Productivity and Quality Variations in Sugar Beet Induced by Soil Application of K-Humate and Foliar Application of Biostimulants Under Salinity Condition

Abstract Abiotic stresses are the most major limitation to crop production, causing yield losses up 50%, and consider challenges for production of crops. Thus, an experiment was conducted determine how sugar beet would respond soil application K-humate rates foliar biostimulants under salt stress. Split-plot design in three replicates used both seasons, where fertigation (control, 12, 24 kg ha −1 ) allocated main plots, different BS arranged within subplot (i.e., (1) water spray, (2) salicylic acid (SA) at rate 100 mg L , (3) fulvic (FA) 1.2 (4) hydroxyproline (HP) 1000 (5) SA + FA (6) mg/L HP (7) (8) two seasons. The finding results revealed that K-humate, BS, their interaction significantly affected yield, growth, quality characteristics salinity, furthermore with spray recorded highest growth traits, top, root, sucrose %, yields/ha lowest values Na content juice study conditions, Alexandria, Egypt.