Northern Research and Demonstration Farm
The objectives of this project were to measure corn yield response to nitrogen (N) fertilizer when applied during the V10 corn growth stage, and compare yield and N use efficiency between pre-plant N (PP-N), pre-plant + sensor N (PP+S-N), split N strategy (SNS), and rescue N strategy (RNS). The study was conducted using two crop rotations (corn-soybean and continuous corn) at multiple research farms. In-season applied N was urea treated with Agrotain® .
Iowa State University
Barker, Daniel W. and Sawyer, John E., "In-season N Fertilization Strategies using Active Sensors" (2013). Iowa State Research Farm Progress Reports. 1966.