Waiver comes after in-person testing is canceled through March 31, based on social distancing recommendations.
Jack Whittier has served in the role since 2014; his last day will be June 30.
Iowa study compares two high-speed planting systems versus a conventional seed metering system.
Restrictions apply and the new use is limited to specific counties in 25 states.
More than 900 users worldwide have downloaded the app so far.
Federal COVID-19 legislation allows states to increase truck weight limits during the pandemic.
Database looking at pH balance and water hardness in farm pesticide spray water across Arkansas