Browse on keywords: organic matter straw decomposition
Search results on 03/24/19
3013. Stroo, H.F., K.L. Bristow, L.F. Elliott, R.I. Papendick, and G.S.Campbell. 1989. Predicting rates of wheat straw decomposition.. Soil Sci. Soc. Am. J. 53:91-99.
Predicting the rate and extent of decomposition of residues at the soil surface is necessary to evaluate the impacts of minimum tillage practices on erosion control and thus ensure the most effective use of residues. A mechanistic model simulating the decomposition of surface-managed winter wheat residues was developed and model predictions were compared to results from field studies of decomposition rates.
3661. Knapp, E.B., L.F. Elliott, and G.S. Campbell. 1983. Microbial respiration and growth during the decomposition of wheat straw.. Soil Biol. Biochem. 15:319-323.
The response of the microflora to glucose additions indicated that the microbial populations were primarily limited by available C rather than available N after only 240 hr of incubation, even though about 95% of the original straw residue-C plus biomass C remained in the system.
3670. Knapp, E.B., L.F. Elliott, and G.S. Campbell. 1983. Carbon, nitrogen, and microbial biomass interrelationships during the decompostion of wheat straw: a mechanistic simulation model.. Soil Biol. Biochem. 15:455-461.
The effect of N on the disappearance of C from a wheat straw system, and the response of the biomass to N additions, was simulated using microbial growth and maintenance terms from the literature. Straw decomposition rate was shown to be strongly dependent on available C and N during initial decomposition. When N is limiting, excess available C apparently is immobilized as polysaccharides.