Seaweed extracts have been reported to improve the yield and quality of different fruits and vegetables. In order to utilize the rich seaweed resources to enhance the vegetable production a field experiment was conducted during postmonsoon season to study the effect of seaweed extract (SWE) applied as a foliar spray (conc. 1%, 2% and 4%) on okra (Abelmoschus esculentus L.) along with basal application of compost. The study indicated significant increase in plant growth, yield and nutrition quality of okra fruit due to foliar application of SWE over control. Among the treatments, 2% SWE application recorded 46% increase in fruit yield compared to control whereas it was 21% higher than only compost addition. Similarly 2% SWE application also increased carbohydrate (24%), protein (100%), dietary fibre (43%) and vitamin-C (46%) content of fruits due to enhanced root biomass and plant bio-physiological activities. The study established the potential of SWE in low input vegetable production under island condition.