Oregon State University

Palmer Amaranth Has Impact on Reports of Analysis

On Monday, December 19, 2016, we received direction from SCST and AOSA on how to report Amaranthus sp. on Reports of Analysis (http://www.analyzeseeds.com/palmer-amaranth/).  If we cannot make a positive identification to the species level, all pigweeds must be identified as Amaranthus sp.  On All-state Noxious Weed Exams it will also have to be listed as noxious.

This will have an impact on how seed lots are labeled and where they may be shipped.

We have reached out to Oregon Dept. of Agriculture for a statement on whether Palmer Amaranth has been officially identified in the State.  If it has not been identified, we are hopeful that the area may be declared “Palmer-free” so that Oregon-produced seed can move without hindrance to all of our customers.

We are also working on morphological markers to help facilitate differentiation of Palmer Amaranth from other Amaranthus sp.

In the meanwhile, the situation will be treated similar to Brassica sp. contaminants.


Contact Info

The OSU Seed Laboratory is an AOSA and ISTA member lab and is ISTA Accredited Laboratory US07.

3291 SW Campus Way
Corvallis, OR 97331
Phone: 541-737-4464
Fax: 541-737-2126

Hours: 8-5 Mon - Fri
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