a) Root rot disease:

- Caused by Gandoderma lucidum

- It causes heavy mortality in Khair plantation raised after clear- felling (estimated upto 45% in first 9 yrs.)

- Spread out by old infected roots to new roots

Symptoms

- Tree becomes yellow.

- Appears white layers in between wood & bark region.

Control measures

- Old root should be dogged out in plantation.

- Isolation trenches 1.5m along across the line including all diseased plant, can be dogged out to control infections.

- Resistant sps. like Semal & Ailanthus can be planted with Khair as mixed plantation.

b) Heart rot disease

- Caused by Fomes badius

- Stem are injured by them.

Symptoms

- Hollowing of bole.

- Becomes yellow spongy after decaying

- Appears ear shaped basidocarp on branches & stem.

Control measures

- Affected trees should be regularly removed in markings

- Sporophores should be collected & burnt

- Reducing source of inoculum by salvage cutting.