By Ajay Singh, Nagina Parmar, Ramesh C. Kuhad
Bioaugmentation, biostimulation and biocontrol techniques utilizing microbial inoculants, biofertilizers, biochemicals and natural amendments enhance soil biology, fertility and crop productiveness by way of offering plant growth-promoting nutrition and suppressing soil-borne ailments and plant-parasitic nematodes. Our wisdom of microbial range and its functionality in soils has been elevated significantly as a result of the availability of a wealth of information won via fresh advances within the improvement of molecular equipment and metagenomics for the assessment of microbial variety and capabilities within the rhizosphere surroundings of soil.
Chapters facing the appliance of biofertilizers and natural amendments are contributed by way of specialists – specialists within the quarter of soil technology together with microbiology and molecular biology – from educational associations and the industry.
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Extra info for Bioaugmentation, Biostimulation and Biocontrol
The use of plant growth-promoting organisms or biofertilizers could be a better alternative to chemical fertilizers. They are economical, not harmful to the environment, and could easily be found. Microbial inoculants, which can fulfill diverse functions in plants, lead to promising solutions for a sustainable, environmentally friendly agriculture. References Abhilash PC, Jamil S, Singh N (2009) Transgenic plants for enhanced biodegradation and phytoremediation of organic xenobiotics. Biotechnol Adv 27:474–488 Ahmad R, Jilani G, Arshad M, Zahir ZA, Khalid A (2007) Bio-conversion of organic wastes for their recycling in agriculture: an overview of perspectives and prospects.
Certain species of Azospirillum have been used to study the relationship between free-living nitrogen-fixing rhizobacteria and legumes. Abundant in the rhizosphere, Azospirilla possesses a versatile metabolic system where carbon and nitrogen are metabolized readily. In an unfavourable arid or nutrient-deficient conditions, Azospirilla can morphologically transform into what appears to be enlarged cysts and the development of an outer polysaccharide coat by accumulating poly-L-hydroxybutyrate granules which serve as carbon and energy sources.
CRP55b” showed maximum increase in all the symbiotic parameters. On co-inoculation with Rhizobium strains “Ca181” and “Ca313”, Pseudomonas sp. “CRP55b” and “CRS68” resulted in significant increases in nodule weight, root and shoot biomass and total plant nitrogen (Fig. 1). The nodulestimulating rhizobacteria enhanced levels of flavonoid-like compounds in roots on seed bacterization. In another study, a greater number of nodules per plant were also produced where Bradyrhizobia was used with strains of Pseudomonas aeruginosa compared with Bradyrhizobia used alone (Izhar et al.
Bioaugmentation, Biostimulation and Biocontrol by Ajay Singh, Nagina Parmar, Ramesh C. Kuhad