Fields of cotton, wheat, sorghum and other crops are a common sight in the Texas HighPlains, but what you might not expect is to see drones whipping through the air above the fields. However, if you drive out to a field of cotton about 30 miles north of Texas Tech University, that is exactly what you might see. Wenxuan Guo, an assistant professor in crop ecophysiology and precision agriculture in Texas Tech University’s Department of Plant and Soil Science, is using the drones to study the effects of variable rate irrigation in cotton yields. “We know in this area water is the number ...