Enriching vermicompost by nitrogen fixing and phosphate solubilizing bacteria

Enriching vermicompost by nitrogen fixing and phosphate solubilizing bacteria
Vivek KumarCorresponding Author Contact Information, a and K. P. Singhb
a Department of Microbiology, CCS Haryana Agricultural University, Hisar-125 004, India
b Department of Agronomy, CCS Haryana Agricultural University, Hisar-125 004, India

Abstract

The effect of inoculation of vermicompost with nitrogen-fixing Azotobacter chroococcum strains, Azospirillum lipoferum and the phosphate solubilizing Pseudomonas striata on N and P contents of the vermicompost was assessed. Inoculation of N2 fixing bacteria into vermicompost increased contents of N and P. Enriching vermicompost with rock phosphate improved significantly the available P when inoculated with P. striata. During the incubation period, the inoculated bacterial strains proliferated rapidly, fixed N and solubilized added and native phosphate.

Author Keywords: Vermicompost; Enrichment; N–P contents; Azotobacter chroococcum; Azospirillum lipoferum; Pseudomonas striata

Bioresource Technology
Volume 76, Issue 2, January 2001, Pages 173-175