Measurement of Faba Bean Diseases

3.8. Scale for Rating Bean Leaf Roll
DESCRIPTION
DISEASE RATING a/
Foliar Symptoms
None
0
Mild
1
Moderate, pronounced leaf rolling and slight chlorosis
2
Severe leaf rolling, leaves greatly reduced in size and severe chlorosis
3
Stunting  
None
0
Slight
1
Moderate
2
Severe
3
Pod Setting
None
0
Slight reduced
1
Greatly reduced
2
No pod setting
3
a/ Scale is 0 to 9, 1=highly resistant, 3= resistant 5 = moderately resistant, 7 = susceptible, and 9 = highly susceptible. The score is a composite rating of foliar symptoms, necrosis and stunting.
 
Contents
Cover
Table of Issues
Home