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Economic Evaluation of Scotch Thistle Suppression

Published online by Cambridge University Press:  12 June 2017

Jack F. Hooper ,
James A. Young  and
Raymond A. Evans
Jack F. Hooper
Affiliation:
Armendaris Land Development Corporation, Kansas City, Missouri, and Resource Economist, College of Natural Resources, Utah State University, Logan, Utah
James A. Young
Affiliation:
Range Scientists, Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Reno, Nevada
Raymond A. Evans
Affiliation:
Range Scientists, Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Reno, Nevada
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Abstract

Economic evaluation of Scotch thistle (Onopordium acanthium L.) infestation of grazing land in northeastern California revealed potential annual losses to ranchers approximated $10.20/A for wet meadows, $6.70/A for wheatgrass (Agropyron spp.) stands, and $3.40/A on downy brome (Bromus tectorum L.) rangelands. Annual application of 0.06 lb/A of 4-amino-3,5,6-trichloropicolinic acid (picloram) provided the most economical ($3.57/A) means of suppressing Scotch thistle. Annual application of 0.06 lb/A also introduced less picloram into the environment than less frequent application of higher rates. Application of picloram to suppress Scotch thistle limits management options and reduces potential land values.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 5 , September 1970 , pp. 583 - 586
Copyright
Copyright © Weed Science Society of America 

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References

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