Publication Date
1993
Description
Amount and dynamics of microbial biomass were studied in 3 different agricultural systems which has been cropped for 27 years on a mollisol. Plots were sampled 5 times between June 1989 and January 1990, Average microbial biomass was higher in the pasture-crop system than in the continuous crop system, Seasonal variations in biomass were related to periods of active plant growth and warmer temperatures. Quantities of nitrogen (N) and phosphorus (P) immobilised in soil biomass were also higher in the crop pasture system and were linearly related to biomass carbon. Mean annual fluxes through biomass (20 cm depth) were estimated and compared with crop N and P extractions.
Citation
Garcia, A and Moron, D A., "Studies on Soil Microbial Biomass Carbon, Nitrogen and Phosphorus in Three Crop Rotation Systems" (2024). IGC Proceedings (1993-2023). 15.
https://uknowledge.uky.edu/igc/1993/session40/15
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Studies on Soil Microbial Biomass Carbon, Nitrogen and Phosphorus in Three Crop Rotation Systems
Amount and dynamics of microbial biomass were studied in 3 different agricultural systems which has been cropped for 27 years on a mollisol. Plots were sampled 5 times between June 1989 and January 1990, Average microbial biomass was higher in the pasture-crop system than in the continuous crop system, Seasonal variations in biomass were related to periods of active plant growth and warmer temperatures. Quantities of nitrogen (N) and phosphorus (P) immobilised in soil biomass were also higher in the crop pasture system and were linearly related to biomass carbon. Mean annual fluxes through biomass (20 cm depth) were estimated and compared with crop N and P extractions.
