Turf - Publications and Resources

Turf Presentations

Nov 2021

Performance of Kurapia Under Drip Irrigation

Presentation (PDF, 11MB)

Authors: Worku Burayu, Kai Umeda

Location Presented: 2021 ASA, CSSA, SSSA INTERNATIONAL ANNUAL MEETING Salt Lake City, UT
Jun 2019

Selection of appropriate preemergence and postemergence herbicides for strategic weed control in turf

Presentation (PDF, 8.8MB)

Authors: Kai Umeda

Location Presented: Guam
Jun 2019

Herbicide Application Techniques and Sprayer Calibrations Part 2

Presentation (PDF, 5.35MB)

Authors: Kai Umeda

Location Presented: Guam
Apr 2019

Alternative Methods of Weed Control

Presentation (PDF, 10.7MB)

Authors: Kai Umeda
Oct 2016

Native Grasses and Groundcovers for the Arid Southwest

Presentation (PDF, 6MB)

Location Presented: 57th Annual Meeting Western Region of North America – International Plant Propagators’ Society, Tempe, Arizona, USA
Apr 2015

Sports Turf Graduation

Presentation (PDF, 6.28MB)

Authors: David Kopec

Location Presented: Cardinal Stadium
Oct 2012

Herbicide Effects on Kurapia

Presentation (PDF, 5MB)

Authors: Jerry Che, Kai Umeda, Worku Burayu

Location Presented: University of Arizona
Jan 2010

Ultradwarf Bermudagrass Greens Winter Color Enhancement Study

Presentation (PDF, 2.92MB)

Authors: Kai Umeda Brian Whitlark

Location Presented: Maricopa, AZ
Oct 2009

Broad Spectrum Weed Conrol

Presentation (PDF 40.6MB)

Authors: Kai Umeda
Aug 2009

Soil and Water Amendments

Presentation (PDF, 6.26MB)

Authors: Jim Walworth

Location Presented: Salinity Management Workshop, The Foothills, Phoenix, AZ
Aug 2009

Understanding Salinity and Sodium Problems in Soils

Presentation (PDF, 13.8MB)

Authors: Dr. Jim Walworth

Location Presented: Salinity Management Workshop, The Foothills, Phoenix, AZ
Aug 2009

Origins of Salinity and Sodium Problems in Turf

Presentation (PDF, 4.6MB)

Authors: Paul W. Brown

Location Presented: Salinity Management Workshop, The Foothills, Phoenix, AZ
Jan 2009

Comparison of cultivation techniques to affect sodium levels in turfgrass soils

Presentation (PDF, 1.19MB)

Authors: Kai Umeda, Brian Whitlark
Jan 2009

Irrigation Management and Capping Soils

Presentation (PDF, 23.1MB)

Authors: Paul Brown
Jan 2008

Turfgrass Insect Pests IPM

Presentation (PDF, 1.73MB)

Authors: Kai Umeda and Gabriel Towers
Oct 2007

Weed Identification and Proper Herbicide Selection

Presentation (PDF, 5.64MB)

Authors: Kai Umeda
Apr 2007

Quality of reclaimed water for turfgrass irrigation

Presentation (PDF, 1.45MB)

Authors: Clinton Williams

Location Presented: USDA-ARS ALARC
Apr 2007

Products to Assist in Turfgrass Irrigation: Tools or Snake Oils?

Presentation (PDF, 3.10MB)

Authors: Bernd Leinauer

Location Presented: University of Arizona Maricopa Agricultural Center and U.S. Arid-Land Agricultural Research Center
Apr 2007

Leaching Requirement! What it is and what it ain’t.

Presentation (PDF, 754.47)

Authors: David M. Kopec

Location Presented: Maricopa Az.
Apr 2007

Effect of Reclaimed Water on Desert Soil

Presentation (PDF, 853KB)

Authors: Dr. Jim Walworth

Location Presented: Maricopa, AZ
Apr 2007

Irrigation with Effluent: Will Salinity Become a Problem?

