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Liquid Fertilizer — Field Trial Results

Field-Proven Organic Liquid Fertilizer

This page presents two years of field trial results for liquid fertilizer produced through the DBES anaerobic digestion process. The results confirm measurable yield improvement and quality enhancement across agriculture and aquaculture.

Validation Summary

Summary of Core Trial Data

8

Crop & Aquaculture Species Validated

2

Year Field Trial Period

30%

Peak Yield Increase (Onion)

50%+

Mortality Rate Reduction

Click a document to view details

Agricultural Field Trials

Crop-by-Crop Trial Results

These are field trial results across five crop types in Korea. They compare DBES liquid fertilizer with conventional fertilization.

Award

Rice

Gimje, Korea, Gunsan, Korea, Buyeo, Korea, Haenam, Korea · 2016–2017

+10%

Yield Increase

90%

Germination Improvement

  • 10% yield increase over conventional fertilizer plots
  • Germination rate improved to 99.9%+
  • Lodging reduced by approximately 80%
  • Harvest period shortened by 10–15 days
  • Reduced broken rice during milling
  • Protein content reduced to 5% range (premium quality indicator)
  • Won Grand Prize at 2016 Premium Rice Competition

Application: Seed soaking & seedbed: 1:1,000 dilution; Field spraying: 10 L per 3-ton tank, 2 applications during pest control

2016 Premium Rice Competition — Grand Prize

Onion

Hapcheon, Korea, Geochang, Korea · 2016

20–30%

Yield Increase

  • 20–30% yield increase compared to control groups
  • No bolting observed in treated plots
  • Enhanced pest and disease resistance
  • Improved climate stress tolerance (heat and cold)
  • Stronger pungency and heavier bulb weight
  • Extended post-harvest storage life

Application: 1:1,000 dilution, 4 foliar applications

Potato

Seosan, Chungnam, Korea · 2017

+10%

Yield Increase

+1 mo

Extended Storage

  • Over 10% yield increase across trial plots
  • Storage life extended by approximately 1 month (sprouting delay)
  • Higher seed germination rate
  • Improved tuber firmness and skin quality
  • Reduced field spoilage during prolonged rainy seasons
  • Enhanced resistance to frost and heat stress

Application: 1:1,000 dilution, 4 applications

Jeju Citrus (Mandarin)

Seogwipo, Jeju, Korea, Pyoseon, Jeju, Korea · 2016

14.7

Brix (Peak Sugar)

<1%

Acidity Level

  • Sugar content range of 11–14.7 Brix (avg. 10.72 Brix after 6 applications)
  • Acidity maintained below 1%
  • Improved fruit coloring — even, deep orange
  • Enhanced market premium potential
  • Extended post-harvest storage life

Application: Soil improvement: 1:500 dilution, 1 application; Foliar: 1:1,000 dilution, 4 applications

Ginseng

Yeoju, Gyeonggi, Korea, Buyeo, Chungnam, Korea · 2016

+10%

Yield Increase

~0%

Root Rot Rate

  • Over 10% yield increase in trial plots
  • Root rot rate reduced from 35–40% to near zero
  • Significantly improved root quality and weight
  • Abundant fine rootlet development
  • Enhanced resistance to extreme weather (heat waves, cold snaps)
  • Extended post-harvest storage life

Application: 1:1,000 dilution, applied every 15 days during growth period

Aquaculture Field Trials

Species-by-Species Trial Results

Field trial results for liquid fertilizer applied in aquaculture environments. Across three species, the trials confirmed improved hatch rates, lower mortality, and gains in growth and meat quality.

Shrimp

Flatfish (Olive Flounder)

Eel

SpeciesHatch RateMortality (Before → After)Weight GainFeed EfficiencyMeat Grade
Shrimp+25%40% → 20%+10%+10%+20%
Flatfish (Olive Flounder)+27%40% → 20%+12%+10%+30%
Eel+25%30% → 15%+15%+10%+20%
Bacterial count reduced by 50%
pH maintained at 6.7–7.4
Overall water quality improvement
Plankton growth and reproduction promoted
Surface gloss and coloring improved
Safety: all metrics below regulatory limits

Feeding Method

  • Processed (pellet) feed: 1 L liquid fertilizer per 1 ton of feed
  • Raw fish feed: 10 kg powder per 1 ton of raw fish

Fish delivered to sashimi restaurants maintain firm flesh significantly longer in holding tanks, preserving texture and flavor quality.

Field trials conducted with agricultural cooperatives since 2007 using it as a feed additive have proven it harmless to humans, animals, and aquatic species.

Tested across 40 olive flounder farms in Jeju and Busan Gijang — demonstrated effective prevention, progression halt, and spread control of wasting disease, a major challenge in flounder aquaculture.

Next Step

Start a Site-Specific Project Review

If the trial results align with your needs, take the next step toward site-specific application planning. Continue to solution structure, review the MBR filtration system, or request a project review.

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