Upcoming Event

2019 Summer Turf Field Day

Lewis Brown Horticulture Farm

Corvallis, OR

33329 Peoria Rd.

Corvallis, OR 97333

Thursday  – August 29, 2019

Research Publications

Rolling and Biological Control Products Affect Microdochium Patch Severity on an Annual Bluegrass Putting Green

Evaluation of fungicides, phosphites, and nutrients for the control of Anthracnose on annual bluegrass in western Oregon, 2018

Evaluation of fungicide programs for the control of Anthracnose on annual bluegrass in western Oregon, 2018

Winter Foot Traffic on an Annual Bluegrass Putting Green in Western Oregon

Effects of Fungicides on Leaf Spot in Western Oregon, 2016.

Effect of fungicides applied at reduced rates on Microdochium patch in western Oregon, 2017.

Evaluation of winter fertility practices in combination with simulated traffic in order to determine their effects on the suppression of Microdochium patchand turfgrass recovery on annual bluegrass in western Oregon, 2013-2014

Evaluation of fungicide alternatives or the control of Microdochium patch on annual bluegrass in western Oregon, 2013-2014

Evaluation of fungicides for preventative control of gray snow mold in central Oregon, 2010–2011

Evaluation of fungicide programs for the control of anthracnose on annual bluegrass in western Oregon, 2015

Evaluation of fungicides for preventative control of Microdochium patch on annual bluegrass in western Oregon, 2016

Publications

Introduction

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

Materials and Methods

The trial was initiated on June 26th on an annual bluegrass putting green located at Emerald Valley Golf Club in Cresswell, Oregon. Subsequent fungicide applications were applied every 3 weeks on July 18th, August 8th, August 29th, and September 19th.

January 1, 2008

Identifying lawn grasses requires a basic knowledge of plant structure and the ability to distinguish between those structures to categorize specific grasses. To get really good at identifying turfgrasses you have to learn the characteristics of the common grasses.

*The following is a slideshare presentation.  Click the left or right arrows to navigate through the presentation, or click "full" to view the presentation in full-screen.

February 28, 2008

Preliminary Report
02/28/2008

Purpose

The purpose of this trial is to evaluate one and two applications of various herbicides for the control of English Daisy (Bellis perennis) growing in lawns.

Materials & Methods

February 1, 2008

This is an unusual insect in that it causes most of its damage in late winter and early spring as larvae feeding on all parts of the plant. While we think of it as a turfgrass pest it is also active on many ornamental perennials. The historical pattern for this insect is to move quietly into an area where it may develop to very high populations within a year or two.

*The following is a slideshare presentation.  Click the left or right arrows to navigate through the presentation, or click "full" to view the presentation in full-screen.

February 7, 2008

Final Report - February 7, 2008

Introduction

The purpose of this trial was to evaluate different timing intervals of fungicide applications necessary to control anthracnose (Colletotrichum cereale) on annual bluegrass fairways. Three products were evaluated combined with and without Daconil Ultrex: Cleary’s 3336, Cleary’s 3336 Plus, and Banner Maxx.

February 1, 2008

Revised Feb. 2008

In nature, annual bluegrass, Poa annua L. behaves as a true annual. It germinates in fall or spring when moisture is adequate and develops quickly, often flowering six to eight weeks after germination. In the Pacific Northwest we see it most commonly as a winter annual (Fig 1). After flowering and setting seed these annual types die typically from drought and leave dormant viable seed behind to germinate when moisture again becomes available. This efficiency in seed production makes annual bluegrass a major component of the seed bank of cultivated soils.

June 9, 2009

NTA Final Report June 9, 2009

Purpose

By using balanced NPK + micros applied at a low rate (3.25 lbs N/1,000 sq ft/yr) or a high rate (6.5 lbs N/1,000 sq ft/yr), we are trying to determine if total annual NPK with or without added calcium, sulfur, or humates has any measurable impact on putting green turf quality, Microdochium patch disease, anthracnose disease, and/or turf species composition.

January 1, 2008

Turf adaptation implies that commonly planted grasses have specific climatic conditions in which they thrive. Therefore, if we know the climate we should be able to predict what grasses will have a reasonable chance to prosper. The converse is also true. If we plant grasses in climates where they are not adapted, we can expect to have problems growing a healthy lawn. One way to depict turf adaptation is through maps.

