Inhibitory effect of cow urine based plant extracts against Rhizoctonia solani causing sheath blight of rice.

摘要

Seventeen medicinal plant extracts prepared in cow urine, hot water and cold water were evaluated in vitro and in vivo against Rhizoctonia solani, the causal agent of sheath blight of rice. Irrespective of medicinal plants species, extracts prepared in cow urine were found significantly more efficacious in arresting the mycelial growth as well as in checking the disease severity compared with cold water and hot water extracts. In vitro, cow urine based extracts of P. corylifolia and S. suaveolens were significantly more effective whereas, in vivo, extracts of P. corylifolia, A. racemosus and C. forskohill were highly efficacious and at par with hexaconazole. Moreover, cow urine extracts of C. gladiata, P. corylifolia and S. suaveolens were more consistent and showed Identical results under in vitro and in vivo.