Studies on the biological and chemical control of sheath blight disease in rice [India]
1987
Kannaiyan, S. (Tamil Nadu Agricultural Univ., Coimbatore, Tamil Nadu (India). Dept. of Agricultural Microbiology)
Sheath blight disease caused by Rhizoctonia solani is a serious disease occurring in many rice growing areas in India. The pathogen affects both rice seedlings as well as transplanted crop. The seedlings infection was severe under low moisture level from 30 to 60% and declined at higher moisture levels. The addition of organic amendments viz. rice chaff, neem cake, mustard cake, saw dust and farm yard manure reduced the seedling infection. Application of potassium chloride to rice seedlings reduced the seedling infection. Sulphur containing amino acids such as cystine, cysteine and phenolic compounds catechol, ferulic acid and hydroxy cinnamic acid have inhibited the growth and sclerotial production of R. solani. Potassium alone or phosphorus in combination with potassium shortened the survival periods of R. solani. Benlate, Demosan, Brassical and Captan were found to be inhibitory to saprophytic survival of R. solani in soil. Soil drenching with Hinosan, Kitazin and Benlate during maximum tillering phase controlled the disease. Benlate, Bavistin, Hinosan, Kitazin and Demosan at 0.05, 0.1 and 0.2% foliar application controlled the disease. Treatment of rice seeds with Bavistin, Daconil, Vitavax, Demosan reduced the seed-borne infection of R. solani.
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