To run the Production Situation 1 model, you require the following data:
For the weather data, the following values are required for each day in a year:
Maximum temperature Minimum temperature Precipitation (not used in PS1) Relative humidity (can optionally be used) Evaporation (not used in PS1) Sun hours Evapotranspiration (not used in PS1).
A weather data file also contains the location of a weather station. We will inspect weather data files later, in the India groundnut case study.
For the crop data a number of variables are required, such as:
Tsum heat requirement for full development T0 threshold temperature for development C3/C4 photosynthetic mechanism SLA specific leaf area ke extinction coefficient for visible light r(org) relative maintenance respiration rates Tleaf heat sum for full development of leaf tissue Ec(org) efficiency of conversion fr(org) mass fraction of Fgass allocated to organ 'org'
See also chapter 8 and the appendices of the Driessen and Konijn book.
For the management data, only 3 values are required:
Planting day or germination day Day number when crop starts growing above ground Start values for organ masses S(leaf) at the planting day or germination day Mortality rate fraction of S(leaf) that will die on planting day / germination day
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