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Turfgrasses and Lawn Care in Eastern Oregon

Today, turfgrass is the single largest irrigated crop in the United States and covers three times the land area of any other cultivated crop. An estimated 40.5 million acres of grasses are planted in residential, commercial and institutional lawns, golf courses, and athletic fields. Learn more about the structure and establishment of turfgrass and how to address weeds, diseases, and insects.

Richard Smiley | Jan 2018 | Article

Symphylans have invaded my garden, how can I get rid of them?

Q: How do i get rid of symphylans? I have turned the dirt numerous times and treated with Bifenthrin as was directed by a soil expert at a local greenhouse ( 3 days ago) and they're still alive and well. Help!!! I am trying to get some of my cold crop starts in the ground, but want to get rid of these bugs first.

A: View answer | View all featured questions

Why Does Your Tree Look Sick?

Most “sick tree” problems can be traced back to underlying stresses that have reduced the tree's vigor, making it more vulnerable to diseases or insect pests.

Jun 2018 | Article

How to collect a plant specimen for disease diagnosis

A guide for how to collect and where to get a sample analyzed for plant diseases.

Melodie Putnam, Carol Savonen | Jul 2014 | Article

Grapevine Trunk Diseases in Oregon

A summary of the main trunk diseases causing issues in Oregon and management methods.

Melodie Putnam | Mar 2019 | Article

Insecticide Screening for Effectiveness in Controlling Thrips in Dry Bulb Onions

Controlling thrips (onion and western flower) is becoming increasingly difficult for commercial onion growers in the Treasure Valley. One of the problems is resistance to some of the commonly used insecticides. The objective of this trial was to screen registered and non-registered insecticides to find those which have potential for use in thrips control programs.

Lynn Jensen | Jul 2010 | Article