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Effect of Seaweed Extract from Water, Methanol, and Ethanol Extraction as Biostimulant on Growth and Yield of Upland Rice (Oryza sativa L.) in Ultisol
Abstract
Seaweed extract contains polysaccharides, protein, unsaturated fatty acids, polyphenols, micronutrients, macronutrients, minerals and growth regulators that have the potential as biostimulants. This study aims to determine the effect of 4 seaweed species as biostimulants to increase the growth and yield of upland rice on ultisol soils and to determine the effect of solvent type on seaweed extract. The solvents used in this study were water, methanol, and ethanol with a sample-solvent ratio 1:20 (w/v). The data obtained were analyzed using a completely randomized design (CRD) consisting of 2 factors with 3 replications. Factor A is the type of seaweed which consisted of 1. Padina minor 2. Sargassum crassifolium 3. Sargassum cristaefolium 4. Turbinaria decurrens and factor B is the type of solvent which consisted of 1. Water 2. Methanol 3. Ethanol. The results showed that Padina minor was the best seaweed to increase the productivity of upland rice, which showed from root wet weight, grain weight per clump, and 100-grain weight. Methanol is the best type of solvent for extracting seaweed. The best interaction between the two factors is found in Padina minor dissolved in methanol
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DOI: http://dx.doi.org/10.52155/ijpsat.v30.2.4031
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