Improving Growth, Yield, and Quality of Tomato Plants (Solanum lycopersicum L) by the Application of Moroccan Seaweed-Based Biostimulants under Greenhouse Conditions

Background: Seaweed-derived extracts have gained popularity in agriculture as bioproducts with phytostimulatory effects on plant growth and development. Methods: This study assessed the effect of polysaccharide-enriched (PEEs) derived from six Moroccan seaweeds tomato growth, yield, fruit quality. PPEs were applied to plants soil drench a greenhouse experiment. Growth parameters including height (cm) number leaves, flowers, flower buds recorded every 15 days. Yield quality harvested fruits also after each harvest. Results: The obtained results showed that all PEEs improved treated plants. According principal component analysis, presence SO4, galactose, glucose, maltose characterized polysaccharides was closely associated their parameters. Conclusions: Gelidium crinale,Schizymenia dubyi, Fucus spiralis, Bifurcaria bifurcata exhibited highest biostimulant could be used for yield nutritional