Differentiating stress to wheat fields induced by Diuraphis noxia from other stress causing factors
| Autor: | Georges F. Backoulou, Norman C. Elliott, Mahesh N. Rao, Kristopher L. Giles |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
biology
Stress induced Multispectral image food and beverages Forestry Horticulture biology.organism_classification Diuraphis noxia Computer Science Applications Stress (mechanics) Induced stress Discriminant function analysis Common spatial pattern Russian wheat aphid Biological system Agronomy and Crop Science Remote sensing |
| Zdroj: | Computers and Electronics in Agriculture. 90:47-53 |
| ISSN: | 0168-1699 |
| Popis: | Highlights? Diuraphis noxia induced stress and cause economic loss to wheat production. ? Multispectral image data can be used to detect stress in wheat fields. ? Stress in wheat fields may be a mixture of several stress causing factors. ? Spatial pattern metrics from multispectral imagery can be used to quantify stress. ? A discriminant function analysis can be used to differentiate stress induced by D. noxia from other stress causing factors. The objective of this study was to develop a method to differentiate two categories of stress to wheat fields, stress induced by the Russian wheat aphid, Diuraphis noxia (Mordvilko), and stress caused by other factors. The study used a set of spatial pattern metrics derived from multispectral imagery acquired with an MS3100-CIR digital camera. Thematic maps were generated from the subset of multispectral image of each wheat field. A discriminant function analysis was used to determine whether the set of spatial pattern metrics derived from thematic maps could differentiate the categories of stress. The study concluded that it was possible to use class-based spatial pattern metrics to differentiate stress induced by D. noxia from other stress factors. |
| Databáze: | OpenAIRE |
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