February 1, 2008

Introduction:

For as long as golf has been played in the Pacific Northwest creeping bentgrass has been planted on putting greens, first as a component of South German mixed bentgrass, and later as seeded or stolonized varieties. In recent years, intense breeding and selection work has resulted in a flood of new cultivars with widely varying characteristics and generally much improved surface quality. While early creeping bentgrasses quickly gave way to annual bluegrass, newer cultivars are much more competitive and may prove to be much more persistent.

June 29, 2009

Final Report, June 29, 2009

Objective

The primary objective of this trial was to determine whether repeated applications (2, 3, or 4) of Proxy (ethephon) or Proxy + Primo (trinexpac-ethyl) caused phytotoxicity to ‘Providence’ creeping bentgrass maintained at putting green height. A secondary objective was to evaluate turf quality of putting green turf treated with Proxy, Proxy + Primo, or Trimmit (paclobutrazol) growth regulators.

Materials and Methods

October 30, 2007

Evaluation of different products in the management of Anthracnose.  The trial site was the Emerald Valley Golf Club, Cresswell, OR.  The site has a history of severe Anthracnose.  Many thanks to Scott Larsen for letting us use his practice green.

*The following is a slideshare presentation.  Click the left or right arrows to navigate through the presentation, or click "full" to view the presentation in full-screen.

Lolium arundinaceum (Schreb.) Darbysh.
(Formerly Festuca arundinacea Schreb.

Introduction:

Tall fescue is probably the most widely planted cool season grass in the world. This guide will cover botany, history, cultural requirements, and strengths and weaknesses of this fascinating grass.

Botanical Characteristics and Identification:

October 30, 2007

Putting greens in Oregon range from 80% to almost 100 % annual bluegrass.  The reality of golf course maintenance in the Pacfic North West is that annual bluegrass will eventually dominate turf on tees, greens, and fairways.

*The following is a slideshare presentation.  Click the left or right arrows to navigate through the presentation, or click "full" to view the presentation in full-screen.

Lolium perenne L.

Introduction:

Festuca sp.

Introduction:

The fine fescues are composed of several different Festuca species and subspecies. All are fine textured compared to most other commonly planted turfgrasses. Fine fescues have long been used in mixtures with other grasses and are generally considered the standard for shade tolerance in cool season grasses. In recent years, the fine fescues have received attention as low input environmentally sustainable grasses. Most retail lawn mixtures contain at least some fine fescue.

Botanical Characteristics:

(Agrostis sp.)

Introduction:

Note:

The information presented below is in the form of a progress report and all data are considered preliminary.

Purpose:

Using balanced NPK + micros applied at a low rate (3.25 lbs N/1000 sq ft/ yr) or a high rate (6.5 lbs N/1000 sq ft/yr), we are trying to determine if total annual NPK with or without added Ca, S, or humates has any measurable impact on turf quality, Microdochium patch disease, Anthracnose disease, and/or turf species composition.

Methods:

Introduction:

Previous work reported by Crystal Fricker at Pure Seed Testing Inc. demonstrated that it is possible to develop tall fescues and fine fescues that have relatively good tolerance to low rates of glyphosate. This trial is part of an ongoing effort to evaluate tolerance of tall fescues and other grasses to glyphosate at rates that are effective in controlling annual bluegrass.

Shade Trial – Area 4
Seeded Spring 2003

Introduction:

This publication examines the cultural, mechanical and chemical control of moss in lawns.

December 1, 1998

Explains the basics of germination, purity, seed tags, seeds per pound, blends, mixtures, and overseeding. Provides seeding and overseeding recommendations for putting greens, tees, fairways, sports fields, home lawns, cemeteries, roadsides, and slope stabilization for Idaho, and western and eastern Oregon and Washington. Describes the characteristics and uses of new cultivars of turftype tall fescues and provides average number of seeds per pound for common turfgrasses. Intended for homeowners, seed companies, sales people, and turfgrass managers.

August 13, 2009

Preliminary Report

Objective

The primary objective of this trial is to determine whether repeated applications (2, 3, or 4) of Proxy (ethephon) or Proxy + Primo (trinexpac-ethyl) causes phytotoxicity to Providence creeping bentgrass maintained at putting green height. A secondary objective is to evaluate turf quality of putting green turf treated with Proxy, Proxy + Primo, or Trimmit (paclobutrazol) growth regulators. The Trimmit was applied at two rates alone and with additional fertilizer.

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