weed management (not even allowing weeds to get to the point where they produce seedheads) is ideal. However, if there is an escaped weed with a seedhead, then trying to limit the amount of seeds that enter the soil seedbank is critical. The only options that you would have at this point would be to hand remove the weeds before seed shatter or to implement a harvest time weed seed control (HWSC) tactic. The main options with HWSC include narrow windrow burning, using a seed destructor or removing the chaff from your field all together with a chaff cart. All of these HWSC tactics will aid in reducing the number of weed seeds that enter into the soil seedbank.
For more information check out: https://www.uaex.edu/publications/pdf/FSA-2180.pdf