Phytochemical Profile and Activity against Fusarium Species of Tamarix gallica Bark Aqueous Ammonia Extract

French tamarisk, Tamarix gallica L. (family Tamaricaceae) is a deciduous tree that, like other halophytes, grows in wide variety of saline habitats thanks to its powerful phenolics-based antioxidant system. Given that properties are usually linked the presence compounds with antifungal properties, work presented herein antimicrobial activity T. bark extract was investigated against four phytopathogenic species genus Fusarium. According results gas chromatography–mass spectroscopy, phytochemical profile aqueous ammonia included 1-(2,4,6-trihydroxyphenyl)-2-pentanone; 3,5-dimethoxy-4-hydroxycinnam aldehyde; trans-squalene; 4-hydroxy-3,5-dimethoxy-benzaldehyde; dihydro-3-methylene-2,5-furandione; 1-(4-hydroxy-3,5-dimethoxyphenyl)-ethanone; and 4-hydroxy-3,5-dimethoxy-benzoic acid as main constituents. Concerning vitro activity, EC90 effective concentrations 335–928 μg·mL−1 range were obtained F. acuminatum, culmorum, equiseti, graminearum, remarkably lower than those two conventional fungicides (viz. mancozeb fosetyl-Al). The tested further wheat maize grain protection bioassays, confirming treatment effectively controlled graminearum at concentration 375 µg·mL−1. this promising extracts may be susceptible valorization natural sustainable biorational for Fusarium spp. control.