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Differentiation of turfgrass and common weed species using hyperspectral radiometry

Published online by Cambridge University Press:  20 January 2017

Kendall C. Hutto ,
David R. Shaw ,
John D. Byrd Jr.  and
Roger L. King
David R. Shaw
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
John D. Byrd Jr.
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
Roger L. King
Affiliation:
Department of Electrical and Computer Engineering, Mississippi State University, Mississippi State, MS 39762
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Abstract

Hand-held hyperspectral reflectance data were collected in the summers of 2002, 2003, and 2004 to differentiate unique spectral characteristics of common turfgrass and weed species. Turfgrass species evaluated were: bermudagrass, ‘Tifway 419’; zoysiagrass, ‘Meyer’; St. Augustinegrass, ‘Raleigh’; common centipedegrass; and creeping bentgrass, ‘Crenshaw’. Weed species evaluated were: dallisgrass, southern crabgrass, eclipta, and Virginia buttonweed. Reflectance data were collected from greenhouse and field locations. An overall classification accuracy of 85% was achieved for all species in the field. A total of 21 spectral bands between 378 and 1,000 nm that were consistent over the three data collection periods were used for analysis. Only centipedegrass, zoysiagrass, and dallisgrass were correctly classified less than 80% of the time. An overall classification accuracy of 69% was achieved for the greenhouse species. Spectral bands used in this analysis ranged from 353 to 799 nm. Creeping bentgrass and Virginia buttonweed were classified correctly at 96 and 92%, respectively.

Keywords

Eclipta, Eclipta prostrata L. ECLALVirginia buttonweed, Diodia virginiana L. DIQVIdallisgrass, Paspalum dilatatum Poir. PASDIsouthern crabgrass, Digitaria ciliaris (Retz.) Koel. DIGSPbermudagrass, Cynodon dactylon (L.) Pers. × Cynodon transvaalensis Burtt-Davy, ‘Tifway 419’zoysiagrass, Zoysia japonica Steud., ‘Meyer’St. Augustinegrass, Stenotaphrum secundatum (Walt.) Kuntze, ‘Raleigh’common centipedegrass, Eremochloa ophiuroides (Munro) Hackcreeping bentgrass, Agrostis stolonifera L., ‘Crenshaw’Remote sensingturfgrassweed identification
Type
Weed Management
Information
Weed Science , Volume 54 , Issue 2 , April 2006 , pp. 335 - 339
Copyright
Copyright © Weed Science Society of America 

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References

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