AME9.4standardFriOct09223222GMT2009node00083node00084node00085node00086node00087node00088node00089node00090node00091node00092node00093node00094node00095node00096node00097node00098node00099node00100node00101node00102node00103node00104node00105node00106node00107node00108node00109node00110node00111node00112node00113node00114node00115node00116node00117node00118node00119node00120node00121node00122node00123node00124node00125node00126node00127node00128node00129node00130node00131node00132node00133node00134node00135node00136node00139node00140node00141node00142node00143node00144node00145node00146node00147node00148node00149node00150node00151node00152node00153node00154node00155node00156node00157node00158node00159node00160node00161node00162node00163node00164node00165node00166node00167node00168node00169node00172node00173node00182node00183node00184node00185node00186node00187node00188node00189node00190node00191From the LINTUL documentation: "LINTUL1 simulates potential growth of a crop, i.e. its dry matter accumulation under ample supply of water and nutrients in a pest-, disease- and weed-free environment, under the prevailing weather conditions. The rate of dry matter accumulation is a function of irradiation and crop characteristics. The model makes use of the common observation that the crop growth rate under favourable conditions is proportional to the amount of light intercepted (Monteith, 1977). Dry matter production is, therefore, modelled as the product of light interception and a constant light use efficiency. The dry matter produced is partitioned among the various plant organs, using partitioning factors defined as a function of the phenological development stage of the crop. The dry weights of the plant organs are obtained by integration of their growth rates over time. "LINTUL1 requires as input physiological properties of the crop (in this case for spring wheat) and the actual weather conditions at the site, characterized by its geographical latitude, i.e. daily maximum and minimum temperatures and irradiation for each day of the year." This version of the LINTUL has been implemented from the FST version of the model (LINTUL1) available from http://www.cwe.wur.nl/UK/Downloads/LINTUL. This version of the model does not use an input file of daily values for irradiation, min. temperature and max. temperature, but instead sets these inputs to a constant value. The model outputs have been inspected to check that they are reasonable, but the model has not been validated against reference results for the FST version (which in any case appear not to be available on the web site).trueLINTUL: A simple general crop growth model for optimal growing conditionsnonenonenonelintul_v10trueDaily global radiation (J/m2/d)RDDtruefn4420*10^6120106trueDaily minimum temperature (degreeC)TMMNtruefn458int8trueDaily maximum temperature (degreeC)TMMXNWtruefn4612int12trueDaily global radiation (MJ m-2 day-1)DTRtruefn47RDD/10^61RDD106trueDaily average temperature (degreeC)DAVTMPtruefn480.5*(TMMN+TMMXNW)10.5TMMNTMMXNWtrueAuxiliary variable indicating crop emergence (unspecified)EMERGtruefn49if time(1)<DOYEM then 0 else 1int0lttime1DOYEM1trueLeaf area index (m2 m-2)LAItruefn50010truecd8truefn51if TSUM<330 and LAI<0.75 then LAI*(exp(RGRL*DTEFF*DELT)-1)/DELT elseif time(1)>=DOYEM and LAI==0 then LAII/DELT elseif time(1)<DOYEM then 0 else