Model implementation in PlaSMo

PlaSMo is a demonstration project.

It is funded for 2 years and will implement some 10 models representative of a range of plant modelling types as described below.

General crop models which have been used for a range of plant species
  • LINTUL, a simple general crop growth model simulating dry matter production as the result of light interception and utilization with a constant light use efficiency. It has been used to model growth of both monocot  (maize, wheat) and dicot (potato, oilseed rape) crops.
  • SUCROS, a more complex model than LINTUL which explains crop growth on the basis of the underlying processes, such as CO2 assimilation and respiration, as influenced by environmental conditions and the photosynthetic characteristics of individual leaves. SUCROS has been applied to sugar beet, carrot and cereal crops, among others.
Models specific to individual crops
  • AFRCWHEAT2, a mature, widely-used model of wheat growth, which describes phenological development, dry matter production and its distribution between the organs for various environmental parameters on a daily time scale
  • MisCanMod5, a productivity model for the bioenergy grass Miscanthus that allows prediction of water-limited and non-limited yield under a range of climatic conditions, including predicted climate change scenarios.
Organ-level models
  • AuxSim, an Arabidopsis auxin transport model, written in Fortran. Outputs from work on this model in PlaSMo will feed into the virtual root project at CIPB Nottingham, who requested the model to be included.
  • Arabidopsis leaf model. Model of how transient starch production is thought to control growth and response to elevated CO2 in Arabidopsis. The model is currently in FORTRAN and uses the C3 photosynthesis model below as a submodel.
Generalised models of a plant biological process
  • C3 photosynthesis model. (Farquhar, von Caemmerer and Berry). Generalised model of C3 photosynthesis that calculates the net rate of photosynthesis under given conditions. The model will be of interest in itself, could form a submodel of plant/crop models and be used to interpret experimental results.
Models for complex multi-component plant systems
  • The Hurley Pasture Model6 (HPM), which models the growth of temperate swards (all grass, all legume, grass-legume mix) and accounts for carbon, nitrogen and water pools and fluxes in the plant, and soil system. It can represent environmental processes including daylength, wind, humidity, radiation, CO2, air and soil temperature, and rainfall, and can optionally be extended to include animal interactions.
  • The Edinburgh Forest Model7 (EFM), a complex model used for simulating the growth of plantations or natural forests under a range of environmental and management scenarios It includes a soil and a water sub-model as well as a tree sub-model in which the contributions of light interception, photosynthesis, growth, respiration, within-plant transport, transpiration, plant N uptake, internal N recycling, and exudation of C and N can all be represented.