1. Plant Diseases Diseases are caused by the following biotic factors:
1. Bacteria
2. Fungi
3. Viruses

2. Disease attacks at the soil line.

3. A type of mold.

4. Black lesions on leaves.

5. Affects the plant roots and causes plant to wilt.

6. Grey- whitish powder found on leaves.
Powdery Mildew
Description: White powdery growth that occurs on leaf surfaces due to groups of spores.
Kind of disease: Fungal
Damage to plant: Disease robs the nutrients from the plant tissue and weakens the plant.

7. Discoloration of the leaf