Presentation (PDF, 792KB)

Authors: Paul Brown

Location Presented: Maricopa, AZ
Apr 2007

Comparison of Comparison of Cultivation Techniques

Presentation (PDF, 1.6MB)

Authors: Kai Umeda and Brian Whitlark

Location Presented: Maricopa, AZ
Jan 2006

Sprinkler Troubleshooting

Presentation (PDF, 582KB)

Authors: Jeff Gilbert
Aug 2005

Overseeding and Transition for Year Round Turfgrass

Presentation (PDF, 208KB)

Authors: Kai Umeda and David Kopec
Jan 2005

Calibrating Fertilizer Spreaders

Presentation (PDF, 185KB)

Authors: Kai Umeda and David Kopec
Jan 2005

Calibrating Boom Sprayers

Presentation (PDF, 119KB)

Authors: Kai Umeda and David Kopec
Aug 2004

Using Chemicals for Weed Control and Bermudagrass Suppression During Fall Overseeding

Presentation (PDF, 309KB)

Authors: Kai Umeda
Jan 2004

Monitoring, Preventing, and Controlling Weeds in Residential and Commercial Landscapes

Presentation (PDF, 2.63MB)

Authors: Kai Umeda
Jan 2004

Importance of Proper Weed Identification and Understanding of Growth Habits for Optimal Timing and Efficient use of Proper Herbicides in Turf

Presentation (PDF, 11.4MB)

Authors: Kai Umeda

Turf Publications

Mar 2018

Spring Preemergence Weed Control in Lawns

Publication (PDF, 597KB)

Authors: Dave Kopec and Kai Umeda

Featuring Spring Pre-emergency Weed Control in Lawns. Suggestions on how to treat for weeds in a proactively rather than a reactively.
Feb 2017

Selective Preemergence and Postemergence Control of Panic Liverseedgrass (Urochloa panicoides) in Desert Turf

Publication (PDF, 16.6MB)

Authors: Kai Umeda

Panic liverseedgrass is a relatively new problem weed occurring in turfgrass in the low desert region of Arizona. It is invasive and federally listed as a noxious weed. Herbicide use and efficacy information is limited to row crops or noncrop areas.
Jan 2017

Low-Input Nativegrasses and Alternative Groundcovers for the Southwest U.S.A.

Publication (PDF, 20.75MB)

Authors: Worku Burayu and Kai Umeda

A poster comparing the germination and surface coverage rate of different species of plants used for ground covering. Including: Kurapia, Plain lovegrass, Alkali Sacaton, Alkali muhly, Blue grama, Buffalograss, Big galleta, Sand dropseed, Spike dropseed.
Jan 2017

Overseeding Turf Reach 11 Sports Center, 2017

Publication (PDF, 8.53MB)

Authors: David M Kopec, J. Gilbert, K. Umeda

Listed are some conditions that are not good for the bermudagrass in the fall. Such as: agressice dethatching at overseeding, early overseeding, aggressive dethatching with an early overseed, Too late an overseed.
Mar 2016

A Winter Weed - - Still Here But Best Forgotten: Mediterraneangrass

Publication (PDF, 2.4MB)

Authors: David M. Kopec

Mediterraneangrass is a bunchgrass that produces vegatative shoots by tillering. It is relatively simple to remove mechanically due to it's shallow root system. It is not tolerant of hot temperatures and will die if exposed to temperatures over 85F for several days.
Oct 2015

Wait wait…it’s really too late! Late season control of summer annual grassy weeds in turf

Publication (PDF, 584KB)

Authors: David M. Kopec

If weeds establish themselves early in the spring, it may still appear as though nothing is wrong during the summer months. When fall comes around it may only then be then that the problem becomes noticeable.
Oct 2015

Overseeding Winter Grasses into Bermudagrass Turf

Publication (PDF, 339KB)

Authors: David Kopec and Kai Umeda

In the lower elevation desert of Arizona, the warm-season turfgrasses (bermudagrass, zoysiagrass, and St. Augustinegrass) become dormant and typically lose their green color during winter. Overseeding bermudagrass with a cool-season grass provides a yearlong green lawn. This article gives some suggestion on how to achieve that outcome.
Sep 2015

Mowing Turfgrasses in the Desert

Publication (PDF, 780KB)

Authors: David M. Kopec and Kai Umeda

The frequency and height that turfgrass needs to be mowed at is dependent on the variety of the turfgrass and the desired outcome. This article discusses some things to keep in mind when establishing your mowing routine.
Feb 2015

Going Green – If You’re Not Already. Nitrogen and Iron Deficiencies in Turfgrass

Publication (PDF, 409KB)

Authors: David M. Kopec

The yellowing of grass is not always a sign of a nitrogen deficiency, it could also be indicating an iron deficiency. This article discusses the different effects that these nutrients have upon plants and how to identify which deficiency is present.
Feb 2015

The History of the “Lawn” and Turfgrass Development

Publication (PDF, 170KB)

