Pseudomonas strain DSMZ 13134
Description
Mode of action
Pseudomonas strain DSMZ 13134 is a biological agent belonging to the group of rhizosphere-colonizing antagonist bacteria. Its mode of action is based on the active colonization of the root system and plant surfaces by beneficial microflora.
Bacteria of this strain synthesize specific antibiotic compounds, such as phenazines, which suppress the growth of pathogenic fungi. These substances destroy the cell membranes of pathogens, blocking their metabolic pathways.
In addition to direct antagonism, the product activates Systemic Acquired Resistance (SAR) in the plant itself. By stimulating the immune system, the bacteria make the crop less susceptible to stress factors and future infections.
The product actively competes with phytopathogens for attachment sites in the rhizosphere and limited nutritional resources. Through rapid multiplication, the bacteria create a bio-barrier that physically prevents the germination of pathogen spores.
An important characteristic is the production of siderophores, which bind iron. By limiting the availability of iron for pathogenic microorganisms, the strain effectively inhibits their biological functions in the soil environment.
What it targets
This strain is used as a biofungicide for controlling a wide range of soil-borne and seed-borne infections, as well as several diseases of the vegetative parts of plants.
- Root rots of various etiologies
- Fusarium wilt
- Powdery mildew
- Late blight
- Rhizoctonia in cereals
The main crops for application are cereals, potatoes, open and greenhouse vegetables, as well as ornamental flowering plants.
The product is most effective when used for preventive treatment of seeds and soil substrates before planting seedlings, creating a beneficial microbiome early in the development.
The biological agent shows high efficacy under high humidity conditions, making it an essential component of ecological and sustainable farming systems.
Rates and timing
Application rates vary depending on the target crop and method of treatment, typically ranging from 1 to 5 liters of product per hectare depending on the formulation.
For pre-sowing seed treatment, the rate is calculated to ensure uniform coverage of the seed surface, providing essential protection for seedlings during the critical germination phase.
When spraying during the vegetative period, it is crucial to maintain intervals of 10 to 14 days to keep a sufficient concentration of beneficial bacteria on the leaf surface.
The working solution should be prepared immediately before application, avoiding exposure to direct sunlight, as UV radiation significantly reduces bacterial viability.
The optimal temperature range for application is between +12 and +25 degrees Celsius, which ensures maximum metabolic speed and reproduction of the strain.
Restrictions
Mixing the product with chemical fungicides or bactericides that could suppress the activity of strain DSMZ 13134 in the tank mix is strictly prohibited.
Applications during periods of extremely high temperatures or severe drought are not recommended, as these factors decrease the survival rate of the biological agent.
Avoid using chlorinated water to prepare working solutions, as chlorine has a lethal effect on the live microbial cultures within the product.
Standard safety measures should be followed during application, including the use of gloves and protective clothing, despite the biological nature of the product.
The product should be stored in a cool, dark place out of reach of children and pets, strictly adhering to the storage conditions specified by the manufacturer.
Status in the European Union
Approved in the EU
- Category (EU)
- FU - Fungicide
- Approved from
- 01.02.2014
- Approval until
- 30.06.2027
- ADI
- Not appl.
- ARfD
- Not appl.
- AOEL
- Not appl.
EU status is for reference only and does not replace national registration in your country.