What Is Phytotoxicity?
Phytotoxicity means “plant poisoning.” It happens when a substance—like a chemical, salt, or even a natural extract—harms the plant instead of helping it.
What Causes It?
Some common causes of phytotoxicity include:
| Cause | Example |
|---|---|
| Overuse of chemicals | Too much fertilizer or pesticide |
| High salt concentrations | Excess sodium chloride (NaCl) |
| Hormones or stimulants | Overdosing with salicylic acid |
| Inoculants or microbes | Pathogenic fungi used incorrectly |
| Environmental triggers | Applying treatments under strong sun |
Signs of Phytotoxicity in Trees:
- Yellowing leaves (chlorosis)
- Leaf burn or brown edges
- Leaf drop or wilting
- Stunted growth or death of shoots
- Internal tissue rot (especially in trunks after injection)
Example in Agarwood Inoculation:
Let’s say you inject too much NaCl or strong fungal spores—instead of helping, it can damage the tree’s tissues. This stress might:
- Stop growth,
- Kill living cells, or
- Even prevent resin formation.
Farmer Tips to Avoid Phytotoxicity:
- Follow correct dosage – Don’t “overfeed” the tree!
- Dilute strong substances – Always test on one tree first.
- Monitor after treatment – Watch for leaf burn or early signs.
- Use proper timing – Avoid mid-day heat or rainy season.
- Use tested protocols – Trust what’s been field-proven.