The Role of Bacillus subtilis in Sustainable Farming
In the global push toward greener, more resilient agriculture, Bacillus subtilis[1] has emerged as one of the most valuable microbial allies. As a rhizosphere-colonizing bacterium, it enhances root health, suppresses soil-borne pathogens, and strengthens plants’ ability to cope with environmental stresses. Its versatility makes it a cornerstone in integrated solutions that reduce reliance on synthetic chemicals while improving yield and quality. Against this background, Qingdao Seawin Biotech’s SYNERGY, a Bacillus subtilis[1]–based biostimulant[2], has been tested across multiple crops in Algeria by distributor PROFERT SA throughout 2024–2025. Results consistently highlight its ability to improve plant vigor, root development, disease resistance, and even post-harvest preservation.
Bacillus Subtilis ( SYNERGY Microbial[1] )in Algeria
Tomato Greenhouse Trial – Growth and Root Development
A series of trials conducted in El Oued evaluated SYNERGY Microbial[1] on greenhouse tomatoes during winter conditions. Despite low night temperatures (as low as 4 °C), plants treated with SYNERGY demonstrated:Enhanced rootlet development, ensuring better water and nutrient absorption.
Improved stem height and vegetative growth compared with untreated controls.
Healthier foliage, with new leaves turning from deficiency yellow to vigorous green.
The greenhouse treated with SYNERGY showed good fruit development of the floral bouquet without abortion, unlike the control, where the last flowering bouquet This trial confirmed that SYNERGY not only boosts growth but also helps crops perform under stress conditions.
2. Microbial Bacillus Subtilis trial on Tomato Post-Harvest Preservation
A second study focused on the post-harvest shelf life of tomatoes. Over a month-long evaluation, clear differences were observed:
Harvest on Feb.06, 2025 Feb.25, 2025
Feb., 2025 Mar.10, 2025
NB: Special mention by technicians that, for the control tomato sample, after the damage rate exceeded 75%, it gave off a strong odor with visible symptoms, whereas for the sample treated with Synergy, the damage rate was 60% with no odor.
This highlights SYNERGY’s ability not only to support growth in the field but also to extend the marketability of harvested produce, a major economic advantage for farmers and exporters.
3. Microbial Bacillus Subtilis trial on Watermelon Greenhouse
SYNERGY was also evaluated on watermelon crops (varieties: Bretona, Kaiser, Antilope). During the trial, the temperature was 36.0℃ and the humidity was 40.3%. . After the second application of SYNERGY on watermelon, a significant effect on leaf and root growth was observed after two weeks, especially new rootlets, as well as the number of leaves and the fruit set rate also increased following the results of the second evaluation carried out after the first treatment.
These findings suggest SYNERGY’s strong potential in cucurbit crops, supporting both vegetative vigor and reproductive success under stress from temperature and diseases.
Conclusion – A Proven Tool for Modern Agriculture
Across multiple trials in Algeria, SYNERGY demonstrated its value as more than just a microbial input. By promoting root growth, enhancing plant resilience under stress, reducing flower abortion, and extending post-harvest shelf life, SYNERGY provides farmers with an integrated solution that bridges biocontrol and biostimulant benefits.
Backed by Qingdao Seawin Biotech’s expertise in Microbial formulations and validated under real field conditions, SYNERGY is set to become a key player in sustainable agricultural practices, particularly in regions facing climatic stress and post-harvest challenges.
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