CropSyst User Manual - sipeaa

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Contouring factorLand Slope Pc value1-2 0.63-5 0.56-8 0.59-12 0.613-16 0.717-20 0.821-25 0.9PsPtis the strip cropping factor for crop strip widths.1.0 for contouring only or for alternating strips of corn and small grain.0.75 for 4-year rotation with 2 year of row crop.0.50 for 1 year of row crop.is the terrace sedimentation factor.1.0 for no terraces.0.2 for terraces with graded channel sod outlets.0.1 for terraces with underground outlets.Land treatmentFor runoff computation, land treatment must be selected as specified in the USDA/SCS NationalEngineering Handbook ( USDA-SCS, 1988a ).
Nitrogen fertilizationAutomatic nitrogen fertilizationThere are three modes for automatic nitrogen application:Optimal N allocated directly to crop tissuesWith this option, the simulation will continuously supply N to the crop to optimize plantgrowth. The total N supplied is reported in the output report. This mode can be use to helpdetermine crop nitrogen requirements for optimal growth.
Page 1 and 2: Cropping Systems Simulation ModelUs
Page 3 and 4: ❍■■■■■■■■Soil■
Page 5 and 6: AbstractCropSyst is a is a user-fri
Page 8 and 9: This will save the currently edited
Page 10 and 11: The simulation will create a subdir
Page 12 and 13: DOS parameter editorTo run CropSyst
Page 14 and 15: ●LocationThe remaining main menu
Page 16 and 17: edited.Simulation descriptionA desc
Page 18 and 19: Chemical simulationWhen enabled, ch
Page 20 and 21: NH4 - Ammonium (kg N/ha initial N)N
Page 22 and 23: Soil profile initializationCropSyst
Page 24 and 25: Crop and management rotation tableC
Page 26 and 27: extension). Create the management f
Page 28 and 29: Residue water content (m³/kg)refer
Page 30 and 31: This is different than long term sc
Page 32 and 33: Additional requirementsIn order for
Page 34 and 35: Running CropSyst from the DOS comma
Page 36 and 37: ●●●●●●Green area indexT
Page 38 and 39: Management parameter editorCropSyst
Page 40 and 41: To delete an entry in the table, se
Page 42 and 43: January and December the year will
Page 44 and 45: specified if automatic irrigation i
Page 46 and 47: Based on biomassIn this mode, clipp
Page 48 and 49: Clipping fateFor either the Based o
Page 52 and 53: Based on nitrogen balanceNeed descr
Page 55 and 56: Tillage and residue stubble operati
Page 57 and 58: 105 Irrigated soil dry 5 -SCSCode D
Page 59 and 60: 119 Heavy double disc irrig. 36" 85
Page 61 and 62: Crop classificationThe first parame
Page 63 and 64: Crop planting parametersPlanting mo
Page 65 and 66: SoybeanSunflowerWheatGrass (cropped
Page 67 and 68: Thermal time to cease temperature l
Page 69 and 70: ❍Actual transpiration.
Page 71 and 72: Maximum leaf area index (LAI)The le
Page 73 and 74: Soybean 1.4-1.8 4 - 7Sunflower 1.7-
Page 75 and 76: eginning of grain filling X X -phys
Page 77 and 78: (mm/day) 10.0 - - - - - - - - - - 1
Page 79 and 80: Vernalization day requirement to co
Page 81 and 82: Crop harvestHarvest classificationT
Page 83 and 84: Crop residueThe amount of residue p
Page 85 and 86: Crop nitrogenNitrogen fixationFor l
Page 87 and 88: Crop salinityOsmotic potential for
Page 89 and 90: Crop dormancyAverage temperature fo
Page 91 and 92: Soil parameter editorThe soil entry
Page 93 and 94: Soil volatilizationVolatilization o
Page 95 and 96: SCS Curve number runoffCropSyst use
Page 97 and 98: Soil texturePercent Sand, Clay, Sil
Page 99 and 100: Soil layersThe number of soil layer
Page 101 and 102:
Information Source:❍ soil propert
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weather files and specify the prefi
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●●Arnold and William, 1989 .For
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❍parameters tableFor other sites,
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Min relative humidity, wind speedFo
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WindWind parameters are used by the
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Daily weather FilesWeather files ar
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General layout optionsCurrently the
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includes a balance for each chemica
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Arc CropSyst CoöperatorThe Arc Cro
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Using the ArcCS project editorThe p
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The output page is used to specify
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Questions●●What is a "combined
Page 127 and 128:
Note that only the numeric fields a
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GIS Coverages/ThemesA GIS Coverage
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6940745.000000 21426.680000 71 70 2
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1.93 6.7 4 3 SOIL30.87 3.9 5 2 SOIL
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ArcCS outputsA number of output fil
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Error log fileA detailed error log
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Visualizing Coöperator outputsOnce
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Watershed wizardThe Watershed wizar
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Graphics viewerThis utility is avai
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Report viewerThis utility is availa
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Batch run editorThe batch run edito
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DOS version batch run editorLike th
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Hints & Trouble Shooting:1.CROPSYST
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Simulation modelThis model is a dai
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Infiltration and soil water storage
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PrecipitationPreciptation is taken
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Potential evapotranspirationThe pot
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Penman-Monteith evapotranspirationm
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Relhumid min % Is the minimum relat
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λ (MJ/kg)is the latent heat of vap
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Soil evaporationActual soil evapora
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Runoff simulationsTwo water runoff
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PAW * =nlΣPAW l [ Z l - Z l-1Z l]l
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Row crops Terraced Good D 64 81 92R
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Pasture or Range Straight row Good
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REI' day is 0 if no daily precipita
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contours that store moisture and re
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greater than air dry water content
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Original soil freezing modelThe soi
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whereRFI1 (C- days ) is the require
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The use of these equations is expla
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Crop growth and developmentThe crop
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Crop plantingCropSyst provides two
Page 194 and 195:
RootingRoot growth occurs soon afte
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PhenologyThe stages of development
Page 198 and 199:
Above ground biomass accumulationCr
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Crop TranspirationAs a function of
Page 202 and 203:
C Tc · K · (ψ l,sc - ψ l,wilt )
Page 204 and 205:
The fraction of GAI produced in eac
Page 206 and 207:
VernalizationVernalization in crops
Page 208 and 209:
Photo-periodPlant development may r
Page 210 and 211:
Residue surface (kg/m²) is the amo
Page 212 and 213:
Nitrogen-dependent growthThe values
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CNU (kg/m²)is cumulative nitrogen
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UP max (kg N/day/m)is the maximum n
Page 218 and 219:
Fix w is constrained to the range [
Page 220 and 221:
C out (kg N/m³ water) is the nitro
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NRATE 35 = 0.8 (1/day) is the nitri
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Actual residue evaporationActual re
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Residue decompositionThe residue le
Page 228 and 229:
Note: Subsurface residues (shallow,
Page 230 and 231:
Irrigation management simulationAut
Page 232 and 233:
Simulation of the affects of tillag
Page 234 and 235:
steepness factor for the universal
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CropSyst User Manual - sipeaa

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