55-gallon liquid PGPR concentrate — built for production-scale inoculation programs.
Front Row Ag Triologic is a liquid microbial root inoculant containing high concentrations of plant growth–promoting rhizobacteria (PGPR) that fix nitrogen, solubilize phosphates, and facilitate mycorrhizal colonization throughout veg and bloom. The 55-gallon format is sized for commercial operations running continuous weekly drench programs across multi-room facilities.
Triologic is a liquid biological inoculant formulated around three beneficial rhizobacteria strains that are classified as plant growth–promoting rhizobacteria (PGPR). These strains are nitrogen-fixing and phosphate-solubilizing, meaning they work within the root-zone substrate to convert atmospheric nitrogen and bound phosphorus into plant-available forms — reducing the biochemical overhead your base nutrients alone have to carry.
Unlike dry granular biologicals that can be inconsistent in concentration or shelf stability, Triologic is delivered as a highly concentrated injectable liquid concentrate, making dose calculation and integration into existing irrigation and fertigation programs straightforward. It is part of the broader Front Row Ag additive lineup, which was developed by cultivation manager and chemist Matt Curran to keep programs simple, measurable, and cost-effective at commercial scale.
Triologic is positioned for licensed cannabis and hemp cultivation operations that run structured biological programs alongside their mineral fertility. It is most relevant to facilities already using mycorrhizal inoculants — Triologic's PGPR strains supply nutrition to the mycorrhizae colonizing the root system, amplifying fungal establishment and the protection and uptake benefits that follow.
The 55-gallon drum is the correct format for commercial facilities running continuous multi-room programs. At a weekly drench rate of 1–2 mL per gallon of reservoir or feed water, a single 55-gallon drum represents significant run capacity for large operations, making per-application cost materially lower than purchasing smaller retail sizes repeatedly. It is applied as a hand-water drench to the root zone — not injected continuously through a dosing system — which keeps the biology localized and effective rather than diluted through an entire recirculating loop.
The PGPR colonies in Triologic establish in the substrate around the root zone and perform two primary functions. First, nitrogen fixation: the bacteria convert dinitrogen from air pockets in the substrate into ammonia-nitrogen that plant roots can absorb, supplementing the nitrate-nitrogen supplied by the base fertility program. Second, phosphate solubilization: they release organic acids and enzymes that break down insoluble phosphate compounds in the substrate, cycling bound phosphorus into orthophosphate forms the root system can take up directly.
Beyond macronutrient cycling, these beneficial bacteria support the plant's mycorrhizal relationship. The rhizobacteria produce compounds that promote mycorrhizal spore germination and fungal growth ahead of root colonization, and they sustain the mycorrhizae once established — which in turn expand the effective root surface area and provide pathogen suppression at the root interface. Applying Triologic early in plant development — from early veg through the full production cycle — gives the colonies time to establish before peak nutrient demand in flower.
Triologic's rhizobacteria have also demonstrated the ability to reduce the effects of abiotic stresses on the crop, helping plants maintain metabolic momentum through environmental fluctuations in temperature, moisture, or fertigation EC that would otherwise suppress root activity and slow uptake.
Front Row Ag's system is built around a 3-part dry-soluble base (Part A, Part B, Bloom) with a small set of targeted additives: Front Row Si, PhosZyme, Triologic, and BioFlo. Triologic occupies the biological root-health role in that stack. It does not replace base fertility, does not contribute measurable EC to the feed solution, and does not interfere with stock-concentrate mixing or dosing equipment when used as directed as a separate weekly hand-water drench.
For facilities running the Front Row Ag 3-2-2 or 4-3-3 stock-concentrate programs with Dosatron or other proportional injection, Triologic is applied outside the injection system — drenched directly to the root zone once per week at 1–2 mL per gallon of working-strength water. This keeps the living biology off the stainless injection heads and reservoir walls where it would be diluted or killed, and deposits it where it can colonize: in the substrate around active roots. The 55-gallon commercial drum format aligns with facilities already buying nutrients in 25-lb bags and 55-gallon drum quantities — it fits the same procurement and storage workflow.
| SKU | FRTRIO550 |
| Brand | Front Row Ag |
| Container Size | 55 Gallons (208 L) |
| Formulation Type | Liquid concentrate |
| Active Biology | Three PGPR strains — nitrogen-fixing and phosphate-solubilizing rhizobacteria |
| Application Rate | 1–2 mL per gallon (0.26–0.53 mL/L) |
| Application Frequency | Once per week |
| Delivery Method | Hand-water root-zone drench (not continuous injection) |
| Compatible Phases | Veg through bloom |
| Program Role | Biological root inoculant — used alongside Front Row Ag mineral base program |
At a weekly drench rate of 1–2 mL per gallon, a production facility watering hundreds or thousands of gallons per week will move through smaller containers quickly. The 55-gallon format reduces per-application cost, cuts down on reorder frequency, and fits the same drum-based procurement workflow that commercial operations already use for their nutrient stock-concentrate barrels.
Front Row Ag specifies Triologic as a hand-water root-zone drench, applied separately from the mineral fertigation program. Running live bacteria through proportional injectors or recirculating reservoirs dilutes the biology and exposes it to conditions that reduce viability. The drench method keeps the PGPR concentrated at the root zone where it can colonize the substrate.
Yes — the PGPR strains in Triologic provide standalone nitrogen-fixation and phosphate-solubilization benefits regardless of whether mycorrhizal products are part of the program. That said, Triologic's rhizobacteria also support mycorrhizal establishment and health, so facilities running a myco program get compounding benefit from pairing both.
Yes. Triologic is designed as a complementary additive to the Front Row Ag A/B/Bloom base system. It does not contribute EC to the feed solution, so it does not affect stock validation readings or injection ratios. Apply it as a separate weekly drench alongside — not mixed into — the mineral feed stock.
Front Row Ag recommends applying Triologic starting early in plant development. Establishing PGPR colonies in the substrate before peak vegetative growth gives the biology time to colonize the root zone and build population density ahead of the higher nutrient demand in mid-to-late flower. Inoculation during cloning or early transplant is appropriate.
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