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Table 1 Mean for observed and simulated yields, RMSE, percentage error, and WIA for tested crops

From: Simulating the yields of bioenergy and food crops with the crop modeling software BioSTAR: the carbon-based growth engine and the BioSTAR ET0 method

 

Mean observed

Mean simulated

RMSE

Number

Percentage error

WIA

Maize

17.7

18.2

2.1

31

11.9

0.94

Winter wheat

15.8

16.1

1.6

102

10.1

0.86

Beet (all)

21.0

21.8

2.4

40

11.4

0.77

Beet (clay)

15.9

21.1

1.7

8

10.7

0.94

Beet (no clay)

22.3

21.9

2.4

32

10.8

0.85

Winter barley

16.3

16.1

1.8

6

11.0

0.64

Winter rye

18.3

18.7

1.9

6

10.4

0.73

Sunflower

13.3

13.4

1.6

9

12.0

0.56

Sorghum

17.0

17.3

1.0

5

5.9

0.78

All crops

17.2

17.7

2.1

198

12.2

0.92

  1. WIA, Willmott index of agreement (1 = perfect agreement, 0 = no agreement). Mean observed, mean simulated, and RMSE (root-mean-square error) given in tones dry mass per hectare.