Symptom differential
Interveinal Chlorosis
Interveinal chlorosis means tissue between veins becomes paler while veins remain comparatively greener. The leaf age where it begins and the root-zone context are critical evidence.
Pattern questions
- Does it begin on older, middle, or newest leaves?
- Are the veins truly greener or is the whole leaf fading?
- Is necrosis developing between veins?
- Is the pattern symmetric across the leaf?
Plausible cause categories
- Nutrient availability or transport
- Root-zone pH effects
- Root injury
- Genetic leaf coloration
- Some disease or toxic effects
Discriminating checks
- Map symptom onset by leaf age
- Check pH and EC
- Inspect roots
- Review feed composition and recent changes
- Compare with unaffected plants under the same environment
Red flags
- Rapid necrosis
- Severe root decline
- Symptoms confined to one branch
- Concurrent stem or vascular abnormalities
Visual study guide
- Interveinal vocabulary plate
- Old-versus-new onset comparison
- Symmetry comparison
- Root-zone context checklist