Pseudo is mainly used for direct soil application. It can be used for seed treatment and foliar spraying. Pseudo is characterized by their twin properties, i.e., disease suppression and plant growth promotion. Pseudo are antagonistic to several root pathogenic fungi, bacteria, nematodes and several foliar fungal and bacterial pathogens.
MODE OF ACTION
Disease suppression: The biocontrol activity of Pseudo is through four main mechanisms, viz., Competition, Antibiosis Mycoparasitism and Induced Systemic Resistance (ISR).Competition refers to the substrate competition for space & nutrients. When we apply Pseudo, around the base of the plants, it grows quickly and forms a protective cover and prevents the entry of pathogens, thus competing for space. Pseudo also produce certain siderophores, that have high chelating effect with iron (Fe3+). Siderophores combine with Fe3+ ions in the soil and make it unavailable for the pathogenic fungi. Fe3+ is essential for the germination of fungal spores.Antibiosis refers to the production of antibiotics and several secondary metabolites with antibiotic activities against soil – borne plant pathogens. Some important such metabolites are Pyocyanine, phenazine-1-carboxylic acid (PCA), Oomycin A, Pyoluteorin, 2, 4 – diacetylphloroglucinol (DAPG), HCN and Pyrrolnitrin.Mycoparasitism refers to the parasitization, disintergration of pathogen hyphae by secreting lytic enzymes like chitinase, proteases, lipases and b – 1, 3 – glucanases.
Pseudo can also suppress diseases caused by foliar pathogens by triggering plant – mediated resistance mechanism called Induced Systemic Resistance (ISR) in plants against subsequent infection by fungal, bacterial and viral pathogens.
Plant growth promotion: Pseudo helps in plant growth promotion through the production of growth promoting hormones like gibberelic acid, indole acetic acid and naphthaline acetic acid. They promotes seed germination and early flowering & fruiting
Mix 20 gm thoroughly with 1 litre of water. Decant the supernatant and spray on the foliar and suspand the residue in water and drench in the plant basin.