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1. Use and Misuse of Aerial ImageryThroughout the 1990’s agricultural researchers were hitting the sky’s collecting untold amounts of spectral data. The majority of that push quieted down in the early 2000’s as scalability was a constant struggle. However, in the past few years the introduction of affordable and easy to use unmanned aerial vehicles (UAV), more cost effective cameras, and significant increase in satellite constellations has reignited the interest in remote sensing that died out a decade... B. Arnall |
2. Does Sensor-based Nitrogen Management Maintain Crop Production and Decrease Nitrate-N Leaching?To improve water quality, nitrogen (N) management in corn production systems should shift from current N decision support system [maximum return to N (MRTN)] which suggests a single rate N addition to sensor-based (GreenSeeker) active N management (variable N rate approach). Single rate N recommendations often result in under- and over-N addition and either increase environmental N losses or cause corn yield penalty. Our objectives were to evaluate corn optimum nitrogen N requirement (EORN) in... A. Sadeghpour, M. Guzel, J. Mcgrath, O. Adeyemi, B. Arnall, O. Guzel |