The Use of Spatial Interpolation to Improve the Quality of Corn Silage Data in Case of Presence of Extreme or Missing Values
Agricultural spatial analysis has the potential to offer new ways of analyzing crop data considering the spatial information of the measurements. Moving from farmers’ estimates and crop-cuts techniques to interpolation is a new challenge, and a promising path to achieving more reliable results, espe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | ISPRS International Journal of Geo-Information |
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| Online Access: | https://www.mdpi.com/2220-9964/11/3/153 |
| _version_ | 1797471045251235840 |
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| author | Thomas M. Koutsos Georgios C. Menexes Ilias G. Eleftherohorinos |
| author_facet | Thomas M. Koutsos Georgios C. Menexes Ilias G. Eleftherohorinos |
| author_sort | Thomas M. Koutsos |
| collection | DOAJ |
| description | Agricultural spatial analysis has the potential to offer new ways of analyzing crop data considering the spatial information of the measurements. Moving from farmers’ estimates and crop-cuts techniques to interpolation is a new challenge, and a promising path to achieving more reliable results, especially in the case of field data with extreme or missing values. By comparing the main descriptive statistics of three types of crop parameters (fresh weight, dry weight, and ear weight) in three randomly taken maize plots, we found that the issue of missing values can be addressed by using interpolation to calculate estimated values of given parameters in non-sampling locations. Moreover, based on the descriptive statistics, the implementation of interpolation can reduce crop field variability (extreme values) and achieve an improvement of coefficient of variation (<i>CV</i>) values up to 30%, compared with other methods used, such as the replacing of missing values by the average of all data, or the average of the row or column, with an improvement of only up to 15%. These findings strongly suggest that the implementation of an interpolation method in case of extreme or missing values in crop data is an effective process for improving their quality, and consequently, their reliability. As a result, the application of spatial interpolation to existing crop data can provide more dependable estimations of average crop parameters values, compared to the usual farmers’ estimates. |
| first_indexed | 2024-03-09T19:44:00Z |
| format | Article |
| id | doaj.art-0d9bf730ab0940cd8c265d1090577dde |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-03-09T19:44:00Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-0d9bf730ab0940cd8c265d1090577dde2023-11-24T01:28:00ZengMDPI AGISPRS International Journal of Geo-Information2220-99642022-02-0111315310.3390/ijgi11030153The Use of Spatial Interpolation to Improve the Quality of Corn Silage Data in Case of Presence of Extreme or Missing ValuesThomas M. Koutsos0Georgios C. Menexes1Ilias G. Eleftherohorinos2School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceSchool of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceSchool of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceAgricultural spatial analysis has the potential to offer new ways of analyzing crop data considering the spatial information of the measurements. Moving from farmers’ estimates and crop-cuts techniques to interpolation is a new challenge, and a promising path to achieving more reliable results, especially in the case of field data with extreme or missing values. By comparing the main descriptive statistics of three types of crop parameters (fresh weight, dry weight, and ear weight) in three randomly taken maize plots, we found that the issue of missing values can be addressed by using interpolation to calculate estimated values of given parameters in non-sampling locations. Moreover, based on the descriptive statistics, the implementation of interpolation can reduce crop field variability (extreme values) and achieve an improvement of coefficient of variation (<i>CV</i>) values up to 30%, compared with other methods used, such as the replacing of missing values by the average of all data, or the average of the row or column, with an improvement of only up to 15%. These findings strongly suggest that the implementation of an interpolation method in case of extreme or missing values in crop data is an effective process for improving their quality, and consequently, their reliability. As a result, the application of spatial interpolation to existing crop data can provide more dependable estimations of average crop parameters values, compared to the usual farmers’ estimates.https://www.mdpi.com/2220-9964/11/3/153spatial analysisexperimentsagricultural experimentation |
| spellingShingle | Thomas M. Koutsos Georgios C. Menexes Ilias G. Eleftherohorinos The Use of Spatial Interpolation to Improve the Quality of Corn Silage Data in Case of Presence of Extreme or Missing Values ISPRS International Journal of Geo-Information spatial analysis experiments agricultural experimentation |
| title | The Use of Spatial Interpolation to Improve the Quality of Corn Silage Data in Case of Presence of Extreme or Missing Values |
| title_full | The Use of Spatial Interpolation to Improve the Quality of Corn Silage Data in Case of Presence of Extreme or Missing Values |
| title_fullStr | The Use of Spatial Interpolation to Improve the Quality of Corn Silage Data in Case of Presence of Extreme or Missing Values |
| title_full_unstemmed | The Use of Spatial Interpolation to Improve the Quality of Corn Silage Data in Case of Presence of Extreme or Missing Values |
| title_short | The Use of Spatial Interpolation to Improve the Quality of Corn Silage Data in Case of Presence of Extreme or Missing Values |
| title_sort | use of spatial interpolation to improve the quality of corn silage data in case of presence of extreme or missing values |
| topic | spatial analysis experiments agricultural experimentation |
| url | https://www.mdpi.com/2220-9964/11/3/153 |
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