Using the Pre-Sidedressing Soil Nitrate (PSNT) ‘Quick Test’ to Guide N Fertilizer Management in Sweet Corn (2013)

The following is a method for cheaply and quickly determining a soil’s nitrate status for the purpose of determining the midseason sidedress fertilizer rate for sweet corn. For information on the pre-sidedress nitrate test (PSNT), see OSU’s nutrient management guide EM 9010-E (Sweet Corn- Western Oregon). The ‘Quick Test’ (QT) has been in use for years in the Salinas Valley of California with good results. Compared to a traditional laboratory test, it is cheaper and test results can be obtained within hours of sample collection. Although this method is semi-quantitative, results from the QT are well correlated with laboratory results.

White Mold of Snap Bean and Other Vegetable Crops

White mold is a serious foliar and pod disease of snap beans grown for processing in western Oregon as well as in all major snap bean production regions in the US. White mold has a wide host range as it is a pathogen on more than 400 plant species.

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.

Marion County Master Gardeners Experiment with Grafted Tomatoes

The Marion County Master Gardeners planted grafted and non-grafted tomatoes in their demonstration garden, and compared growth and yield.

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 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!

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

Golf Economic Impact

Oregon's Golf Economy Estimated at $1.2 Billion; Contributes More than 27,000 Jobs

Representing the Golf Alliance of Oregon (GAO), Barb Trammell, CEO of the Oregon Golf Association unveiled the results of an economic impact study at Stone Creek Golf Club in Oregon City in mid-October 2010. The research study was conducted on behalf of the Golf Alliance of Oregon, a consortium of the major trade and consumer golf associations.

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