Effect of seaweed extract as organic fertilizer and its element composition on growth of Abelmoschus esculentus (L.) moench / Nasrur Rahman Mohamad Sidik

This study conducted to determine a way to replace the uses of chemical fertilizer to enhance the growth of the plant which can effects plant and human indirectly. The uses of seaweed as organic fertilizer to enhance the growth of the plant were being considered as we used two types of seaweeds, Kappaphycus alvarezii (Doty) and Euchema denticulatum (N.L.Burman) as an extract. Those two seaweed were been extracted at different concentration and added into the soil before planted the seed of Abelmoschus esculentus (L.) moench .The element compositions that present in the seaweeds were analyzed by using Atomic Absorbance Spectrophotometry (AAS). The data shows that less concentrated seaweed extract of 0.01 g/ml contain higher concentration of elemental composition compare to the more concentrated extract which is 0.02 g/ml. The comparison between both seaweeds samples by observing the growth rate shows that Euchema denticualtum (N.L.Burman) of 0.01 g/ml was more effective to enhance the growth of the plant compare to the more concentrated extract which is 0.02 g/ml.