MustGrow's Canola Field Trials Demonstrate Clubroot Disease Suppression; Improved Canola Yield with Healthier Root Systems

Rhea-AI Summary

MustGrow (TSXV: MGRO / OTCQB: MGROF) announced results from a 2-year, ~100-acre Prairie field program showing its mustard-derived biocontrol TerraMG reduced Clubroot inoculum and improved canola root health and yields. Trials showed up to 95% spore reductions in 2024 and yield gains up to 7 bu/acre (≈19%). The company is pursuing registration with Health Canada's Pest Management Regulatory Agency and reports variable 2025 gains (1–2 bu/acre) in drier, lower-disease conditions.

Positive

• Up to 95% reduction in Clubroot resting spores in 2024 trials
• Yield improvement up to 7 bu/acre (≈19% vs 36 bu/acre baseline) in 2024
• Field program covered approximately 100 acres across 2024–2025
• Active regulatory pathway: pursuing registration with Health Canada PMRA

Negative

• 2025 showed only 1–2 bu/acre gains in drier, lower-disease conditions
• No product currently registered for Clubroot—commercial sales depend on PMRA approval
• Efficacy appears variable by season, linked to disease pressure and weather

• MustGrow's mustard-derived organic biocontrol technology TerraMG^TM focuses on soil-borne disease and pest suppression, which has been shown to improve soil conditions, crop yields, and healthier root systems;
• Clubroot is a soil-borne parasitic disease with devastating effects on canola production across the Canadian Prairies with no effective products currently registered for Clubroot suppression;
• Field trial findings support TerraMG^TM's role as a sustainable product capable of suppressing Clubroot and promoting higher canola yields and root systems under various disease pressures;
• MustGrow (via NexusBioAg) trialed approx. 100 acres over 2-year field program.

Saskatoon, Saskatchewan--(Newsfile Corp. - February 3, 2026) -  MustGrow Biologics Corp. (TSXV: MGRO) (OTCQB: MGROF) (FSE: 0C0) (the "Company" or "MustGrow"), is pleased to announce completion and results of its 2-year field trial program in the Canadian Prairies on approximately 100 acres of canola production. Field trial findings have demonstrated MustGrow's TerraMG^TM is a sustainable technology capable of suppressing clubroot parasitic disease (P. brassicae) ("Clubroot") and promoting higher canola yields and root systems under various disease pressures.

Clubroot is a soil-borne parasitic disease that has had devastating effects on canola production across the Canadian Prairies with no effective products currently available for Clubroot suppression. Canola is Canada's most valuable field crop, with 2025 production reaching approximately $14 billion (21.8 million tonnes at approximately $650/tonne)⁽¹⁾ and generating billions in annual export revenue. Without adequate treatment and management solutions, Clubroot continues to create major problems for Canadian canola farmers who need a solution.

TerraMG^TM: MustGrow's Answer to Clubroot

MustGrow is actively working towards registering its organic biocontrol product TerraMG^TM through Health Canada's Pest Management Regulatory Agency. TerraMG^TM combats Clubroot through its mechanism, releasing naturally occurring isothiocyanates from mustard seed meal. Isothiocyanates are known to possess fungicidal and biocidal activity, suppressing a range of soil-borne pathogens, including Clubroot.

In MustGrow's 2024 and 2025 field trials, conducted through its wholly-owned Canadian marketing and distribution business NexusBioAg, TerraMG^TM-treated plots showed a significant reduction in resting spore concentrations of Clubroot relative to untreated controls. Visual assessments of canola root galls indicated reduced severity and incidence in treated plots. These findings support TerraMG^TM's role as a sustainable biocontrol capable of suppressing Clubroot inoculum and promoting higher canola yields and healthier root systems under various disease pressure.

In 2024, Clubroot spores were more prevalent due to a wetter growing season, and TerraMG^TM performed exceptionally well with up to 95% reductions in Clubroot spores. Disease pressure was consistent throughout the season due to the wetter conditions. Yield benefits to the grower showed up to a 7 bushel/acre increase (19% increase over Canada's 36 bushel/acre average production in 2024)⁽²⁾, translating to a $91/acre increase in value to the farmer (at approximately $13/bushel average commodity price)⁽³⁾.

In 2025, according to internal data, canola farmers experienced a relatively dry season and correspondingly less Clubroot disease prevalence than the much wetter 2024 season. Yield increase utilizing TerraMG^TM demonstrated a 1-2 bushel/acre increase over the control, which was less impactful than 2024, with less Clubroot infestation in the fields to address.