SLA*GLV1LAIexpRGRLDTEFFDELT1DELTltTSUM330ltLAI0.75LAIIDELTgeqtime1DOYEMeqLAI00lttime1DOYEMSLAGLVtruecd9truefn52LAI*RDR1LAIRDRtrueRelative death rate of leaves (day-1)RDRtruefn53max(RDRDV,RDRSH)1maxRDRDVRDRSHtrueRelative death rate of leaves due to ageing (day-1)RDRDVtruefn54if TSUM-TSUMAN<0 then 0 elseif DAVTMP<10 then 0.03 elseif DAVTMP<15 then 0.03+0.01*(DAVTMP-10)/5 elseif DAVTMP<30 then 0.04+0.05*(DAVTMP-15)/15 else 0.0910ltTSUMTSUMAN00.03ltDAVTMP100.030.01DAVTMP105ltDAVTMP150.040.05DAVTMP1515ltDAVTMP300.09trueRelative death rate of leaves due to shading (day-1)RDRSHtruefn55min(max(RDRSHM*(LAI-LAICR),0),RDRSHM)1minmaxRDRSHMLAILAICR0RDRSHMtrueTemperature sum (degreeC day)TSUMtruefn56010truecd10truefn57DTEFF*EMERG1DTEFFEMERGtrueDaily effective temperature (degreeC)DTEFFtruefn58max(0,DAVTMP-TBASE)1max0DAVTMPTBASEtrueFraction of dry matter allocated to the leaves (dimensionless)FLVtruefn59if TSUM<=110 then 0.330 elseif TSUM<=275 then 0.33+0.13*(TSUM-110)/165 elseif TSUM<=555 then 0.46-0.02*(TSUM-275)/280 elseif TSUM<=780 then 0.44-0.30*(TSUM-555)/225 elseif TSUM<=1055 then 0.14-0.14*(TSUM-780)/275 else 010.33leqTSUM1100.330.13TSUM110165leqTSUM2750.460.02TSUM275280leqTSUM5550.440.3TSUM555225leqTSUM7800.140.14TSUM780275leqTSUM10550trueIntercepted photosynthetically active radiation (MJ m-2 day-1)PARINTtruefn600.5*DTR*(1-exp(-1*K*LAI))10.5DTR1exp1KLAItrueLight use efficiency (dry matter produced per unit of intercepted photosynthetically active radiation) (g MJ-1)LUEtruefn613.013.0trueGrowth rate of total crop dry matter (g m-2 day-1)GTOTALtruefn62LUE*PARINT1LUEPARINTtrueGrowth rate of leaf dry matter (g m-2 day-1)GLVtruefn63FLV*GTOTAL1FLVGTOTALtrueExtinction coefficient for photosynthetically active Extinction coefficient for photosynthetically active radiation (dimensionless)Ktruefn640.610.6trueDry weight of green leaves (g m-2)WLVGtruefn65WLVI1WLVItrueDry weight of dead leaves (g m-2)WLVDtruefn66010trueDry weight of stems (g m-2)WSTtruefn67010trueDry weight of storage organs (g m-2)WSOtruefn68010trueDry weight of roots (g m-2)WRTtruefn69010truecd11truefn70GTOTAL*FLV11GTOTALFLV1truefn72WLVG*RDR1WLVGRDRtruecd13truefn73GTOTAL*FST11GTOTALFST1truecd14truefn74GTOTAL*FSO11GTOTALFSO1truecd15truefn75GTOTAL*FRT11GTOTALFRT1trueFraction of dry matter allocated to the stems (dimensionless)FSTtruefn76if TSUM<110 then 0.17 elseif TSUM<=275 then 0.17+0.3*(TSUM-110)/165 elseif TSUM<=555 then 0.2+0.22*(TSUM-275)/280 elseif TSUM<=780 then 0.44+0.35*(TSUM-555)/125 elseif TSUM<=1055 then 0.79+0.18*(TSUM-780)/275 elseif TSUM<=1160 then 0.97+0.03*(TSUM-1055)/105 else 010.17ltTSUM1100.170.3TSUM110165leqTSUM2750.20.22TSUM275280leqTSUM5550.440.35TSUM555125leqTSUM7800.790.18TSUM780275leqTSUM10550.970.03TSUM1055105leqTSUM11600trueFraction of dry matter allocated to the storage organs (dimensionless)FSOtruefn77if TSUM<=1055 then 0 elseif TSUM<=1160 then 1*(TSUM-1055)/105 else 110leqTSUM10551TSUM1055105leqTSUM11601if XNW<110 then 0.5 else 0.670400117211131 -0.00165731677076904*XNW +1.6257778544886223*10^-6*XNW^2 -7.305053028227257*10^-10*XNW^3 +1.2098204424148753*10^-13*XNW^4trueFraction of dry matter allocated to the roots (dimensionless)FRTtruefn78min(0.5,0.5*exp(0.003*(TSUM-110)))1min0.50.5exp0.003TSUM110trueBase temperature (degreeC)TBASEtruefn790.010.0trueInitial leaf area index (at crop emergence) (m2/m2)LAIItruefn800.01210.012trueSpecific leaf area (m2 g-1)SLAtruefn810.02210.022trueRelative growth rate of LAI during exponential growth (degreeC-1 