Authors: David Kopec

The history of the development of lawns is discussed in early history, the middle ages and post middle ages eras. Cultural management of these times is also discussed.
Feb 2015

Basic Pre-emergence weed control in lawns

Publication (PDF, 297KB)

This article covers some of the basic concepts of pre-emergence herbicides. The most common active ingredients are listed. Suggestions on application and use are given.
Jan 2015

Water Conservation for Turfgrass: An Historical Review of Research and Extension Contributions

Publication (PDF, 6.95MB)

Authors: D.M. Kopec, P.W. Brown, J.J. Gilbert, M. Pessarakli, S.E. Smith, and K. Umeda

This poster outlines some of the information surrounding the proper way to conserve water in turfgrass management. This is done by showing a historical outline of data and charts that have been made on the subject.
Dec 2014

Laboratory assay to evaluate fungicide efficacy for control of rapid blight of cool season turfgrass

Publication (PDF, 12.48MB)

Authors: Olsen, Mary W.

Rapid blight of turfgrass, caused by Labyrinthula terrestris, has become a chronic disease of cool season turfgrasses wherever turf is irrigated with elevated salinity irrigation water and/or in poorly leached soils with increased levels of sodium chloride. Control strategies include using alternative sources of irrigation water with less sodium chloride, leaching soils, using salt tolerant grasses and applying effective fungicides. Because of the widespread and sporadic occurrence of rapid blight, a quick and reliable laboratory assay was developed to test efficacy of chemical treatments. The laboratory assay gives results comparable to field trials in less than four weeks, greatly increasing our ability to determine the efficacy of chemical treatments in a timely and cost effective manner. The laboratory assay correlates highly to results in comparable field trials of selected chemicals, and is valuable for screening chemicals and turfgrass varieties before, or in place of, lengthy and costly field trials.
Oct 2014

Bed Bug Battle and Mosquito Management – October 2014

Publication (PDF, 1.63MB)

Featuring Mosquito IPM and Fall Landscape Checklist. Mosquitoes are considered to be the most harmful pest to human health. Tips on managing mosquitoes are given. A checklist of what to do to prepare plants for fall season.
Sep 2014

Fall Landscape Checklist and Fire Ants – September 2014

Publication (PDF, 1.8MB)

Featuring Fall Landscape Checklist, Fire Ant Stings, and Conenose Bug. A checklist of what to do to prepare plants for fall season. Warnings about Fire ants, treatment for their stings, as well as some suggestions to reduce risk.
Aug 2014

Healthy Turf for a Healthy Environment – August 2014

Publication (PDF, 2.06MB)

Featuring Information on Healthy Turf. Topics discussed include: What can you do to maintain a healthy lawn?, developing a lawn care program, and pest management. It gives you a good number of things to keep in mind with your turf.
Feb 2014

Converting Reference Evapotranspiration into Turf Water Use

Publication (PDF, 608KB)

Authors: Paul Brown and Dave Kopec

Accurate estimates of turf water use are required to effectively manage a turf irrigation system. This document describes the procedures used to adjust ETos for use on managed turf surfaces in Arizona.
Jan 2014

Effects of Herbicides on Bermudagrass Growth

Publication (PDF, 5.3MB)

Authors: Cassandra Santos and Kai Umeda

The type of herbicidal injuries inflicted upon bermudagrass by various herbicides is discussed. Some herbicides affected growth as much as four weeks after the initial application.
Jan 2014

Basics of Evaporation and Evapotranspiration

Publication (PDF, 608KB)

Authors: Paul Brown

Local information on evapotranspiration (ET) is now readily available from on-site weather stations and/or public weather networks to assist turfgrass professionals with irrigation management decisions. The objective of this bulletin is to simplify the subject of ET and thereby increase the effective utilization of ET in irrigation management.
Jan 2014

Arizona’s Grass is Greener

Publication (PDF, 533KB)

The challenges of Arizona’s climate have led researchers to investigate the management and stress tolerance of turfgrasses for arid and semi-arid regions. Heat, salinity, and drought stress tolerance are of particular concern.
Jan 2014

Contribution of the Golf Industry to the Arizona Economy in 2014

Publication

Authors: Duval, D., A. Kerna, G. Frisvold, K. Umeda and R. Li.

