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LAKE COUNTRY CO-OP AGRO TRUSTED ADVISOR QUICK HITTER

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Key Take-Aways for Top Dressing UAN to Boost Protein in Wheat

 

With protein premiums rising on low protein years, top dressing UAN is becoming a more popular topic! Here are some key take-aways for top dressing your wheat for a protein boost:

  • Using a flat fan nozzle, apply a 50/50 mix of up to 10us gpa (up to 8.33imp gpa) of 28-0-0 UAN & Water – Using more water is ok, as it will reduce leaf burn.

  • Avoid application during the heat of the day. Shoot for an early evening application, when temperatures cool off & wind is minimal.

  • Ideal crop application timing is 5-7 days post anthesis (flowering). Do not tank mix with fungicides at this point, as FHB timing has already passed.

  • The probability for a crop response is approximately 80%. A grain protein increase of only 0.5-1.0 point should be expected with the addition of 30lbs of nitrogen per acre.

Top dressing for protein may not be justified every year, but instead on years where high protein grain is at a premium. A split application of N may help mitigate risk & manage cost - for example a yield goal of 80 bushels wheat, using the crop nutrient uptake rate of 2.3lbs/bu, requires 184lbs of actual N, which can result in a fairly substantial cost at or prior to seeding. Our “Grow Team” offers a range of both soil & tissue sampling in order to further aid in the decision of top dressing your wheat for protein. Contact your Grow Team Advisor for more information!

To learn more, contact your Lake Country Co-op Grow Team Member. Published July 2021, Shyla.