USO DE EXTRATOS DE ALGAS NO CULTIVO DE SOJA: TIPOS, BENEFÍCIOS, BARREIRAS DE ACESSO E IMPACTOS NA PRODUTIVIDADE

Abstract

Modern agriculture seeks sustainable solutions to increase crop productivity and resilience, and seaweed extracts have emerged as a promising alternative as biostimulants. These products, rich in bioactive compounds, promote plant growth, improve nutrient uptake, and increase tolerance to abiotic stresses such as drought and salinity. In soybean (Glycine max) cultivation, studies indicate yield increases ranging from 6% to 18%, associated with physiological and agronomic improvements. The species Ascophyllum nodosum and Kappaphycus alvarezii stand out for their positive effects, although they differ in composition and outcomes. However, challenges such as the geographic limitations of harvesting, production costs, sustainability of resource extraction, and the need for controlled cultivation technologies hinder their widespread adoption. Through a systematic literature review, this study analyzes the qualities, mechanisms of action, challenges associated with obtaining these extracts, and their productive impacts on soybeans, providing practical insights to optimize their use and identifying gaps for future research. Thus, seaweed extracts represent a relevant strategy for achieving more efficient, resilient, and sustainable agriculture.

Keyword: Ascophyllum nodosum; biostimulants; algae extracts; Kappaphycus alvarezii.