Consider yourself very lucky if you have not had to deal with mayweed chamomile, a.k.a., dog fennel, in your wheat or pulse crops! Mayweed chamomile is a troublesome weed in small grain and pulse crops throughout the high rainfall zones of the Inland Pacific Northwest. It is an annual that can germinate in the fall or spring and that reproduces only by seed. Individual plants can produce as many as 17,000 seeds, and seed remain viable in the soil for many years. Preventing seed production is the key to managing mayweed chamomile! While herbicides are an effective tool for mayweed chamomile control, herbicide-resistant biotypes are an increasing concern. The new Extension publication PNW695 ‘Integrated Management of Mayweed Chamomile in Wheat and Pulse Crop Production Systems’
is now available on the Wheat and Small Grains website
. This publication will help growers and crop consultants develop an integrated program for the management of this prolific weed in wheat and pulse crop production.