Livestock and Forage

ALERT:  True Armyworm infestation in Tall Fescue and Orchardgrass

There are many reports that the True Armyworm is damaging Tall Fescue and Orchardgrass seed fields.  You may want to check Tall Fescue and Orchardgrass pastures and hayfields at this time for any sign of damage or infestation.

Key characters:

1) Several alternating dark and light stripes along body

1-2 thicker yellow-orange bands running along each side of body from head to tail.

2) Look at the black triangles or marks on four abdominal prolegs

See the photo of the True Armyworm for a good description.

Important Information for Swine Owners!

PEDv in Oregon Informational Session

Video/slideshow of Information Session

OSU Diagnostic Lab test for PED virus

PED virus Vaccination

Presentation Handout


2003 Grass Hay Species and Variety Trial 2004–2007 Three-Cut Harvest Management Results  OSU Central Oregon Agricultural Research Center:  Madras


Grazing Cattle

Livestock, Forage and Pasture Management Extension Education for Yamhill, Polk, Marion, Multnomah, Washington and Clackamas Counties.


-see Animal Science link below

ALERT: Grasshopper Infestation

-see Pastures link below

ALERT: True Armyworm Infestation

-see Pastures link below

ALERT: Rust in Orchardgrass Hay Fields

-see the HAY link below

ALERT: Tansy Ragwort  Info

ALERT: PEDv in Oregon  - Informational Session

ALERT: The Winter Cutworm - details

Information on the following subjects is available to livestock and forage producers:

PUBLICATION:  Selenium Supplementation Strategies for Livestock in Oregon (EM9094)


Contact Information:

Gene Pirelli - Regional Extension Livestock and Forage Specialist

Polk County Extension Office
289 E Ellendale, Suite 301
Dallas, OR 97338
Monday - Friday, 8am-Noon and 1-5pm (closed noon-1pm)
Polk County Office Phone: 503-623-8395
Cell Phone:  503-931-5163 
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