Table 2 Cross-validation results of semivariogram experimental models on RBD disease severity during 2018 and 2019.

From: Spatial distribution and identification of potential risk regions to rice blast disease in different rice ecosystems of Karnataka

Model

Range (in degree)

Partial sill (C + C0)

Nugget (C0)

MSE

RMSE

ASE

2018

Spherical

0.59486

599.8945

0.5

693.1113

26.327

0.789

Exponential

0.59486

599.8945

0.5

820.0335

28.6362

1.0869

Gaussian

0.59486

599.8945

0.5

827.03527

29.7437

1.0017

2019

Spherical

0.59486

630.2836

0.5

719.3061

26.8199

0.7957

Exponential

0.59486

630.2836

0.5

828.5236

28.7841

1.0666

Gaussian

0.59486

630.2836

0.5

832.6147

29.9756

1.0374

  1. MSE mean square error, RMSE root mean square standard error, ASE average standard error.
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