Biostimulant Drench with SA

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.

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Customized Soil Drench for Aquilaria malaccensis

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

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Preparation Instructions:

1. In a small cup, dissolve salicylic acid (50–100 mg) in a few drops of ethyl alcohol or warm water to aid solubility.
2. In 1 gallon of water, mix the dissolved SA, Epsom salt, and molasses.
3. Stir thoroughly until fully dissolved.
4. Apply the solution directly to the soil around the root zone of Aquilaria trees.

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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

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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.

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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.

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