What each document proves—and what it does not
The patented sludge process is real. The scientific founders are qualified. The public performance record is nevertheless narrow: one peer-reviewed paper on the historic product, unpublished regulator reports and no public result from the current-product farm program.
Dates, ownership, claim scope and fee status are confirmed in Bulgarian Patent Office records and full publications.
Patent BG 67650
The claim centers on sewage-treatment sludge, high-pH alkaline processing, dilution, homogenization, controlled heat/time and organic-acid neutralization.
Utility model BG 4083
It claims the material itself and composition ranges around 0.82–1% total nitrogen, 0.02–0.03% P₂O₅, 0.2–0.3% K₂O, 53–54% organic matter and 35–37% humic acids.
What the IP establishes: ownership, inventors, priority, grant/registration, legal status and claim wording. It does not establish commercial manufacture, current-product identity, safety approval, customer demand or broad agronomic performance.
A 2025 Bulgarian Journal of Agricultural Science paper reports an oil-bearing rose experiment conducted in 2021–2022 with Atlas Universal.
Reported result—not a portfolio-wide conclusion
That is a publishable positive signal for the tested historical formulation in the reported setting. It is not evidence that Terra, Nitro or Amino will deliver those effects.
| Dimension | What the paper provides | Limitation |
|---|---|---|
| Design | Two seasons, field comparison, control plus treatment variants. | One location; five plants per variant are described. |
| Product | Atlas Universal with a reported analytical composition. | Historic product, not the current registered Terra family. |
| Outcomes | Flower yield, oil yield and economic calculations. | No independent multi-site replication found. |
| Authorship | Includes subject-matter scientists. | Coauthor Dermendzhieva was an inventor and 10% shareholder. |
| Disclosure | The paper declares no competing interests and no funding. | The ownership/inventor relationship is not disclosed, making the declaration materially incomplete. |
| Formulation consistency | Paper reports N 6.159% w/v, P₂O₅ 1.712%, K₂O 0.1245% and humic acids 35.1%. | Nitrogen and phosphorus do not fit the utility-model ranges; no public source resolves reformulation, basis or transcription. |
The public chain stops before independently assessable results.
Terra
Composition and use are documented. The 2025 amendment says field reports were submitted in support of lower doses.
Regulatory record Reports unpublished
Terra
Official selection confirms third-party program acceptance and intended on-farm validation. No Atlas-specific protocol, data table, presentation or final outcome was found.
Selected No public result
Nitro
No peer-reviewed or independent public current-formulation trial was found.
Not public
Amino
No peer-reviewed or independent public current-formulation trial was found.
Not public
“Not established publicly” leaves open the possibility of private data. It prevents those claims from being presented here as fact.
| Proposition | Best public support | Evidence rating |
|---|---|---|
| Patent and utility model exist and are active. | Direct Patent Office records and full publications. | High |
| Current products may be marketed in Bulgaria under the listed orders. | Signed product orders and current register references. | High |
| Historic Atlas Universal improved rose outcomes in one setting. | One peer-reviewed, narrow, company-connected study. | Moderate |
| Current Terra works across crops and farms. | Program selection and unpublished report references. | Low public proof |
| Current products cut nitrogen fertilizer use by 50%. | Company/program promotional language. | Unproven |
| They generally improve pesticide efficacy. | Company copy; no independent current-product trial found. | Unproven |
| They are universally compatible or “100% safe.” | Promotional language; Terra order includes a chlorine-mixing warning. | Overbroad |
| Using them automatically qualifies a farm for an eco-scheme. | Broad marketing interpretation, not a product-specific entitlement decision. | Unproven |
More awards or general sustainability articles would not close the core gaps. These documents would.
Predefined protocols, credible comparators, multiple sites and seasons, complete data, statistical analysis and crop-specific conclusions.
Work conducted or audited by researchers without equity, inventor or supplier interests, with those interests explicitly disclosed.
Certificates of analysis, contaminant and microbiological tests, stability/shelf-life files and quality-control procedures.
A manufacturing flow and claim chart connecting—or deliberately separating—the current formulations and the sludge IP.
The Atlas-specific Test Farms report and the field reports referenced in the 2025 Terra amendment.