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Additional Application of Late-Season Nitrogen to Winter Wheat

Additional Application of Late-Season Nitrogen to Winter Wheat

By Laura Lindsey and Ed Lentz

We’ve had several days of extremely wet weather, and there are some questions regarding the need for additional nitrogen fertilizer. Last week, wheat was between Feekes 8 and 10.2, depending on the area within the state. At this point in the growing season, additional nitrogen fertilizer applied to winter wheat is unlikely to increase grain yield.

As a reminder, nitrogen should be applied to wheat between green-up and Feekes 6 growth stage. Between Feekes 5-6 growth stage, wheat plants begin to rapidly take-up nitrogen from the soil. Nitrogen fertilizer can be applied as late as Feekes 7 growth stage if wet weather prevented an earlier application, but mechanical damage can occur from applicator equipment.

Source : osu.edu

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