How to use SoilBoost EA for durian, melon, and fruit trees
How to use SoilBoost EA for durian, melon, and fruit trees
SoilBoost EA supports soil structure and nutrient availability for fruit crops. Its humic and fulvic acids from leonardite support root development, cation exchange capacity and nutrient availability across durian, melon, citrus and banana plantings. It is a soil conditioner, not a fertiliser and not a substitute for one, and we do not put a yield percentage on it.
What is SoilBoost EA?
SoilBoost EA is a leonardite-derived humic soil conditioner, manufactured exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading, Chemiseed's Philippines-based sister company. Its humic and fulvic acids add cation exchange capacity (CEC) to the soil and support soil structure, nutrient cycling and root growth.
Application guide by crop type
| Crop | Concentration (planning default) | Method | Frequency |
|---|---|---|---|
| Durian | 750 to 1,000 ppm | Soil drench or fertigation | Every 6 to 8 weeks during growth |
| Melon | 500 to 750 ppm | Foliar spray or soil drench | Every 4 weeks from transplant |
| Banana | 750 ppm | Soil drench | Every 6 weeks post-planting |
| Citrus | 500 to 1,000 ppm | Fertigation or soil drench | Every 8 weeks during season |
| Other fruit trees | 500 to 750 ppm | Foliar or soil application | Every 6 to 8 weeks |
Dosage and application methods
Foliar spray
Dissolve 500 to 750 g of SoilBoost EA in 1,000 litres of water for a 500 to 750 ppm solution. This is a planning default, not a label rate. Spray in the early morning or late afternoon to reduce evaporation.
Soil drench
Fertigation
Inject SoilBoost EA through your drip irrigation system at the drench label rate of 10 to 15 kg/ha for the area covered by the run, diluted to about 500 to 1,000 ppm. Do a jar test with your own fertiliser solution before mixing in the tank.
Key benefits
Nutrient uptake
In a meta-analysis of humic acid products as a class, nitrogen-use efficiency averaged about 27% higher than untreated controls (Ma, Cheng and Zhang 2024, Agronomy 14(12): 2763). That work did not test SoilBoost EA, and the effect diminishes outside roughly pH 6 to 8. Humic acids chelate essential minerals, which may help keep them available to roots.
Soil structure
Humic substances add cation exchange capacity, which supports water retention and nutrient-holding capacity.
Root development
Supports root development as part of a balanced fertiliser programme.
Soil pH
Response is strongest in moderate-pH soils (about pH 6 to 8) and diminishes outside that range. SoilBoost EA is a soil conditioner, not a liming material, and it does not correct soil pH.
When to apply
These intervals are planning defaults. Adjust them to your soil test, crop stage and rainfall.
Growing season: Begin applications 4 to 6 weeks after transplanting. Continue every 4 to 8 weeks through active growth and flowering.
Pre-flowering: Shorten the interval to every 4 weeks to support nutrient uptake during the reproductive phase.
Post-harvest: One application 2 to 3 weeks after harvest supports tree recovery.
Frequently asked questions
Can I mix SoilBoost EA with other fertilisers?
Usually, yes. SoilBoost EA is normally used alongside NPK fertilisers and micronutrients. Humic solutions can form deposits with some products, so do a jar test with your own tank mix first and follow the label of each product.
What pack size should I choose?
The 500 g and 1 kg packs suit trials, nurseries and small plots. A 25 kg bag covers about 0.25 to 0.5 ha at the broadcast label rate (50 to 100 kg/ha), or about 1.7 to 2.5 ha at the drench label rate (10 to 15 kg/ha). For larger areas, request a quotation.
How long before I see results?
It depends on soil, crop and season, and we do not publish a response time. Treat a limited area, leave an untreated comparison strip, and compare the two over a full season.
Ready to work on your root zone?
Trial SoilBoost EA on a limited area with an untreated comparison strip, and judge it on your own ground. Analysis is run per batch, on request: published figures are typical, not guaranteed constants, and a certificate of analysis for the batch supplied is available on request.
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