day-1)RGRLtruefn820.00910.009trueTemperature sum at anthesis (degreeC*day)TSUMANtruefn831110int1110trueCritical LAI beyond which leaves die due to self-shading (m2/m2)LAICRtruefn844.014.0trueMaximum relative death rate of leaves due to shading (day-1)RDRSHMtruefn850.0310.03trueDaynumber at crop emergence (day)DOYEMtruefn8632int32trueTime step of integration (day)DELTtruefn871.011.0trueInitial dry weight of green leaves (at crop emergence) (g m-2)WLVItruefn89LAII/SLA1LAIISLAtrueFraction of dry matter allocated to the leaves (normalised) (dimensionless)FLV1truefn94FLV/Fsum1FLVFsumtrueFraction of dry matter allocated to the stems (normalised) (dimensionless)FST1truefn95FST/Fsum1FSTFsumtrueFraction of dry matter allocated to the storage organs (normalised) (dimensionless)FSO1truefn96FSO/Fsum1FSOFsumtrueFraction of dry matter allocated to the roots (normalised) (dimensionless)FRT1truefn97FRT/Fsum1FRTFsumtrueFsumtruefn98FST+FSO+FRT+FLV1FSTFSOFRTFLVi112i113i114i115truei131nonein_hierarchyRDD1i116truei132nonein_hierarchyTMMNinttruei133nonein_hierarchyTMMXNWinti117i118trueGrowth rate of leaf area index (m2 m-2 day-1)GLAIi119truei185nonein_hierarchyLAI1trueDeath rate of leaf area index (m2 m-2 day-1)DLAIi120truei123nonein_hierarchyLAI1truei122nonein_hierarchyRDR1i121truei126nonein_hierarchyRDRDV1i124truei194nonein_hierarchyDAVTMP1truei127nonein_hierarchyRDRSH1i125truei197nonein_hierarchyLAI1truei130nonein_hierarchyTSUM1truei187nonein_hierarchyTSUM1i128trueRate of increase of the temperature sum (degreeC day day-1)RTSUMi129truei135nonein_hierarchyEMERGinttruei136nonein_hierarchyDTEFF1truei188nonein_hierarchyDTEFF1i134truei216nonein_hierarchyDAVTMP1i137truei213nonein_hierarchyTSUM1i138truei144nonein_hierarchyDTR1truei145nonein_hierarchyLAI1i139i140truei146nonein_hierarchyLUE1truei147nonein_hierarchyPARINT1truei183nonein_hierarchyGLV1i141truei142nonein_hierarchyFLV1truei143nonein_hierarchyGTOTAL1truei149nonein_hierarchyK1i148i150trueDeath rate of leaves (g m-2 day-1)DLVi151i152i153i154trueGrowth in dry weight of leaves (g m-2 day-1)grWLVGi155truei158nonein_hierarchyGTOTAL1i159truei172nonein_hierarchyRDR1truei173nonein_hierarchyWLVG1trueGrowth in dry weight of stems (g m-2 day-1)grWSTi160truei166nonein_hierarchyGTOTAL1trueGrowth in dry weight of storage organs (g m-2 day-1)grWSOi161truei167nonein_hierarchyGTOTAL1trueGrowth in dry weight of roots (g m-2 day-1)grWRTi162truei168nonein_hierarchyGTOTAL1i163truei211nonein_hierarchyTSUM1i164truei234nonein_hierarchyTSUM1i165truei214nonein_hierarchyTSUM1truei217nonein_hierarchyTBASE1i174truei191nonein_hierarchyLAII1i175truei182nonein_hierarchySLA1i176truei186nonein_hierarchyRGRL1i177truei192nonein_hierarchyTSUMANinti178truei198nonein_hierarchyLAICR1i179truei196nonein_hierarchyRDRSHM1i180truei184nonein_hierarchyDOYEMinttruei215nonein_hierarchyDOYEMinti181truei190nonein_hierarchyDELT1i189truei200nonein_hierarchyWLVI1i199truei201nonein_hierarchySLA1truei202nonein_hierarchyLAII1truei240nonein_hierarchyFLV11i221truei225nonein_hierarchyFLV1truei241nonein_hierarchyFST11i222truei226nonein_hierarchyFST1truei242nonein_hierarchyFSO11i223truei227nonein_hierarchyFSO1truei243nonein_hierarchyFRT11i224truei228nonein_hierarchyFRT1truei236nonein_hierarchyFsum1truei237nonein_hierarchyFsum1truei238nonein_hierarchyFsum1truei239nonein_hierarchyFsum1i229truei231nonein_hierarchyFST1truei232nonein_hierarchyFSO1truei233nonein_hierarchyFRT1truei235nonein_hierarchyFLV1