• P. Francisca
• R. Kavitha
• A. Auxilia
• V. Kayalvizhi

One of the important abiotic factors affecting the growth and productivity of plants is ultra violet radiation. The bioactive substances derived from seaweeds impart stress tolerance in plants. This experiment was designed to analyze the efficiency of the seaweed liquid fertilizer as radio-protectant which helps the plants as a damage controlling agent in addition to its nutrient value. Cowpea plant (Vigna unguiculata (L.) Walp.) was used as the experiment plant; the plants grown in pots were supplied with 1% liquid seaweed fertilizer through roots and as foliar spray and they were exposed to U-V light for one hour. Growth and Biochemical parameters were analyzed on 30th day after the treatment. Shoot length, root length and leaf area were very much reduced in UV treated plants. Similarly there was a reduction in chlorophyll and protein contents, a reduction in catalase and peroxidase activities. But this reduction was not observed in plants treated with UV light and supplemented with seaweed fertilizer. The above said parameters showed even better results than the control. On the other hand the aminoacid content was found to be increased under UV stress as well as the plants supplemented with seaweed fertilizer. This present study clearly manifests the potentiality of the seaweeds which can be used as prospective agents to mitigate the harmful effects of UV radiation.

Ultra violet radiation, seaweed liquid fertilizer, radio-protectant, Vigna unguiculata

"Efficiency of seaweed fertilizer as Biostimulant and Radioprotectant on growth of Vigna unguiculata (L.) Walp.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.138-144, January-2019, Available :http://www.jetir.org/papers/JETIR1901818.pdf

"Efficiency of seaweed fertilizer as Biostimulant and Radioprotectant on growth of Vigna unguiculata (L.) Walp.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp138-144, January-2019, Available at : http://www.jetir.org/papers/JETIR1901818.pdf