Abstract
AbstractMicrobes are vital for agriculture, specifically for soil and plant health. Various mechanisms such as atmospheric nitrogen fixation, solubilization of mineral nutrients, synthesis of phytohormones and enzymes, and inhibition of phytopathogens play a crucial role in plant growth promotion which is being governed by specific microorganisms. Phosphorus (P) is one of the major limiting nutrients for plant growth and catastrophe in contemporary agriculture. Rapid P fixation and immobility in most soils, drastic reduction in phosphate rock reserves, poor use efficiency (<20%) of costly phosphatic fertilizers, etc. are the key concerns making agriculture unsustainable for P nutrition of plants. Further the continuous and elevated use of P fertilizers in agriculture accumulates insoluble residual soil P (RSP) in arable lands under intensive cultivation in different agro-ecosystems. Therefore this RSP is the important secondary P reserve in the soil system, and it has to be desorbed, solubilized, or mineralized to provide the phosphate anions for plant uptake. Here we have discussed the status and dissolution potential of phosphates in soils of arid regions. Various species of PGPM having the potential for solubilization and mobilization of insoluble RSP are considered as phosphate solubilizing microorganisms (PSM). Various species of bacteria, fungi, actinobacteria, cyanobacteria, etc. and their interactions were discussed and reported as potential PSM specifically for arid region soils. This chapter focuses on the occurrence, mechanisms, and the role of PSM in solubilization of RSP and mobilization for plant nutrition. The factors affecting P solubilization using PSM and their potential application in arid agro-ecosystem are enumerated. The future research priorities are being discussed in order to exploit the RSP accumulated in the soil systems for their efficient use in agricultural production systems.KeywordsAMFP mobilizationP solubilizationPGPMPSMResidual soil PArid agro-ecosystem
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
