Integrated Pest Management and Biological Control of Weeds

Faculty:

Gary L. Piper
Associate Professor and Extension Specialist
Department of Entomology
P. O. Box 646382
Washington State University
Pullman, WA 99164-6382
(509) 335-1947
FAX 335-1009
E-mail:
glpiper@wsu.edu

Specialization and Areas of Particular Interest:

My primary research interest lies in the implementation of integrated management or biological control programs for noxious weeds of agricultural, wildland, and aquatic ecosystems. Other research interests involve the categorization of entomofaunas associated with weedy native plants, ecological and ethological investigations of theTephritidae, and beneficial arthropod host selection behavior studies.

Courses Taught:

Title	Credit
Introduction to Pest Management in a Quality Environment	2
Pesticides and the Environment	2
Systems of Integrated Pest Management	3
Pest Management Internship	1-4
Applied Biological Control: Weeds	1
Noncropland Weed Biological	1-3
Control Internship

Recent Publications:

1. Rosenthal, S. S., E. M. Coombs, B. Haglan, M. G. Mayer and G. L. Piper. 1993. Use of critical nontarget plants by the Russian knapweed nematode, (Subanguina picridis). Weed Tech. 7: 759-62.
2. Arrol, S. G., C. E. Grue, C. J. Perry and G. L. Piper. 1994. Potential impacts of purple loosestrife and its control on wetlands in Washington State: An evaluation of research needs. Lake Reserv. Manage. 9: 133-36.
3. Turner, C. E., R. Sobhian, D. B. Joley, E. M. Coombs and G. L. Piper. 1994. Establishment of Urophora sirunaseva (Diptera: Tephritidae) for biological control of yellow starthistle in the western United States. Pan-Pac. Entomol. 70: 206-11.
4. Piper, G. L. and L. A. Andres. 1995. Canada thistle, Cirsium arvense (L.) Scop., Chapt. 63, pp. 233-36. In J. R. Nechols, L. A. Andres, J. W. Beardsley, R. D. Goeden and C. G. Jackson (eds.), Biological Control in the Western U. S.: Accomplishments and Benefits of Regional Research Project W-84 (1964-1989). Univ. Calif. Div. Agric. Nat. Res. Publ. 3361. Oakland, CA.
5. Piper, G. L. and L. A. Andres. 1995. Rush skeletonweed, Chondrilla juncea (L.),Chapt. 68, pp. 252-55. In J. R. Nechols, L. A. Andres, J. W. Beardsley, R. D. Goeden and C. G. Jackson (eds.), Biological Control in the Western U. S.: Accomplishments and Benefits of Regional Research Project W-84 (1964-1989). Univ. Calif. Div. Agric. Nat. Res. Publ. 3361. Oakland, CA.
6. Piper, G. L. and S. S. Rosenthal. 1995. Diffuse knapweed, Centaurea diffusa Lam., Chapt. 64, pp. 237-41. In J. R. Nechols, L. A. Andres, J. W. Beardsley, R. D. Goeden and C. G. Jackson (eds.), Biological Control in the Western U. S.: Accomplishments and Benefits of Regional Research Project W-84 (1964-1989). Univ. Calif. Div. Agric. Nat. Res. Publ. 3361. Oakland, CA.
7. Rosenthal, S. S. and G. L. Piper. 1995. Bull thistle, Cirsium vulgare (Savi) Ten., Goeden and C. G. Jackson (eds.), Biological Control in the Western U. S.: Accomplishments and Benefits of Regional Research Project W-84 (1964-1989). Univ. Calif. Div. Agric. Nat. Res. Publ. 3361. Oakland, CA.
8. Rosenthal, S. S. and G. L. Piper. 1995. Russian knapweed, Centaurea (Acroptilon) repens L., Chapt. 69, pp. 256-57. In J. R. Nechols, L. A. Andres, J. W. Beardsley, R. D. Goeden and C. G. Jackson (eds.), Biological Control in the Western U. S.: Accomplishments and Benefits of Regional Research Project W-84 (1964-1989). Univ. Calif. Div. Agric. Nat. Res. Publ. 3361. Oakland, CA.
9. Spollen, K. M. and G. L. Piper. 1995. Effectiveness of the gall mite, Eriophyes chondrillae, as a biological control agent of rush skeletonweed (Chondrilla juncea)seedlings, pp. 375-79. In E. S. Delfosse and R. R. Scott (eds.), Proc. VIII Int. Symp.Biol. Contr. Weeds, 2-7 February 1992, Lincoln Univ., Canterbury, New Zealand.DSIR/CSIRO, Melbourne.
10. Lang, R. F., J. M. Story and G. L. Piper. 1996. Establishment of Larinus minutusGyllenhal (Coleoptera: Curculionidae) for biological control of diffuse and spottedknapweed in the western United States. Pan-Pac. Entomol. 72: 209-12.
11. Turner, C. E., G. L. Piper and E. M. Coombs. 1996. Chaetorellia australis (Diptera: Tephritidae) for biological control of yellow starthistle in the Western United States: establishment and seed destruction. Bull. Entomol. Res. 86: 177-82.
12. Rees, N. E., P. C. Quimby, G. L. Piper, E. M. Coombs, C. E. Turner, N. R. Spencerand L. V. Knutson. 1996. Biological Control of Weeds in the West. WesternSociety of Weed Science, Helena, MT. 342 p.
13. McCaffrey, J. P., G. L. Piper, R. H. Callihan and E. M. Coombs. 1996. Collectionand redistribution of biological control agents of rush skeletonweed. Univ. IdahoCoop. Ext. Bull. 782: 8 p.
14. Piper, G. L. 1996. Biological control of the wetlands weed purple loosestrife (Lythrum salicaria) in the Pacific Northwestern United States. Hydrobiologia(in press).

Grants and other research support:

During the last five years, eighteen research grants have been funded for a total of nearly $202,000. The Washington State Department of Agriculture, Washington State Department of Fish & Wildlife, Washington State Department of Transportation, U. S. Fish & Wildlife Service, and U.S. Bureau of Reclamation are but a few of the agencies which have supported biological control of weeds research activities.

Recent presentations:

• H. L. Norambuena and G. L. Piper. Impact of Apion ulicis (Coleoptera: Apionidae) on gorse, Ulex europaeus (Fabaceae), in agricultural habitats in Chile. IX International Symposium on Biological Control of Weeds, 21-26 January 1996, Capetown, South Africa.
• G. L. Piper. Biological control of the wetlands weed purple loosestrife (Lythrum salicaria) in the Pacific Northwestern United States. Ninth International Symposium on Aquatic Weeds, 12-16 September 1994. Dublin, Ireland.
• G. L. Piper. Purple loosestrife biocontrol in Washington: an update. U. S. Fish and Wildlife Service Purple Loosestrife Workshop. March 1994. Ithaca, NY.
• G. L. Piper. Potential impacts of purple loosestrife and its control in wetlands in Washington State: an evaluation of research needs. Western Aquatic Plant