Seed weevil released to control milk thistle
R. B. Hawkes, University of California
L. A. Andres, University of California
P. H. Dunn, Research Entomologist
California Agriculture 26(12):14-14. DOI: 10.3733/ca.v026n12p14.
R. B. Hawkes, University of California, Berkeley; L. A. Andres are Research Entomologists, U. S. Department of Agriculture, Agricultural Research Service, Albany, California, and Associates in the Agricultural Experiment Station, University of California, Berkeley. P. H. Dunn is Research Entomologist, USDA, ARS, Rome, Italy.
Abstract Not Available – First paragraph follows:
Milk thistle, Silybum marianum (L.) Gaertn., is a widespread weed of increasing importance on range-land, ditch banks, highway and railroad right-of-ways, and wasteland in California. Although reported to be a biennial, it grows mainly as a winter annual, generally invading disturbed and overgrazed land. The plant reproduces only by seed.