Tree Growth | Blooming Stage | Epsom Salt Drench | Epsom Salt | Biostimulant Drench | Mild Sugar-Based
Combining Epsom salt with a biostimulant drench like salicylic acid is an excellent pre- and post-inoculation strategy for Aquilaria malaccensis. This combo enhances systemic acquired resistance (SAR), improves stress tolerance, and supports resin biosynthesis after inoculant application.
Epsom Salt + Salicylic Acid Formula (Pre- or Post-Inoculation)
| Component | Amount per Gallon (3.8 L) | Purpose |
|---|---|---|
| Epsom Salt (MgSO₄·7H₂O) | 1 tablespoon (15 g) | Magnesium source, enhances chlorophyll |
| Salicylic Acid (SA) | 50–100 mg (dissolved with ethanol drop) | Induces SAR and defense pathways |
| Molasses (optional) | 1 teaspoon | Carbon source for beneficial microbes |
| Water (non-chlorinated) | 1 gallon (3.8 liters) | Carrier |
Preparation Instructions:
- In a small cup, dissolve salicylic acid (50–100 mg) in a few drops of ethyl alcohol or warm water to aid solubility.
- In 1 gallon of water, mix the dissolved SA, Epsom salt, and molasses.
- Stir thoroughly until fully dissolved.
- Apply the solution directly to the soil around the root zone of Aquilaria trees.
Application Timing:
| Use Case | Timing | Frequency |
|---|---|---|
| Pre-inoculation boost | 7 days before inoculation | 1x |
| Post-inoculation care | 7–10 days after inoculation | Every 3–4 weeks |
| Vegetative growth aid | During active growing months | Every 4–6 weeks |
| Drought/stress periods | During recovery | As needed |
Benefits for Aquilaria malaccensis:
- Salicylic acid activates resin biosynthesis genes and defense enzyme pathways (e.g., PAL, peroxidase).
- Magnesium from Epsom salt supports energy metabolism and root health.
- Enhances inoculation responsiveness by priming plant immunity.
- Promotes balanced nutrition, especially in degraded or magnesium-deficient soils.
Precautions:
- Salicylic acid should be used in low concentrations to avoid phytotoxicity.
- Avoid combining with strong synthetic fungicides that may neutralize beneficial microbial activity if molasses or microbes are also used.
- Always test on a small group of trees first when using a new formula.