California Agriculture
California Agriculture
California Agriculture
University of California
California Agriculture

Archive

Imported seed weevils attack initalian and milk thistles in southern California

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

R. D. Goeden
D. W. Ricker

Publication Information

California Agriculture 28(1):8-9.

Published January 01, 1974

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Abstract Not Available – First paragraph follows: ITALIAN THISTLE, Carduus pycnocephalus. L., and milk thistle, Silybum marianum (L.) Gaertn., alien weeds of Eurasian origin, have been studied since 1966 as targets of biological control in southern California. Found mainly in the coastal counties, these thistles are common weeds on grazing and pasture lands, open woodlands, fallow cropland, and wastelands such as roadsides, railroad rights-of-way, field margins, and ditch-banks. Field surveys from 1966 to 1971 established that both weeds were relatively free of deleterious insect injury. Most insects found associated with these weeds were sap- or foliage-feeding species which apparently had little influence on the vigor and reproductive capacity of these thistles in southern California.

Full text

Full text is available in PDF.

Imported seed weevils attack initalian and milk thistles in southern California

R. D. Goeden, D. W. Ricker
Webmaster Email: wsuckow@ucanr.edu

Imported seed weevils attack initalian and milk thistles in southern California

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

R. D. Goeden
D. W. Ricker

Publication Information

California Agriculture 28(1):8-9.

Published January 01, 1974

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Abstract Not Available – First paragraph follows: ITALIAN THISTLE, Carduus pycnocephalus. L., and milk thistle, Silybum marianum (L.) Gaertn., alien weeds of Eurasian origin, have been studied since 1966 as targets of biological control in southern California. Found mainly in the coastal counties, these thistles are common weeds on grazing and pasture lands, open woodlands, fallow cropland, and wastelands such as roadsides, railroad rights-of-way, field margins, and ditch-banks. Field surveys from 1966 to 1971 established that both weeds were relatively free of deleterious insect injury. Most insects found associated with these weeds were sap- or foliage-feeding species which apparently had little influence on the vigor and reproductive capacity of these thistles in southern California.

Full text

Full text is available in PDF.

University of California, 2801 Second Street, Room 184, Davis, CA, 95618
Email: calag@ucanr.edu | Phone: (530) 750-1223 | Fax: (510) 665-3427
Website: http://calag.ucanr.edu