Management of Microdochium Patch in the PNW

Ten years of research into microdochium patch disease.

Strategies for Turfgrass Renovation

Management

Practical strategies for the renovation of turfgrass, used to improve existing turf or change grass species for improved performance. The basic strategies discussed include simple overseeding, overseeding following suppression of existing turf, and complete renovation.

Winter Brown Blight Rears Its Ugly Head

The photos on this page, taken at Lewis-Brown Horticulture Farm in Corvallis, Oregon, show the symptoms of Winter Brown Blight (Drechslera siccans) on perennial ryegrass. Winter Brown Blight is a member of the genera Drechslera and includes Net Blotch (Drechslera dictyoides) and Melting Out (Drechslera poae). This disease used to be classified as Helminthosporium.

Sustainable Landscape Management

Tom Cook, retired OSU turfgrass professor, has published a new book detailing the construction and maintenance of sustainable landscapes! The book includes topics such as sustainable landscape design, how to develop an ecosystem, issues regarding the use of chemicals, and approaches for modifying existing lancescapes.  The book can be purchased from Amazon: Sustainable Landscape Management: Design, Construction, and Maintainence!

Turfgrass Seeding Recommendations for the Pacific Northwest

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A PACIFIC NORTHWEST EXTENSION PUBLICATION • PNW299

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Washington State University • Oregon State University • University of Idaho

Efficient Lawn Irrigation in the Intermountain West

Figure 1. This healthy lawn is a result of proper cultural practices, which incl
Figure 2. Thatch is a partially decomposed organic layer that develops between t
Figure 4. Catch cans can be used to evaluate the water delivery rate of a sprink
Figure 5. Automatic irrigation systems can be used to apply water efficiently an
Figure 7. A dormant turfgrass stand (below) and an irrigated home lawn (above).
Figure 3. A tall fescue home lawn may require less water than other turfgrass sp
Figure 6. Tree roots have a much higher water requirement than home lawns.

Introduction

Maintaining a healthy, aesthetically pleasing lawn depends on many variables including turfgrass species; mowing height and frequency; fertilization; and insect, disease, and weed control. Proper irrigation, despite being one of the most important factors in maintaining a healthy lawn, is the most often overlooked variable in lawn care (figure 1).

2008 Perennial Ryegrass and Annual Bluegrass Tolerance to Citrus Oil, Worry Free Moss & Algae Control, Garden Safe Moss and Algae Killer, and Lilly Miller Moss-Out Applications to Control Moss in Lawns

Oregon State University;

Dr. Robert Golembiewski, Assistant Professor;
Tom Cook, Associate Professor;
Brian McDonald, Research Assistant;

Final Report;

May 21, 2008 (updated 9/8/10)

2008 Evaluation of Roundup Formulations for Control of Cool Season Turfgrass Species

Oregon State University;

Dr. Robert Golembiewski, Assistant Professor;
Tom Cook, Associate Professor;
Brian McDonald, Research Assistant;

Final Report;

January 12, 2009 (Updated 9/8/10)

2008 Evaluation of Efficacy of Citrus Oil, Worry Free Moss and Algae Control, Garden Safe Moss and Algae Killer, and Lilly Miller Moss-Out Applications to Control Lawn Moss

Oregon State University;

Dr. Robert Golembiewski, Assistant Professor;
Tom Cook, Associate Professor;
Brian McDonald, Research Assistant;

Final Report;

July 31, 2008 (Updated 9/8/10)

2008 Evaluation of Efficacy of Citrus Oil, Worry Free Moss and Algae Control, Garden Safe Moss and Algae Killer, and Lilly Miller Moss-Out Applications to Control Lawn Moss

Oregon State University;

Dr. Robert Golembiewski, Assistant Professor;
Tom Cook, Associate Professor;
Brian McDonald, Research Assistant;

Final Report;

May 27, 2008 (updated 9/8/10)

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