1993
DOI: 10.1017/s0021859600085567
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Modelling the fate of nitrogen in crop and soil in the years following application of 15N-labelled fertilizer to winter wheat

Abstract: SUMMARYA computer model is presented that describes the flow of nitrogen between crop and soil on the field scale. The model has a compartmental structure and runs on a weekly time-step. Nitrogen enters via atmospheric deposition and by application of fertilizer or organic manures, and is lost through denitrification, leaching, volatilization and removal in the crop at harvest. Organic nitrogen is contained within three of the model compartments – crop residues (including plant material dying off through the g… Show more

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Cited by 231 publications
(146 citation statements)
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“…The humification coefficient (h) is defined as the fraction of organic matter remaining in the soil after 1 year and is calculated with Eqn 3 by setting t = 365 days (Bradbury et al 1993). The humification coefficient gives an estimation of the stable organic matter remaining in the soil and it is used as an indicator of C sequestration potential (Cayuela et al 2010).…”
Section: Chemical Analysesmentioning
confidence: 99%
“…The humification coefficient (h) is defined as the fraction of organic matter remaining in the soil after 1 year and is calculated with Eqn 3 by setting t = 365 days (Bradbury et al 1993). The humification coefficient gives an estimation of the stable organic matter remaining in the soil and it is used as an indicator of C sequestration potential (Cayuela et al 2010).…”
Section: Chemical Analysesmentioning
confidence: 99%
“…Generally, small pools with high turnover rates (referred to as ''decomposable'' or ''labile'' or ''active'') and larger pools with slower turnover rates (referred to as ''recalcitrant'' or ''resistant'' or ''slow'') are distinguished [14,51,92]. Some models consider microbial biomass as one of the defined pools while others do not include a biomass pool and model it as part of the stable organic matter/humus pool [41, 51,92,119].…”
Section: Multi-compartment Simulation Modelsmentioning
confidence: 99%
“…Some models contain few organic matter pools [14,57], some contain multiple pools of microbial biomass and protected and non-protected organic matter [114]; but most have fixed numbers of pools and so their structure is not easy to alter.…”
Section: Multi-compartment Simulation Modelsmentioning
confidence: 99%
“…3) GTEC hydrology is derived from the SUNDIAL model (Bradbury et al 1993). There are 12 soil layers: 0-50 cm in 5 cm increments, 50-100 cm, and 100-200 cm.…”
Section: )mentioning
confidence: 99%