Land type

Soil depth (cm)

Watermelon growth period

Seedling

vines

Bearing

expanding

mature

Un-mulched

0 - 10 cm

4.89

5.36

5.17

4.63

5.07

20 - 30 cm

8.15

7.92

8.58

6.91

9.03

30 - 40 cm

11.82

11.69

12.17

10.97

12.69

40 - 50 cm

15.68

16.09

15.95

14.39

16.06

50 - 60 cm

18.80

19.15

18.73

17.45

18.77

Gravel

mulched

0 - 10 cm

10.43

10.25

10.98

10.06

10.75

20 - 30 cm

13.97

14.37

14.86

14.11

14.65

30 - 40 cm

19.12

19.82

19.19

18.35

19.49

40 - 50 cm

24.17

23.43

24.76

23.58

25.33

50 - 60 cm

30.72

32.35

31.87

30.56

32.12