Application of glycine, folic acid, and moringa extract as bio-stimulants for enhancing the production of ‘Flame Seedless’ grape cultivar

In this study, 130 uniform ‘Flame Seedless’ grape trees were selected for and subjected to the same cultural practices. The sprayed three times, before flowering, during full bloom, weeks later with following treatments: control (water only), 250, 500, 750 ppm glycine; 50, 100, 150 folic acid (FA); 2%, 4%, 6% leaf moringa aqueous extract (MLAE); their combinations. High-performance liquid chromatography (HPLC) analysis of (MLAE) showed presence phenolic compounds ellagic acid, vanillic p-hydroxy benzoic catechol, gallic values 54.18, 18.79, 14, 12.32, 12.12 mg/100 g, respectively. obtained results that foliar spraying glycine, 4% MLAE, combinations glycine 500 + FA 100 MLAE significantly increased shoot length, thickness, chlorophyll content, yield, fruit quality over control. Glycine at was best treatment followed by compared other applied treatments in both experimental seasons.