Since 2008 I have served as the Precision Nutrient Management Extension Specialist for Oklahoma State University. I work in Wheat, Corn, Sorghum, Cotton, Soybean, Canola, Sweet Sorghum, Sesame, Pasture/Hay. My work focuses on providing information and tools to producers that will lead to improved nutrient management practices and increased profitability of Oklahoma production agriculture.
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Latest Posts
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Cheap Nitrogen is not always the best Nitrogen, Timing matters
Brian Arnall: Precision Nutrient Management Extension Specialist, Oklahoma State University In 2020, we published a summary of four OSU trial series comparing pre-plant nitrogen (N)…
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Be on the Lookout: The Pasture Mealybug (Heliococcus summervillei), An Emerging Threat to Pasture and Hay
Ashleigh M. Faris1, Kelly Seuhs1, and Kenny Naylor2 1Department of Entomology and Plant Pathology, Oklahoma State University 2Consumer Protection Services, Oklahoma Department of Agriculture, Food,…
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Oklahoma Nitrogen Prices Continue to Move Lower 8.10.26
Nitrogen prices continued to decline in Oklahoma during the past two weeks, led by anhydrous ammonia. The statewide NH₃ reference fell $72 per ton to…
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OSUNPK Fertilizer Market Outlook — July 27, 2026
Produced by Chat GPT Work, reviewed by Brian Arnall, OSU Precision Nutrient Management. Oklahoma fertilizer markets moved in two different directions during the latest reporting…
Down and Dirty with NPK 
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