Agriculture Reference
In-Depth Information
Table 3. Maximum likelihood estimates of production frontier
Variables
Parameters
Coefficient
t-ratio
Production function
Constant
α
0
6.6526
95.99***
ln Land
α
1
0.6044
10.37***
ln Labour
α
2
0.0925
2.75***
ln Fertilizer nutrients
α
3
0.0979
3.81***
ln Animal/mechanical power
α
4
0.0693
4.21***
ln Irrigation
α
5
0.0506
3.22***
0.5 x (ln Land)
2
β
11
-0.1068
-0.31
0.5 x (ln Labour)
2
β
22
0.0046
0.02
0.5 x (ln Fertilizer nutrients)
2
β
33
-0.0714
-0.78
0.5 x (ln Animal/mechanical power)
2
β
44
-0.0292
-0.55
0.5 x (ln Irrigation)
2
β
55
0.0008
0.04
β
12
ln Land x ln Labour
-0.0303
-0.12
β
13
ln Land x ln Fertilizer
0.1576
1.00
β
14
ln Land x ln Animal power
-0.1068
-1.11
β
15
ln Land x ln Irrigation
0.0816
1.76*
β
23
ln Labour x ln Fertilizer
-0.0445
-0.38
β
24
ln Labour x ln Animal power
0.1953
2.74***
ln Labour x ln Irrigation
β
25
-0.1337
-3.43***
ln Fertilizer x ln Animal power
β
34
-0.1010
-1.91*
ln Fertilizer x ln Irrigation
β
35
0.0194
0.46
ln Animal power x ln Irrigation
β
45
0.0131
0.50
Land type
φ
1
-0.0266
-3.56***
Soil type
φ
2
0.0055
0.85
Weed infestation
φ
3
-0.0070
-0.70
Pest infestation
φ
4
0.0081
0.90
Weather
φ
5
-0.0019
-0.27
Late sowing
φ
6
-0.0179
-1.89*
Soil fertility
φ
7
-0.0538
-6.63***
Jamalpur region
τ
1
-0.0439
-2.35**
Rajshahi region
τ
2
-0.0251
-0.63
Variance parameters
σ
2
= σ
u
2
+ σ
v
2
σ
2
10.32***
0.0039
γ = σ
u
2
/(σ
u
2
+ σ
v
2
)
3.77***
γ
0.6968
Log likelihood
Inefficiency effects function
Constant
δ
0
0.2028
1.89*
Age of the farmer
δ
1
0.0004
0.90
Education of the farmer
δ
2
-0.0033
-2.81***
Experience in wheat farming
δ
3
-0.0004
-0.35
Sowing date
δ
4
0.0413
4.98***
Timing of first top-dressing of urea
fertilizer
δ
5
0.0276
2.11**
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