Table 2 Mean and standard deviation for inputs, environmental and location variables per irrigation category

Production (kilos)

114,114.30

351,117.10

18,721.30

41,402.10

9033.70

48,555.60

11,739.50

61,987.70

 Yield (kilos/hectares)

13,636.14

10,693.16

11,791.30

8734.11

11,227.95

8531.67

11,341.29

8591.53

Total surface (hectares)

24.93

36.70

4.44

12.73

15.81

25.25

14.08

24.21

 Cultivated land

4.76

9.94

1.47

3.09

0.66

1.89

0.83

2.54

Total labor (N°)

6.14

7.30

4.18

6.76

3.46

4.57

3.59

5.01

Capital (Chilean pesos^a)

6,862,143

8,778,120

3,394,974

7,209,798

2,408,747

4,253,057

2,608,270

4,932,854

Fertilizer machine use

 No use

84 %

91 %

97 %

96 %

 Draft animal

0

0.05 %

0.03 %

0.04 %

 Draft mechanical

15 %

7 %

2.4 %

3.3 %

Rainfall (mm)

963.1

513.8

467.3

343.7

1460.7

473

1319.5

405.9

 Standard deviation

208.7

100.8

189.9

90.7

220.3

30.4

215.3

48.1

 Skewness

−0.27

0.858

−0.043

0.818

0.033

0.794

0.018

0.79

Soil quality (ratio)

43.0 %

0.26

43.0 %

0.23

44.0 %

0.24

44.0 %

0.24

Location variables

 North zone

17.0 %

22.0 %

0.03 %

3.0 %

 Central zone

64.0 %

78.0 %

40.0 %

47.0 %

 South zone

17.0 %

0.0 %

59.0 %

49.0 %

Observations

70

1153

6051

7274