Agronomic and Hyperspectral Characterization of Onion (Allium cepa L.) in Response to Foliar Salicylic Acid Under Arid Conditions
Salicylic acid (SA) is a plant signalling compound that may enhance crop growth and productivity, while hyperspectral reflectance provides a non-destructive approach for characterizing plant optical and physiological variability. A two-season field experiment was conducted to evaluate the effects of foliar SA applicati...