Effect of Brown Seaweed in Powder and Extract Forms on Growth and Yield of Chinese Kale

Abstract

Brown seaweed is generally found on the beach in Chanthaburi province. Brown seaweed can be used as a bio-stimulant for plant growth enabling the reduction cost of crop production. This experiment aimed to study the effect of seaweed in the forms of powder and extract on the growth and yield of Chinese Kale. Each experiment was conducted in three replicates and designed by CRD with 7 treatments, consisting of control, spraying of seaweed powder at 1%, 2%, and 3%, respectively, and spraying of seaweed extract at 1%, 2%, 3%, respectively. Total amino acid and plant nutrients (N, P, and K) of seaweed powder were analyzed prior to the experiment. Plant growth parameters were recorded at three intervals: 18, 25, and 32 days after transplanting (DAT). Fresh and dry weights of Chinese kale were measured after harvesting at 32 DAT. The results showed that brown seaweed at 2% either in in powder or extract forms can be used as a bio-stimulant for Chinese kale production without any significant difference.