Marilactone is primarily used in agricultural chemistry as a plant growth regulator. It helps in enhancing root development and improving stress resistance in crops under adverse environmental conditions such as drought or salinity. Due to its lactone structure, it exhibits hormonal activity that influences cell elongation and differentiation, making it useful in seed treatment and early-stage crop management. It is also being explored for its potential in increasing the efficiency of nutrient uptake in plants, thereby supporting sustainable farming practices with reduced fertilizer dependency.