Utilizing Optical Satellite Imagery to Monitor Temporal and Spatial Changes of Crop Water Stress: A Case Study in Alfalfa

Since the 1980s, thermal imagery has been used to assess crop water stress. The increase in temporal resolution of optical satellite sensors (in range 400–2500 nm) and better spatial compared call for definition a new way stress monitoring. Hence, we are suggesting method utilizing spectral indices from three subsequent images address this challenge. This predicts current with two past compares it stress: if existing conditions than predicted stress, is not under sufficient development. To evaluate suggested method, downloaded Sentinel-2 found that leaf area index, potential, yield seven alfalfa growth cycles. results outline ability index depict changes especially illustrated over cycle after each irrigation. needs be validated different crops verify its success.