What is the role of phosphate solubilizing bacteria?
Phosphate solubilizing microbes (PSMs) are a group of beneficial microorganisms capable of hydrolyzing organic and inorganic insoluble phosphorus compounds to soluble P form that can easily be assimilated by plants.
Which medium is used for isolation of phosphate solubilizing bacteria?
Pikovskaya’s Agar Medium
Pikovskaya’s Agar Medium, is a selective medium for isolating PSB Species. The inoculated plates were incubated aerobically at 32°C for 9 to 10 days. After incubation, the colonies showing clear zone of phosphate solubilization were counted and expressed as colony forming unit (cfu) per gram of soil.
What is the significance of phosphate solubilizing bacteria in soil fertility?
Phosphorus solubilizing bacteria may also aid the growth of plants by stimulating the efficiency of biological nitrogen fixation, synthesizing phytohormones and enhancing the availability of some trace elements such as zinc and iron (Wani et al., 2007).
Where are phosphate solubilizing bacteria found?
Phosphorus solubilizing microbes especially PSB are widely distributed in soils, freshwater, seawater, and sediments (Liu et al., 2014, 2017; Zhang et al., 2015), and responsible for the cycling of insoluble P to soluble PO43– ion.
What is PSB culture in organic farming?
PSB can be used for all crops including paddy, millets, oilseeds, pulses and vegetables. Methods recommended for application are: ☛ Seed treatment ☛ Seedling dipping ☛ Soil application Seed treatment: Same as described for Rhizobium.
How do you make PSB fertilizer?
Whisk an egg, two tablespoons of fish sauce, and half tablespoon of msg. Add two tablespoons of the eggy-fishy mixture to a 1.25lt plastic bottle and shake it up with the water sample. Bathe in sun for 2-4 weeks. The resulting colour will depend on what PSB is present and the duration of the sun bathing.
Can phosphate solubilize aluminium phosphates in microorganisms?
Phosphate solubilizing potentiality of the microorganisms capable of utilizing aluminium phosphate as a sole phosphate source. Zentralblatt Microbiology. 1983;138:17–23.
Does rock phosphate solubilize fungi and vesicular arbuscular mycorrhiza?
The role of rock phosphate solubilizing fungi and vesicular arbuscular mycorrhiza (VAM) in growth of wheat plants fertilized with rock phosphate. World J Microbiol Biotechnol. 1998;14:211–219. doi: 10.1023/A:1008830129262.
How do phosphate-solubilizing microorganisms help the plant?
Phosphate-solubilizing microorganisms (PSMs) when applied in appropriate numbers into the rhizosphere help the plant by supplementing P in plant-utilizable form by several mechanisms. In addition, few PSMs also possess added features as plant growth-promoting rhizobacteria (PGPR) and biocontrol agents conferring protection from phytopathogens.
What is phosphate solubilization?
Phosphate solubilizing potentiality of the microorganisms capable of utilizing aluminium phosphate as a sole phosphate source. Zentralblatt Microbiology. 1983;138:17–23. [PubMed] [Google Scholar] Barber SA. Soil nutrient bioavailability. Wiley, New York: A mechanistic approach; 1995. [Google Scholar]