• Thamarai Selvi M
• Chandrika R
• Rajamohan K
• Udhayakumar R
• Sanjaygandhi S

The present studies were undertaken to investigate the effect of certain sew weed extracts for the management of Sheath blight under in vitro conditions. Two brown and red sea weed species and a green sea weed were tested against Rhizoctonia solani under laboratory conditions for spore germination assay. The results revealed that, among the five seaweed extracts tested against R. solani, extracts of Sargassum wightii [brown seaweed algae]at a concentration 20 per cent was found to be the best in the reduction of spore germination and it was followed by a concentration (20%) of Dictyota dichotoma [brown seaweed algae] 20 per cent concentration. The least reduction recorded in Acanthopora spicifera [Red seaweed algae]at all concentrations (5, 10, 15 and 20%). The same results were recorded in paper disc and agar well method.

Rice sheath blight, Sea weed extract, Plant disease management, Sustainable approach

"EFFICIENCY OF SEAWEED EXTRACTS FOR THE CONTROL OF SHEATH BLIGHT OF RICE CAUSED BY RHIZOCTONIA SOLANI [Kuhn]", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.247-251, February-2019, Available :http://www.jetir.org/papers/JETIR1902137.pdf

"EFFICIENCY OF SEAWEED EXTRACTS FOR THE CONTROL OF SHEATH BLIGHT OF RICE CAUSED BY RHIZOCTONIA SOLANI [Kuhn]", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp247-251, February-2019, Available at : http://www.jetir.org/papers/JETIR1902137.pdf