Table 2: Results of Monte Carlo simulations (n=2000)
|
coefficient |
t-ratio | ||||||
|
# |
OEPUL program |
mean |
5%-limit |
95%-limit |
mean |
5%-limit |
95%-limit |
|
1 |
Elementary support |
0.037 |
0.005 |
0.069 |
1.65 |
0.21 |
3.11 |
|
2 |
Organic farming |
-0.110 |
-0.145 |
-0.070 |
-4.38 |
-6.04 |
-2.65 |
|
3 |
Non-application of agro-chemicals, whole farm |
-0.065 |
-0.117 |
-0.011 |
-1.79 |
-3.28 |
-0.29 |
|
4 |
Crop rotation measures |
0.015 |
-0.008 |
0.037 |
0.99 |
-0.47 |
2.41 |
|
5 |
Extensive cereal cultivation |
-0.119 |
-0.148 |
-0.090 |
-6.21 |
-7.69 |
-4.69 |
|
6 |
Non-application of growth regulators |
-0.005 |
-0.029 |
0.021 |
-0.30 |
-1.75 |
1.18 |
|
7 |
Non-appl. easily sol. com. fert. & growth regulators |
-0.039 |
-0.104 |
0.032 |
--0.80 |
-2.16 |
0.65 |
|
8 |
Non-appl. easily sol. com. fert. & synth. chem. Crop prot. |
-0.028 |
-0.161 |
0.113 |
-0.29 |
-1.62 |
1.12 |
|
9 |
Non-application of fungicides |
-0.016 |
-0.102 |
0.068 |
-0.27 |
-1.68 |
1.09 |
|
10 |
Non-application of synthetic chemical crop protection |
-0.091 |
-0.258 |
0.068 |
-0.80 |
-2.28 |
0.59 |
|
hi, 1997 (no-OEPUL yields) |
0.849 |
0.770 |
0.933 |
16.69 |
15.98 |
17.36 | |
|
R2 |
0.35 |
0.34 |
0.36 | ||||
12
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