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Detection of Yellow Hawkweed (Hieracium pratense) with High Resolution Multispectral Digital Imagery

Published online by Cambridge University Press:  12 June 2017

Hubert W. Carson ,
Lawrence W. Lass  and
Robert H. Callihan
Hubert W. Carson
Affiliation:
Dep. of Plant, Soil, and Entomol. Sci., Univ. of Idaho, Moscow, ID 83844-2339
Lawrence W. Lass
Affiliation:
Dep. of Plant, Soil, and Entomol. Sci., Univ. of Idaho, Moscow, ID 83844-2339
Robert H. Callihan
Affiliation:
Dep. of Plant, Soil, and Entomol. Sci., Univ. of Idaho, Moscow, ID 83844-2339
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Abstract

Yellow hawkweed infests permanent upland pastures and forest meadows in northern Idaho. Conventional surveys to determine infestations of this weed are not practical. A charge coupled device with spectral filters mounted in an airplane was used to obtain digital images (1 m resolution) of flowering yellow hawkweed. Supervised classification of the digital images predicted more area infested by yellow hawkweed than did unsupervised classification. Where yellow hawkweed was the dominant ground cover species, infestations were detectable with high accuracy from digital images. Moderate yellow hawkweed infestation detection was unreliable, and areas having less than 20% yellow hawkweed cover were not detected.

Keywords

Yellow hawkweed, Hieracium pratense Tausch # HIECAAirborne charge coupled devicesremote sensingweed detection
Type
Research
Information
Weed Technology , Volume 9 , Issue 3 , September 1995 , pp. 477 - 483
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

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