Now is the Time to Scout Your Fields

August 5, 2022 volume 20 edition 1

Corn Rootworm

Now is the time to scout for gravid female rootworm beetles. Proper and timely scouting is the key to controlling the population with the timely application of insecticide. Applying insecticide during peak populations results in longer-term control.

Steward EC Insecticide offers 30-day control post application when applied at 10 ounces per acre. Offering double the residual to other alternatives. Steward is your best insecticide option if you've missed peak population application.

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Grasshopper Control

The defoliation-based threshold for vegetative plants, prior to flowering, is to treat if grasshoppers are present and defoliation has reached or exceeded 30%. For reproductive plants, flowering to pod fill stage, treat if grasshoppers are present and defoliation has reached or exceeds 20%.

For grasshopper control, AFS recommends Asana XL at a rate of 6.4 ounces per acre for optimum effectiveness.

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