Mathai, GPaily, P VMenon, M RKAU2019-07-302019-07-301981Agricultural Research Journal of Kerala, 19(1), 79-83.http://krishikosh.egranth.ac.in/handle/1/5810117824Results of field experiments conducted at Vellayani, Kerala during 1974 indicated that Hinosan was significantly superior in reducing sheath blight disease intensity and in increasing the yield of rice due to better disease control. Application of silioa (250 and 500 kg/ha) had significant effect in reducting the disease intensity on the 75th day of sowing. Crude silica content in the plant was high at the 40th and 80th day of sowing but was low on the 60th day. Positive correlation was observed between the amount of applied silica and the crude silica content of plant.ennullArticle