Effect of zinc solubilising bacteria on root colonization and zinc uptake in rice (Oryza sativa

Abstract

From the results, it may be concluded that isolated bacterial strain is able to proliferate root system and the inoculation of Pantoea agglomerans with 40 mg Zn produced the best result for root development and zinc acquisition from deficient soil.

Effect of Zn fertilizers and Zn solubilizing bacteria on yield, nutrient uptake and economics of rice (Oryza sativa L.)

“…The presence of increased amounts of zinc in soil solution due to zinc application may have facilitated zinc absorption through the phloem, resulting in an increase in zinc uptake in grain and straw at harvest. Similar result was reported by Prajapati et al (2021). In our experiment, both sources were taken with combination of Zn solubilizing microbes which further quicken the solubilization process and greater root interception for translocation of zinc.…”

“…Unfortunately, exogenous application of chemical fertilizers alone will not help in the long run to combat soil Zn deficiency because 96.0-99.0% of the applied Zn is converted to unavailable Zn pools by precipitation to carbonates, oxides, phosphates, and other compounds (Zhang et al 2017). As a result, a viable alternative would be to take advantage of certain soil microorganisms' to solubilize these fixed forms of Zn into labile Zn forms for increased availability and subsequent uptake by plants (Prajapati et al 2021). Some genera of bacteria such as Pseudomonas sp., Gluconacetobacter sp., Thiobacillus sp., Bacillus sp., Acinetobacter sp., etc.…”