May 18, 2024

Oklahoma State University. Plant & Soil Sciences

As a member of the CAP project I am primarily responsible for the winter wheat NUE aspect of OSU’s commitment. With a background in soil fertility and optical sensors I have been involved in setting the nitrogen rates to obtain the proper ranges in nutrient level to better understand nitrogen use efficiency. In addition I have been directly involved in the selection and implementation of the canopy reflectance equipment that will be used in this CAP project. My extension, teaching, and research efforts are focused on nutrient management in all of Oklahoma’s cropping systems with an emphasis in site specific techniques. I work closely with extension educators and industry personnel to improve nutrient management practices in Oklahoma that will lead to increased profitability of Oklahoma producers.
Currently there are several ongoing studies that are focused at developing methods to use sensor based technologies in cotton production, the ground truthing sensor technologies in wheat and corn and the evaluation of products which are on the market in Oklahoma.

For more information see
Departmental page:
Extension website:

Daryl Brian Arnall
Precision Nutrient Management Extension Specialist