Review Article
Year: 2020 | Month: April | Volume: 7 | Issue: 4 | Pages: 88-98
Carrier Based Bioformulations of PGPR- Characteristics, Shelf life and Application in Improving Health Status of Crop Plants- A Mini Review
Arka Pratim Chakraborty
Assistant Professor, Department of Botany, Raiganj University, Uttar Dinajpur-733134, West Bengal, India
ABSTRACT
The thin layer of soil (about 1 to 2mm thick) surrounding crop roots and the volume of soil occupied by roots is known as the rhizosphere. Plant growth results from interaction of roots and shoots with the environment. The environment for roots is the soil or planting medium which provide structural support as well as water and nutrients to the plant. Roots also support the growth and functions of a complex of microorganisms that can have a profound effect on the growth and survival of plants. These microorganisms constitute rhizosphere microflora and can be categorized as deleterious, beneficial, or neutral with respect to root/plant health. Beneficial interactions between roots and microbes are common in rhizosphere and can be enhanced. Increased plant growth and crop yield can be obtained upon inoculating seeds or roots with certain specific root-colonizing bacteria- plant growth promoting rhizobacteria (PGPR). Isolation of microorganisms, screening for desirable characters, selection of efficient strains and production of inocula are important steps for making use of this microbe-based technology. One of the common means of application of bacterial inoculants to soil is in the form of bioformulations. However, for easy handling of such bacteria, it is necessary to pack such bacteria in inert materials which can also be packaged and stored. The review presented below has been compiled mainly on important aspect on development of bioformulations of beneficial bacteria.
Keywords: PGPR, Carrier based bioformulations, Shelf life, Potential use, Health status of crops.
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