Powdery Mildew Control

Powdery mildew, a widespread fungal disease primarily caused by Leveillula taurica and Oidium sp., poses a significant challenge in agriculture, particularly under warm and humid conditions.

PRIMA Agro Tech addresses this issue with a targeted approach, utilising a synergistic blend of Bacillus siamensis, Bacillus subtilis, Paenibacillus polymyxa, and Bacillus amyloliquefaciens. These microorganisms work together to inhibit the fungi, enhance plant defences, and promote overall crop health, offering a sustainable and effective solution for powdery mildew control.

About the Plant Disease

Powdery mildew control is essential in agriculture due to the significant impact of this fungal disease, especially in climates combining moisture and warmth. It is caused primarily by fungi such as Leveillula taurica and Oidium sp., affecting many crops.

Pathogen(s)

Leveillula taurica and Oidium sp., the fungi responsible for powdery mildew, belong to a group of obligate parasites that specifically target the aerial parts of plants.

Leveillula taurica is known for its more aggressive nature, capable of infecting a broader range of hosts and causing more severe symptoms. Oidium sp., often characterised by its distinct powdery appearance, infects in high humidity and warm temperatures. Both fungi reproduce rapidly, releasing numerous spores that facilitate widespread infection, making their control a significant challenge in affected areas.

Symptoms & Damage

Powdery mildew is easily identified by the white, powdery fungal spores that cover the leaf surface. This infection hampers photosynthesis and can lead to the drying and falling of leaves. In severe cases, it causes extensive damage to the foliage, significantly diminishing the plant’s health and productivity.

Microbial Consortium

To effectively manage powdery mildew caused by Leveillula taurica and Oidium sp. PRIMA Agro Tech offers an environmentally friendly and sustainable approach to powdery mildew control using this strategic blend of microorganisms. This solution not only addresses the immediate threat posed by the fungi but also contributes to the long-term health and resilience of the crops, ensuring better yield and quality.

Bacillus siamensis strain KCTC 13613: This bacterium plays a pivotal role in directly combating the powdery mildew fungi. It secretes antifungal compounds that disrupt the fungi’s cell structure, inhibiting their reproduction ability. This action not only reduces the current infection but also helps in preventing future outbreaks.

Bacillus subtilis strain PAH17: Renowned for its biocontrol abilities, this strain enhances the plant’s systemic resistance to fungal infections. It produces a broad spectrum of enzymes and secondary metabolites that have a dual effect: directly attacking the fungal cells of Leveillula taurica and Oidium sp. and inducing the plant’s defence mechanisms for more robust and long-lasting protection.

Paenibacillus polymyxa strain H-5: This bacterium contributes to overall plant health by improving soil fertility and promoting robust root growth. Its antifungal properties are crucial in creating an unsuitable environment for powdery mildew fungi, reducing their ability to infect the plants. Additionally, it helps colonise beneficial microbes in the rhizosphere, further strengthening the plants’ natural defences.

Bacillus amyloliquefaciens strain 50: Known for its plant-growth-promoting and biocontrol capabilities, this strain forms a protective barrier around the plant roots, which helps ward off the fungi. It also produces bioactive compounds that directly antagonise Leveillula taurica and Oidium sp., reducing viability and infection potential.

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