Winniefred Griffin

DAP days after planting EMR electromagnetic radiation NDRE normalized difference red edge NDVI normalized difference vegetation index NIR near-infrared 1 INTRODUCTION Nitrogen (N) is a vital nutrient for crop production, playing an essential role in various plant molecules, including amino acids, chlorophyll, nucleic acids, and phytohormones (Anas et al., 2020). Each chlorophyll molecule contains four N atoms, highlighting the critical function of N in photosynthesis.

ANOVA analysis of variance NDVI normalized difference vegetation index NIR near-infrared nRMSE normalized RMSE PNM potential N mineralization POXC permanganate oxidizable carbon RMSE root mean square error SD standard deviation SOM soil organic matter SSG sorghum sudangrass UAV unmanned aerial vehicles 1 INTRODUCTION Nitrogen (N) recommendations for corn (Zea mays) in Florida are currently set at 235 kg N ha−1 (Mylavarapu et al., 2013), but growers typically exceed these recommendations...