Wheat, winter, grain
plantpop
220.0
dmaxshoot
8.0
cbaflag
1
tgtyield
40.0
cbafact
1.0
cyrafact
1.0
hyldflag
0
hyldunits
bu/ac
hyldwater
10.9
hyconfact
148.833
idc
5
grf
0.8
ck
0.6
hui0
0.8
hmx
1.2
growdepth
0.025
rdmx
2.0
tbas
0.0
topt
25.0
thudf
1
dtm
270
thum
1333.3334
frsx1
-5.0
frsx2
-15.0
frsy1
0.005
frsy2
0.05
verndel
0.035
bceff
30.0
a_lf
0.013
b_lf
0.8013
c_lf
0.4293
d_lf
-0.086
a_rp
-0.018
b_rp
0.932
c_rp
0.556
d_rp
0.0736
a_ht
0.3293
b_ht
-0.086
ssaa
2.87
ssab
1.0
sla
20.0
huie
0.05
transf
0
diammax
0.3
storeinit
28.571428
mshoot
335.0
leafstem
1.4
fshoot
0.012
leaf2stor
0.1
stem2stor
0.1
stor2stor
0.0
rbc
2
standdk
0.0133
surfdk
0.0133
burieddk
0.0133
rootdk
0.0133
stemnodk
0.04
stemdia
0.0050
thrddys
17.1
covfact
5.227942
resevapa
-2.08165
resevapb
0.548606
yield_coefficient
1.4111
residue_intercept
0.077708535
regrow_location
0.0
noparam3
0.0
noparam2
0.0
noparam1
0.0
crop_notes
Annual, cool season grass, grain production,
suggest harvest oprn: Harvest, killing crop with percent standing stubble,
crop_devnotes
Archive:
Orginal record from ARS, wheat, winter. Res to Grain ratio based on core 5/2/94 40 bu/ac yield incl. winter dormant period
excl. NW Wheat & Range Region adj. dorm. for winter growth REV 61901 DTL
Standing Fall rate reduced from 0.12 to 0.04 #/(# days) because
WW-Chem fallow in SW KS showed too much standing residue was falling down. Larry Wagner recommended we
reduce fall rate. Dave L, Linda S., and I made runs to get the wt to match the standing stalk wt from Fred Fox stalk residue
samples WERU Lab. This rate left 24% of the starting count standing. This is well within the range of values of two paper.
Both paper showed about 46% left standing at the 440 day after harvest time. David Nelson, ARS Akron, CO also confirmed
that the orginal 8% standing was too low. He thought that the 24% was much more resonable. MAS 6-7-11