Rainy weather during the in-crop weed control season can make it difficult to give corn want it wants to maintain maximum yield potential: that long critical weed-free period.
The difference between fields that received pre-emerge applications and those that did not is quite noticeable in southern Manitoba (and many other areas) this year, as regular rains have prevented timely in-crop spraying, while activating pre-emerge residual products that did get applied.
As part of this Corn School episode, Jason Voogt of Field 2 Field Agronomy and Jeanette Gaultier of BASF take us into a field near Starbuck, Man., where the sprayer had to leave the field due to rain, creating some clear comparisons in the same field.
“With all the moisture that we have had, it’s helped these pre-emerge products work very effectively. And so this was a great opportunity to talk about how important these pre-emerges are,” notes Voogt. “We can see it here in the exact same field, side-by-side treated versus none, and it’s pretty dramatic.”
Corn is a great crop for swapping out active ingredients that are relied on in other crops, notes Gaultier.
“For example, if you’re using group 2s in a lot of other parts of your rotation, that’s an easy one to swap out and into some of the other unique modes of action like group 27s, for example, which might not be offering that residual, but they do have a good weed spectrum,” she notes. “It’s a unique mode of action and then we can tank mix them back in with something that maybe does have residual if that’s what you’re looking for.”
Watch/listen Voogt and Gaultier discuss the value of pre-emergent herbicides in corn in providing that critical weed-free period, as well as flexibility in-season and improved herbicide resistance stewardship in this new Corn School episode:
Dig into the Corn School library here.
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