Brief Research ReportPublished 8 October 2026Enhancing growth and physiological performance of Theobroma cacao plantlets with biostimulant extracts from Acanthophora spicifera and Ulva spTatiana Chavez-Navarrete · Byron Briones-Avilés · Liliana Villao · Efrén Santos-Ordóñez · Diego Portalanza · Julio BonillaFrontiers in Agronomydoi 10.3389/fagro.2026.1957460