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. 2017 Feb 16;9(6):1151–1164. doi: 10.1111/gcbb.12422

Table 2.

List of all AquaCrop model parameters with their values for the two calibration years, i.e. the first (R2.1) and the second (R2.2) years of the second rotation

Parameter Description Unit R2.1 R2.2
CC0 Initial green canopy cover % 4 6
CCx Maximum green canopy cover m² m−2 0.96 0.96
CDC Canopy decline coefficient fraction GDD−1 0.004375 0.002302
CGC Canopy growth coefficient fraction  GDD−1 0.003131 0.004525
Cn Curve number 46 46
Eme Period from sowing to emergence GDDs 0 0
evardc Effect of canopy cover in reducing soil evaporation in late season % 70 70
HI Harvest index ((AGB‐leaves)/B) % 68 68
HIGC Growth coefficient for HI day−1
HIlength Period of harvest index build‐up (% of the growing cycle) % 50 50
HIini Initial value for harvest index % 0.01
KcTr,x
 Coefficient of maximum crop transpiration 0.99 0.99
K s Soil water stress coefficient 1 1
K sat Saturated hydraulic conductivity mm day−1 1200 1200
Ksb
 Cold stress coefficient 1 1
Mat Total length of crop cycle from sowing to maturity GDDs 3151 3236
mul Reduction of evaporation by mulches during the growing season % 21 86
mula Reduction in soil evaporation by mulches after growing season % 81 81
mulb Reduction in soil evaporation by mulches before growing season % 63 81
Root Period from sowing to maximum rooting depth GDDs 1683 1385
rtexlw Maximum root water extraction in bottom quarter of root zone m3 m−3 soil day−1 0.009 0.009
rtexup Maximum root water extraction in top quarter of root zone m3 m−3 soil day−1 0.036 0.036
rtn Minimum effective rooting depth m 0.8 0.8
rtx Maximum effective rooting depth m 0.8 0.8
Sen Period from sowing to start senescence GDDs 2482 1961
SWCfc Soil water content at field capacity vol% 22 22
SWCpwp Soil water content at wilting point vol% 10 10
SWCsat Soil water content at saturation vol% 41 41
T b Base temperature for crop development °C 0 0
T u Upper temperature for crop development °C 25 25
WP Water productivity normalized for ET0 and CO2 g m−2 10.4 14

GDDs: growing degree days.