Table 2.

Visual rating scale used for four diseases and one pest severity found in the study field.

Rating scale	Description	Expression in terms of severity
1	No symptoms No infection	No infection
2	Very few signs and symptoms on leaves	Mild
3	Moderate signs and symptoms of old and young leaves, slight stunting	Moderate infection
4	Severe signs and symptoms about 60–75% of leaf area, plants stunted	Severe infection
5	Severe signs and symptoms on more than 75% of leaf area	Very severe infection severely stunted or dead plants