Influence of plant growth-promoting rhizobacteria inoculation on nutrient availability, soil microbial properties and defence enzymes in rice (Oryza sativa) crop

R K MEENA; Y V SINGH; LATA LATA; R PRASANNA; C KAUR; A KUMAR; R S BANA

doi:10.56093/ijas.v84i6.41483

Authors

R K MEENA Indian Agricultural Research Institute, New Delhi 110 012
Y V SINGH Indian Agricultural Research Institute, New Delhi 110 012
LATA LATA Indian Agricultural Research Institute, New Delhi 110 012
R PRASANNA Indian Agricultural Research Institute, New Delhi 110 012
C KAUR Indian Agricultural Research Institute, New Delhi 110 012
A KUMAR Indian Agricultural Research Institute, New Delhi 110 012
R S BANA Indian Agricultural Research Institute, New Delhi 110 012

https://doi.org/10.56093/ijas.v84i6.41483

Keywords:

Acetylene reduction activity, Basmati rice, PGPR, Poly phenol oxidase, Peroxidase, Soil chlorophyll

Abstract

Soil organic carbon, available N, P, K, Zn, Fe and Cu in soil at crop harvest stage significantly increased due to the integrated inoculation of PGPR and Multani mitti based BGA with application of compost and chemical N fertilizer (80 and 120 kg/ha) over N control. Status of SOC and available N, P, K, Fe, Zn and Cu in soil at crop maturity stage was highest at 2/3N+BI+CI+C@ 5.0 tonnes/ha. Soil chlorophyll, dehydrogenase and ARA activity were significantly higher at 2/3N+BI+CI+C@ 5.0 tonnes/ha compared to other treatments. Plant enzymatic activity of POD and PPO at 60 DAT also was significantly higher in 2/3N+BI+CI+Compost@ 5.0 tonnes/ha. Application of 2/ 3N with inoculation of bacterial and cyanobacterial PGPR along with 5.0 tonnes/ha compost not only improved nutrient availability in soil but also enhanced soil microbial, plant enzymatic activity and crop yield.

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