Agriculture is a dynamic realm that constantly seeks innovative ways to improve crop yield and quality. In recent years, microorganisms have emerged as a promising solution for biocontrol in agriculture. Among these, Pseudomonas fluorescens has garnered significant attention for its exceptional abilities in controlling plant diseases and promoting growth. In this blog post, we’ll explore how Pseudomonas fluorescens controls plant diseases and boosts growth.

Principle: 

Pseudomonas fluorescens is an effective biocontrol agent that utilizes a range of strategies to combat soil-borne plant pathogens.

These include:

• Competition for resources
• Production of antibiotics
• The ability to induce systemic resistance.

By utilizing these characteristics, it presents a promising eco-friendly alternative to chemical methods, fostering sustainable agriculture practices.

Role in Plant Growth Promotion:

Plants can greatly benefit from Pseudomonas traits, including synthesizing phytohormones, nitrogen fixation, siderophore production, and phosphate solubilization. These mechanisms help promote plant growth by supplying crops with vital compounds and improving the uptake of nutrients from the environment.

Research has demonstrated the considerable benefits of Pseudomonas fluorescens in enhancing plant growth and biomass yield. This bacterium acts as a systemic biocontrol agent by inhabiting soil, water, and plant surfaces, effectively protecting plants from various pathogens like phytophthora, pythium, rhizoctonia, and more.

Applications of P.fluorescenes

Pseudomonas fluorescens finds numerous agricultural applications, benefiting crops like rice, black pepper, betel vine, vegetables, anthurium, vanilla, and ginger. It is available in both powder and liquid formulations, allowing for versatile application methods.

• Guard crops from soil and seed-borne plant pathogens.
• Demonstrates specificity in targeting pathogens while being precise in its action.
• Induces resistance in crop plants, contributing to a more robust defence mechanism.
• Effectively manages pathogenic nematodes present in the soil.
• Promotes plant growth through Plant Growth Regulator (PGR) activity.

Methods of Application for Pseudomonas fluorescenes

Seed Treatment:

• Apply 10 grams of the formulation mixed with 40 ml of water uniformly on 1 kg of seeds.
• Shade dries the seeds for 20 to 30 minutes before sowing.

Nursery Bed Treatment: 

• Drench nursery beds (one square meter) with 5-8 grams of Pseudomonas fluorescens formulation per Liter of water before sowing seeds.
• This is particularly recommended for transplanted crops like paddy, capsicum, eggplant, tomatoes, cabbage, and cauliflower.

Seedling Treatment:

• Dissolve 100 grams of formulation in 10 Liters of water and dip the roots of seedlings for 30-45 minutes before transplanting.

Soil Treatment: 

• Mix 1 kg of Pseudomonas fluorescens formulation in 100 kg of FYM/compost/well-decomposed organic manure and broadcast in the field (one acre/400 sq. meters).

Foliar Application: 

• Spray 4.0 grams/Liter to protect blast and blight diseases of paddy crop after 40-45 days of transplanting.

When it comes to ensuring healthy crop growth and protection against diseases, the use of Pseudomonas fluorescens can be highly beneficial. At Peptech Biosciences Ltd., we provide the highest CFU count of microbial-based Bio-Fungicides, ensuring their effectiveness. This commitment to providing cutting-edge products underscores our dedication to sustainable agriculture practices and the continual advancement of biocontrol technologies.