Table 1. Model Variables and Respective Estimated Coefficients (Continued).
Variable Meaning__________________________________________________Coefficient
drtwf Regular-till drill and/or air-seed with fertilizer, acres
pntwf No-till plant with fertilizer, acres
prtwf Regular-till plant with fertilizer, acres
Constant
β39
ha Total harvested acres β40
Error term
Table 2. Estimated Coefficients for the Four Different Models.
|
Variable |
_____Unit |
Model 1 |
Model 2 |
Model 3 |
Model 4 |
KASb |
|
fcwof |
$/acre |
5.60 |
5.66 |
5.55 |
5.69 |
5.92 |
|
swof |
$/acre |
5.42 |
5.43 |
5.39 |
5.43 |
5.38 |
|
dsk |
$/acre |
6.35 |
6.43 |
6.33 |
6.45 |
6.48 |
|
sch |
$/acre |
7.88 |
7.90 |
7.88 |
7.90 |
7.79 |
|
dch |
$/acre |
9.45 |
9.47 |
9.42 |
9.46 |
9.54 |
|
ddch |
$/acre |
9.27 |
9.31 |
9.27 |
9.30 |
9.54 |
|
mbp |
$/acre |
8.96 |
8.97 |
8.96 |
8.97 |
8.98 |
|
rcc |
$/acre |
6.41 |
6.41 |
6.40 |
6.41 |
6.25 |
|
dntwof |
$/acre |
10.08 |
10.07 |
10.03 |
10.11 |
9.89 |
|
drtwof |
$/acre |
5.93 |
5.99 |
5.88 |
6.00 |
6.49 |
|
pntwof |
$/acre |
9.90 |
9.86 |
9.79 |
9.94 |
10.02 |
|
prtwof |
$/acre |
8.15 |
8.21 |
8.11 |
8.21 |
8.03 |
|
spc |
$/acre |
3.66 |
3.69 |
3.63 |
3.70 |
3.75 |
|
spf |
$/acre |
3.73 |
3.73 |
3.73 |
3.73 |
3.75 |
|
spcf |
$/acre |
3.76 |
3.75 |
3.74 |
3.76 |
3.75 |
|
nh3 |
$/acre |
5.55 |
5.53 |
5.50 |
5.55 |
5.61 |
|
bdf |
$/acre |
3.42 |
3.42 |
3.41 |
3.43 |
3.53 |
|
ilf |
$/acre |
3.53 |
3.51 |
3.51 |
3.53 |
3.57 |
|
hw |
$/acre |
13.78 |
13.88 |
13.64 |
13.93 |
13.77 |
|
whtyd |
$/bushel |
0.131 |
0.131 |
0.130 |
0.131 |
0.131 |
|
hc |
$/acre |
20.17 |
20.28 |
20.08 |
20.26 |
19.43 |
|
cornyd |
$/bushel |
0.126 |
0.127 |
0.126 |
0.127 |
0.119 |
|
hgs |
$/acre |
14.32 |
14.23 |
14.14 |
14.35 |
14.58 |
|
gsyd |
$/bushel |
0.128 |
0.128 |
0.128 |
0.128 |
0.129 |
|
hsb |
$/acre |
19.02 |
19.16 |
18.99 |
19.16 |
19.48 |
|
sbyd |
$/bushel |
0.127 |
0.127 |
0.127 |
0.127 |
0.127 |
|
hsf |
$/acre |
18.00 |
18.00 |
17.99 |
18.01 |
17.93 |
|
swth |
$/acre |
8.35 |
8.37 |
8.36 |
8.38 |
8.20 |
|
rh |
$/acre |
2.92 |
2.93 |
2.93 |
2.93 |
2.88 |
|
slrb |
$/bale |
7.34 |
7.34 |
7.36 |
7.36 |
7.46 |
|
llrb |
$/bale |
7.99 |
8.02 |
7.99 |
8.02 |
8.15 |
18
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