Influence of host factors on sheath blight of rice.

摘要

The influence of the age of seedlings (20, 30, 40, 50 and 60 d) at the time of transplanting, growth stages of the plant (seedling, max. tillering, booting and milk) and position of the leaves (flag leaf, second and third leaf from the top) were investigated for sheath blight (caused by Rhizoctonia solani) development in rice. Seedlings of 20 and 30-d-old were the most susceptible. Disease severity was higher at the max. tillering stage. The second and the third leaves from the top were the most severely infected and developed banded blight symptoms.