Management of Microdochium Patch in the PNW

Ten years of research into microdochium patch disease.

Comparing Different Fungicides for the Control of Microdochium Patch

The purpose of this trial was to evaluate the effectiveness of various fungicides in controlling Microdochium patch on a bluegrass green.

2012 Evaluation of Fungicides and Fungicide Rotation Programs for the Control of Anthracnose

The purpose of this trial was to evaluate the effectiveness of various fungicides and fungicide rotations in controlling anthracnose (Colletotrichum cereale) and maintaining plot quality on an annual bluegrass (Poa annua) putting green.

2012 Evaluation of Syngenta Fungicides and Fungicide Rotation Programs for the Control of Anthracnose

The purpose of this trial was to evaluate the effectiveness of various fungicides and fungicide rotations in controlling anthracnose (Colletotrichum cereale) and maintaining plot quality on an annual bluegrass (Poa annua) putting green.

Fertility and its Relationship to Turfgrass Diseases

Fertilizer

The importance of the relationship between fertility, turfgrass, and turfgrass diseases is discussed. The author focuses on turfgrass diseases common to the Pacific Northwest and offers recommendations for fertilizer practices to help combat the diseases.

2010 Evaluation of Fungicides for the Control of Dollar Spot on a Colonial Bentgrass/Annual Bluegrass Fairway

Introduction

The purpose of this trial was to evaluate the effectiveness of repeated applications of various formulations of chlorothalanil at two rates, Tourney 50, and two fungicide rotations in controlling dollar spot (Sclerotinia homoeocarpa) on a colonial bentgrass (‘Bardot’)/annual bluegrass fairway.

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.

2010 Anthracnose Trial

Oregon State's 2010 research trial evaluating the effectiveness of various fungicides to control anthracnose on an annual bluegrass putting green has recently been published and made available on BeaverTurf! Please click here to see the publication.

2010 Evaluation of Fungicides for the Control of Anthracnose on an Annual Bluegrass Putting Green

Picture: Reserve 3.2 oz/1,000 sq. ft. 7/14/10
Picture: Renown – 2 apps applied at 2.5 fl oz/1,000 sq. ft. (7/14/10)
Picture: Fosetyl-Al + Chlorothalanil + Foursome – 2 apps applied at 4.0 + 3.2 +0
Picture: Tourney applied twice at 0.37 oz/1,000 sq. ft.
Picture: Torque 0.6 oz/1,000 sq. ft. (7/28/10)
Picture: Concert after 3 apps @ 5.5 oz/1,000 sq. ft. (7/28/10)
Picture: Reserve after 3 apps @ 3.2 oz/1,000 sq. ft. (7/28/10)
Picture: Trinity after 3 apps @ 1.0 oz/1,000 sq. ft. (7/28/10)
Picture: Untreated (7/28/10)
Picture: Honor + Revolution after 3 apps @ 1.1 + 6.0 oz/1,000 sq. ft. (7/28/10)
Picture: Torque alternated with Affirm + Spectro 90 0.60/0.9+3.0 oz/1,000 sq. ft

Introduction

The purpose of this trial was to evaluate the effectiveness of various fungicides and fungicide rotations in controlling anthracnose (Colletotrichum cereale) on an annual bluegrass putting green.

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!

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