Paddy Grain Discolouration - High Yields Agro

Symptoms

The grains may be infected by various organisms before or after harvesting causing discolouration, the extend of which varies according to season and locality.
The infection may be external or internal causing discoloration of the glumes or kernels or both.
Dark brown or black spots appear on the grains.
The discolouration may be red, yellow, orange, pink or black, depending upon the organism involved and the degree of infection.
This disease is responsible for quantitative and qualitative losses of grains.
Favourable Conditions:
- High humidity and cloudy weather during heading stage.

Management

Pre and post-harvest measures should be taken into account for prevention of grain discolouration.
Foliar spray of Neem oil @ 3 per cent at 50 % flowering stage followed by second spray 10 days later.
Seed treatment with Bacillus subtilis @ 10g/kg + one foliar spray with Azoxystrobin @ 100 ml/ac
at 50 per cent flowering for the management of sheath rot and grain discolouration.