Abstract
Applying biostimulants to plants can improve their physiological functions, promoting growth and decreasing the impacts of stress factors on plants. Seaweed is one of the biostimulant sources that are widely explored on crops recently. Seaweed extract can improve plant growth at all stages including, germination, harvest, and even post-harvest. A variety of beneficial compounds in seaweed extract stimulates plant growth such as minerals, secondary metabolites, growth-promoting hormones, vitamins, and other bioactive compounds. A recent study showed that there are several factors affecting the effect of seaweed extract on crops such as types of seaweed, types of plants, concentration, and extraction method of seaweed extract. Several research reported that biostimulant can be more effective in combination with other bioactive compounds. Concerns about the effectiveness of this biostimulant are required in order to find the best formula for increasing plant development.
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