The Aspect of Yield Reduction Caused by Blast-Rotten-Neck in Rice Plant.

摘要

In the rice plant infested by the rotten-neck disease at early or middle stages of its ripening, the fertilizing and ripening abilities of flower decrease to 60%-80% of that in healthy plant. When the plant is attacked at later stages, these abilities were kept at higher levels than those above mentioned. The aspects vary, however, according to the location of the infested part on the pancile.