Abstract
Seaweeds are macroscopic marine algae, which form an important component of the marine living renewable resources. They are utilized for the production of phytochemicals such as agar, carrageenan and alginate which are widely used as gelling, stabilizing and thickening agents in many industries like food, confectionary, pharmaceutical, dairy and textile. Plants which are growing with sufficient intake of all kinds of nutrients become insufficient on frequent cultivation on land; it is necessary to feed the plants with combined nutrients to increase the growth and yield of plants, quantity and quality. Recent researches proved that seaweed fertilizers are better than other fertilizers; they are very economic and cheap. Seaweed fertilizers are preferred not only due to their nitrogen, phosphorus and potash content but also because of the presence of trace elements and metabolites similar to plant growth regulators. Seaweed extracts are utilized to enhance seed germination and plant growth; seaweed extracts have been used to increase crop yield, improve growth and induce resistance to frost fungal and insect attack and increase nutrient uptake from soil.
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Nedumaran, T. (2017). Seaweed: A Fertilizer for Sustainable Agriculture. In: Dhanarajan, A. (eds) Sustainable Agriculture towards Food Security. Springer, Singapore. https://doi.org/10.1007/978-981-10-6647-4_9
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