Detrimental Disease with Limited Options for Farmers

The 15-20 year longevity of Clubroot's highly resilient resting spores is a key element of Clubroot's persistence and detrimental impact on canola. The parasitic disease induces gall formation on roots, disrupting water and nutrient uptake. Early infection with moderate to high spore loads can lead to 100% loss of canola crop. Infection at the early seedling stage can later result in wilting, stunting, yellowing and death of canola plants. In later crop stages, inflection may not necessarily show wilting, stunting or yellowing, but infected plants may ripen prematurely, resulting in shriveled seeds and negatively impacting yield, oil content, and quality.⁽⁴⁾

No effective products are currently registered for Clubroot suppression in canola. Current farming practices include extensive sanitation and equipment cleaning, long crop rotations (3-4 years between canola crops), and genetically-modified resistant canola varieties. While genetic resistance in commercial canola hybrids initially provided strong control, new mutated Clubroot pathotypes are now capable of overcoming resistance.⁽⁴⁾

These methods, while partially effective, are economically and logistically challenging. A biological, soil-active technology, like MustGrow's TerraMG^TM, capable of reducing resting spore loads could represent a significant breakthrough in sustainable Clubroot management for Canadian farmers.

References:

1) Production of principal field crops, November 2025
2) Production of principal field crops, November 2024
3) Feed Grain - Other Crops - Canola Prices 2024.xlsx
4) Clubroot Disease | Canola Encyclopedia

About MustGrow

MustGrow Biologics Corp. is a fully-integrated provider of innovative biological and regenerative agriculture solutions designed to support sustainable farming. The Company's proprietary and third-party product lines offer eco-friendly alternatives to restricted or banned synthetic chemicals and fertilizers. In North America, MustGrow offers a portfolio of third-party crop nutrition solutions, including micronutrients, nitrogen stabilizers, biostimulants, adjuvants and foliar products. These products are synergistically distributed alongside MustGrow's wholly-owned proprietary products and technologies that are derived from mustard and developed into organic biocontrol and biofertility products to help replace banned or restricted synthetic chemicals and fertilizers. Outside of North America, MustGrow is focused on collaborating with agriculture companies, such as Bayer AG in Europe, the Middle East and Africa, to commercialize MustGrow's wholly-owned proprietary products and technologies. The Company is dedicated to driving shareholder value through the commercialization and expansion of its intellectual property portfolio of approximately 110 patents that are currently issued and pending, and the sales and distribution of its proprietary and third-party product lines through NexusBioAg. MustGrow is a publicly traded company (TSXV: MGRO) and has approximately 62.9 million common shares issued and outstanding and 77.0 million shares fully diluted. For further details, please visit www.mustgrow.ca.

Contact Information

Corey Giasson Director & CEO
Phone: +1-306-668-2652
info@mustgrow.ca

MustGrow Forward-Looking Statements

Certain statements included in this news release constitute "forward-looking statements" which involve known and unknown risks, uncertainties and other factors that may affect the results, performance or achievements of MustGrow.

Generally, forward-looking information can be identified by the use of forward-looking terminology such as "plans", "expects", "is expected", "budget", "estimates", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might", "occur" or "be achieved". Forward-looking statements in this news release, including statements about: the impact and significance of customer performance data and field testing, the increase in value of yields and the costs of such increase in value, if any, and are subject to a number of risks and uncertainties that may cause the actual results of MustGrow to differ materially from those discussed in such forward-looking statements, and even if such actual results are realized or substantially realized, there can be no assurance that they will have the expected consequences to, or effects on, MustGrow. Important factors that could cause MustGrow's actual results and financial condition to differ materially from those indicated in the forward-looking statements include: those risks described in more detail in MustGrow's Annual Information Form for the year ended December 31, 2024 and other continuous disclosure documents filed by MustGrow with the applicable securities regulatory authorities which are available on SEDAR+ at www.sedarplus.ca. Readers are referred to such documents for more detailed information about MustGrow, which is subject to the qualifications, assumptions and notes set forth therein.

Neither the TSXV, nor their Regulation Services Provider (as that term is defined in the policies of the TSXV), nor the OTC Markets has approved the contents of this release or accepts responsibility for the adequacy or accuracy of this release.

© 2026 MustGrow Biologics Corp. All rights reserved.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/282525

FAQ

What did MustGrow (MGROF) report about TerraMG field trials on February 3, 2026?

TerraMG trials showed significant Clubroot suppression and yield gains in 2024 and smaller gains in 2025. According to the company, trials on ~100 acres produced up to 95% spore reductions and yield increases up to 7 bu/acre in wetter 2024 conditions.

How much yield improvement did TerraMG deliver to canola growers in 2024 for MGROF?

TerraMG delivered up to a 7 bu/acre increase (about 19%). According to the company, that improvement versus a 36 bu/acre baseline translated to roughly $91/acre additional value at ~$13/bu commodity price.

Does MustGrow (MGROF) have regulatory approval to sell TerraMG for Clubroot suppression?

Not yet—TerraMG is being pursued for registration with Health Canada's PMRA. According to the company, commercial availability depends on successful completion of the PMRA approval process.

Why were TerraMG yield gains smaller in 2025 for MGROF?

Yield gains were smaller because 2025 had a drier season and lower Clubroot pressure. According to the company, reduced disease prevalence in 2025 led to more modest 1–2 bu/acre increases versus treated controls.

How does TerraMG work to suppress Clubroot according to MustGrow (MGROF)?

TerraMG releases naturally occurring isothiocyanates from mustard seed meal that suppress soilborne pathogens. According to the company, these compounds have fungicidal and biocidal activity that reduced Clubroot resting spore concentrations in trials.