TY - JOUR
T1 - Comparison of microbially enhanced compost extracts produced from composted cattle rumen content material and from commercially available inocula
AU - Shrestha, Karuna
AU - Adetutu, Eric
AU - Shrestha, Pramod
AU - Walsh, Kerry
AU - Harrower, Keith
AU - Ball, Andrew
AU - Midmore, David
PY - 2011/9
Y1 - 2011/9
N2 - A comparative study was performed on compost extracts prepared from cattle rumen content composted for three and nine months, nine month old compost inoculated with a Nutri-Life 4/20™ inoculum, and two commercial preparations (LivingSoil™ and Nutri-Life 4/20™), all incubated for 48h. Nutri-Life 4/20™ had the highest concentrations of NO3--N and K +-K, while rumen compost extract had higher humic and fulvic acids concentration. The bacterial and fungal community level functional diversity of three month old compost extract and of LivingSoil™, assessed with Biolog™, were higher than that of nine month old rumen compost extract, with or without Nutri-Life 4/20™ inoculum, or Nutri-Life 4/20™. No difference in fungal diversity was observed between treatments, as indicated by Denaturing Gradient Gel Electrophoresis (DGGE) analysis, however, bacterial diversity was higher in all compost extracts and LivingSoil™ compared to the Nutri-Life 4/20™. Criteria for judging the quality of a microbially enhanced extract are discussed.
AB - A comparative study was performed on compost extracts prepared from cattle rumen content composted for three and nine months, nine month old compost inoculated with a Nutri-Life 4/20™ inoculum, and two commercial preparations (LivingSoil™ and Nutri-Life 4/20™), all incubated for 48h. Nutri-Life 4/20™ had the highest concentrations of NO3--N and K +-K, while rumen compost extract had higher humic and fulvic acids concentration. The bacterial and fungal community level functional diversity of three month old compost extract and of LivingSoil™, assessed with Biolog™, were higher than that of nine month old rumen compost extract, with or without Nutri-Life 4/20™ inoculum, or Nutri-Life 4/20™. No difference in fungal diversity was observed between treatments, as indicated by Denaturing Gradient Gel Electrophoresis (DGGE) analysis, however, bacterial diversity was higher in all compost extracts and LivingSoil™ compared to the Nutri-Life 4/20™. Criteria for judging the quality of a microbially enhanced extract are discussed.
KW - Biolog™
KW - Commercial inoculum
KW - Compost extract
KW - PCR-DGGE
KW - Rumen compost
UR - http://www.scopus.com/inward/record.url?scp=79960846647&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2011.05.096
DO - 10.1016/j.biortech.2011.05.096
M3 - Article
SN - 0960-8524
VL - 102
SP - 7994
EP - 8002
JO - Bioresource Technology
JF - Bioresource Technology
IS - 17
ER -