Spatial Variability Analysis of Paddy Rice Yield in Field
Lee, C.K.;Jung, I.G.;Sung, J.H.;Kim, S.C.;Park, W.P.;Lee, Y.B.(National Institute of Agricultural Engineering, RDA, Suwon, Republic of Korea)E-mail:cklee@rda.go.kr | Umeda, M.(Kyoto University, Kyoto, Japan)
Using geo-statistical method, yield data of different fields were analyzed to examine their field variability according to examining year, analysis method. Semivariogram and Kriged maps of geo-statistical analysis were used to examine their spatial dependence within a filed. The results obtained were as follows. 1) Descriptive statistical results of the yield showed that the yield and the difference of yield ranged from 100 to 946㎏/10a and from 272 to 653㎏/10a, respectively within a field. The coefficient of variation also ranged from 5.9 to 22.4 %.
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