17 research outputs found
Effect of Carbon Distribution During the Microstructure Evolution of Dual-Phase Steels Studied Using Cellular Automata, Genetic Algorithms, and Experimental Strategies
Not Available
Not AvailableThe present study documents the biological properties
of the black soil region (BSR) of India in terms of culturable
microbial population. Besides surface microbial
population, subsurface population of individual
soil horizons is described to improve the soil information
system. An effort has been made to study
the depth-wise distribution and factors (bioclimates,
cropping systems, land use, management practices
and soil properties) influencing the microbial population
in the soils of the selected benchmark spots representing
different agro-ecological sub-regions of BSR.
The microbial population declined with depth and
maximum activity was recorded within 0–30 cm soil
depth. The average microbial population (log10 cfu g–1)
in different bioclimates is in decreasing order of SHm >
SHd > SAd > arid. Within cropping systems, legumebased
system recorded higher microbial population
(6.12 log10 cfu g–1) followed by cereal-based system
(6.09 log10 cfu g–1). The mean microbial population in
different cropping systems in decreasing order is legume
> cereal > sugarcane > cotton. Significantly higher
(P < 0.05) microbial population has been recorded in
high management (6.20 log10 cfu g–1) and irrigated
agrosystems (6.33 log10 cfu g–1) compared to low management
(6.12 log10 cfu g–1) and rainfed agrosystems
(6.17 log10 cfu g–1). The pooled analysis of data inclusive
of bioclimates, cropping systems, land use, management
practices, and edaphic factors indicates that
microbial population is positively influenced by clay,
fine clay, water content, electrical conductivity, organic
carbon, cation exchange capacity and base saturation,
whereas bulk density, pH, calcium carbonate and
exchangeable magnesium percentage have a negative
effect on the microbial population.Not Availabl