SoilBoost EA for durian and tropical fruit trees

Short answer: SoilBoost EA is a humic acid soil conditioner (not a fertiliser, and not a substitute for one) manufactured exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading. Derived from Leonardite ore, it is used to support soil structure and root-zone conditions, which may help nutrients already in the soil, or applied as fertiliser, stay available to the plant. Our company guidance for durian and tropical fruit trees, not a trial-proven rate, is about 100 to 200 g per mature tree as a soil drench around the drip line, 2 to 3 times per year, ideally during the early wet season. Check your own soil and leaf analysis before planning a programme.

Request a quotation for SoilBoost EA. We reply within one business day (Philippine time).

SoilBoost EA at a glance

  • Analysis: approximately 0.45 percent sulphur, pH 3.84
  • Source material: Leonardite ore
  • Category: soil conditioner, not a fertiliser, not a substitute for a fertiliser programme, and not a fungicide or pesticide
  • Manufactured: exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading
  • Export: export documentation matched to the destination country’s requirements, confirmed at quotation
Please note: SoilBoost EA is a soil conditioner. It is not a fertiliser and is not a substitute for one, and it is not a fungicide, pesticide or other crop-protection product; it does not control, treat or prevent plant disease. SoilBoost EA does not hold organic certification; within the Kudzu Seeds range, only Hyacinth Plus is certified (BAFS and Control Union). Treat the rates below as Kudzu Seeds Trading company guidance, not trial-proven rates, and verify them against your own soil and leaf analysis rather than assuming a fixed fertiliser credit. No yield or germination outcome is guaranteed.

What is SoilBoost EA?

SoilBoost EA is a concentrated humic acid soil conditioner (approximately 0.45 percent sulphur, pH 3.84), manufactured exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading and derived from Leonardite ore. Humic and fulvic substances can chelate micronutrients such as iron, zinc and copper and may help hold nutrients in the root zone; field results with humic products vary (Olk et al. 2018). It supplies no meaningful quantity of N, P or K itself, so it is used alongside a fertiliser programme rather than in place of one. We supply SoilBoost EA to buyers across the Philippines and, on request, worldwide from Davao City. It is a Leonardite-derived mineral product rather than seed or plant material, so a phytosanitary certificate is not necessarily the document a destination country requires for it; the applicable export documentation is confirmed at quotation. Where a destination does require plant health documentation, the certificate is issued by the Philippine Bureau of Plant Industry, the national plant protection organisation, under the IPPC framework. Import permits and admissibility remain the buyer’s responsibility.

Hand in a wooden bowl of SoilBoost EA granules
SoilBoost EA granules.

SoilBoost EA application rates

Rates depend on how SoilBoost EA is applied. The figures below are Kudzu Seeds Trading company guidance by method, not trial-proven rates, and are starting points, not prescriptions. The rate for your site is set on the quotation. Use the calculator further down to work out the exact quantity for your crop, area, and method.

Method Rate Best for
Per mature tree (soil drench at drip line) 100 to 200 g per tree, 2 to 3 times per year Durian, mango, coconut, oil palm, and other established trees
Per planting hole (at planting) 20 to 50 g per hole New tree and seedling establishment
Fertigation / soil drench 10 to 15 kg/ha Banana, papaya, vegetables, and field crops via irrigation
Broadcast / pre-planting (dry) 50 to 100 kg/ha Whole-block incorporation before planting
Foliar spray 500 to 1,000 ppm solution Quick top-up between soil applications

Why durian growers use SoilBoost EA

Durian has a relatively shallow feeder-root system, so root-zone conditions and steady nutrient availability matter. SoilBoost EA is used as part of a soil management programme alongside conventional fertilisers. Research on humic substances in general reports effects on soil structure and nutrient retention, but responses vary widely between studies, and SoilBoost EA has not been trialled on durian; no yield or fruit-set improvement is implied or guaranteed.

It can be used in conventional and low-input programmes, although it is not itself an organically certified input. For the one controlled trial of SoilBoost EA, on banana seedlings, see the SoilBoost EA field trial and research evidence. Any change to your fertiliser rates should be verified against your own soil and leaf analysis rather than assuming a fixed fertiliser credit.

How to apply SoilBoost EA

For tree crops, our company guidance is about 100 to 200 g per mature tree. Dissolve in water (about 1:100 to 1:200) and apply as a soil drench around the drip line of the tree. The drip line is the outer edge of the canopy where rainwater naturally falls. This is where the active feeder roots are concentrated.

For field crops like melon and vegetables, apply at 10 to 15 kg/ha via irrigation (drip or sprinkler) or as a foliar spray during early morning or late afternoon.

Timing: apply during the early wet season when soil moisture is adequate. Avoid applying during heavy rain events that could wash the product away before soil absorption.

Plan your application rate

Work out the exact quantity of SoilBoost EA for your crop, area, and method (broadcast, fertigation, foliar, or per tree) with our free SoilBoost EA Application Rate Calculator, or browse all our plantation tools.

Availability

SoilBoost EA is manufactured exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading. Kudzu Seeds Trading, the Philippines-based sister company of Chemiseed Sdn. Bhd., supplies it to buyers across the Philippines and, on request, worldwide from Davao City. Export documentation is matched to each destination country’s requirements and confirmed at quotation; import permits and admissibility remain the buyer’s responsibility.

Pack sizes and ordering

Pack sizes, minimum order and lead time are confirmed on the quotation.

Frequently asked questions

Can SoilBoost EA replace chemical fertiliser?
No. SoilBoost EA is a soil conditioner, not a fertiliser, and it is not a substitute for one. It is designed to complement your fertiliser programme by improving soil condition and nutrient availability. Keep your existing fertiliser programme and add SoilBoost EA alongside it. Verify any adjustment against your own soil and leaf analysis rather than assuming a fixed fertiliser credit.
Is SoilBoost EA certified organic?
No. SoilBoost EA does not hold organic certification. It is derived from Leonardite, and that is not the same as being certified. Within the Kudzu Seeds range, only Hyacinth Plus holds organic certification (BAFS and Control Union). If you farm to an organic standard, confirm acceptability with your own certifying body before use.
How long does it take to see results?
Soil condition changes are gradual rather than immediate, and the response depends on your soil type, rainfall and existing nutrition programme. Growers generally look for changes in soil structure over a period of months and assess plant response across a full growing season. Consistent application over successive seasons is more informative than a single application.
Can I mix SoilBoost EA with pesticides or herbicides?
SoilBoost EA is not a fungicide, pesticide or herbicide and makes no contribution to pest or disease control. Apply it separately from fungicide, herbicide or concentrated fertiliser tank mixes; ask us for mixing guidance for your programme.
Who manufactures SoilBoost EA?
SoilBoost EA is manufactured exclusively for Chemiseed Sdn. Bhd. and Kudzu Seeds Trading. Kudzu Seeds Trading, the Philippines-based sister company of Chemiseed Sdn. Bhd., supplies it to buyers across the Philippines and, on request, worldwide from Davao City.
Request a quotation

See the SoilBoost EA product page and the SoilBoost EA field trial and research evidence. We reply within one business day (Philippine time).

SoilBoost EA is a soil conditioner. It is not a fungicide, pesticide, plant protection product, or standalone treatment for Fusarium TR4, Phytophthora, or any crop disease. It may support soil structure and root-zone conditions as part of a broader agronomy program, but disease management must follow local agronomist, regulatory, sanitation, drainage, and resistant-variety guidance.