Golf is an important part of Arizona’s economy and a defining component of the physical landscape of many of its cities and towns. Golf facilities support jobs and income for the state economy, indirectly support other Arizona businesses that serve and supply the facilities, drive tourist spending by attracting visitors from outside the state, and support sales by retailers offering golf equipment and merchandise to Arizona golfers.
Oct 2013

Cactus Clippings

Publication (PDF, 19MB)

Authors: David Kopec, Brandon Williams, Bubba Wright

This document contains news articles about turf and landscaping management from the months of July to September. Some suggestions about turf fertilization and management are given.
Jun 2013

Strategies for Nutsedge Control in Turf

Publication (PDF, 105KB)

Authors: Kai Umeda

Sometimes known as the "world's worst week", nutsedge can be difficult to deal with. This article discusses the use of MSMA (monosodium methylarsonate) to control nutsedge and some of the regulations in place for that chemical.
Nov 2012

Turfgrass Consumptive Use: Payson, Arizona

Publication (PDF, 640KB)

Authors: Paul W. Brown and Chris Jones

One of the concerns associated with turfgrass is water use due to irrigation. In some parts of Arizona water supplies are very limited. This article discusses the consumptive use (CU) of turfgrass. Graphs and charts are used to help illustrate this.
Aug 2012

Using Gypsum and Other Calcium Amendments in Southwestern Soils

Publication (PDF, 854KB)

Authors: Dr. James Walworth

Soil aggregate formation and stability, the primary features of soil structure, are two of the most important manageable soil physical properties. This article discusses how gypsum and other calcium amendments interact with the soil in this context.
Feb 2012

Turfgrass Consumptive Use: Prescott, Arizona

Publication (PDF, 527KB)

Authors: Paul W. Brown and Jeff Schalau

One of the concerns associated with turfgrass is water use due to irrigation. In some parts of Arizona water supplies are very limited. This article discusses the consumptive use (CU) of turfgrass. Graphs and charts are used to help illustrate this.
Nov 2011

Turfgrass Consumptive Use: Flagstaff, Arizona

Publication

Authors: Paul W. Brown

One of the concerns associated with turfgrass is water use due to irrigation. In some parts of Arizona water supplies are very limited. This article discusses the consumptive use (CU) of turfgrass. Graphs and charts are used to help illustrate this.
Oct 2011

Soil Sampling and Analysis

Publication (PDF, 616KB)

Authors: J.L. Walworth

This publication provides information on techniques of soil sampling and analysis for horticulture and agriculture. Soils are sampled to determine physical conditions, fertility (nutrient) status, and chemical properties that affect their suitability as plant growing media.
Sep 2010

Siting and Maintenance of Weather Stations

Publication (PDF, 1.09MB)

Authors: Paul Brown, Bruce Russell

A number of equipment manufacturers provide weather stations and software that help the groundskeeper with decisions related to irrigation management. This article discusses the utilization of weather stations to assist in turf management.
Aug 2010

Factors Contributing to Development of Salinity Problems in Turf

Publication (PDF, 1.29MB)

Authors: Paul Brown, Jim Walworth

Professional turfgrass managers in many parts of Arizona are confronted with a growing number of management challenges related to excess levels of salinity and/or sodium in soils. The consequences of excess salinity and/or sodium are poor turf performance, reduced water infiltration and the appearance of a new turf disease, rapid blight (Labyrinthula terrestris).
May 2010

Laboratories Conducting Soil, Plant, Feed or Water Testing

Publication (PDF, 376KB)

Authors: Jeff Schalau

Contains a list of Laboratories conducting soil, plant, feed or water testing. Information includes addresses, phone numbers, websites and some of the basic things they test there.
Jun 2006

Evaluation of ADWR Water Duties for Large Turf Facilities

Publication (PDF, 1.87MB)

Authors: Paul W. Brown

The Arizona Department of Water Resources limits the amount of groundwater large turf facilities may use for irrigation int he Tucson and Phoenix Active Management Area. This article investigates whether these limits on water usage are leading to salinity issues in turf.
Aug 2004

Overseeding Sports Turfs in Southern Arizona

Publication (PDF, 109KB)

Authors: D. Kopec and K. Umeda

Bermudagrass will stay green eight months of the year if we let it. But, we don't let it! If left alone, bermudagrass would be green from mid-March to late October, before it goes into cold-induced dormancy, followed by complete loss of color due to hard frosts. The solution.....overseed with cool season grasses. A list of suggestion along with their pros and cons are given.
Apr 2003

Turfgrass Consumptive Use Values for the Tucson Area

Publication (PDF, 359KB)

Authors: Paul Brown

Consumptive use (CU) curves that provide average rates of turfgrass evapotranspiration (ETT) are widely used by irrigation professionals for design and management of turfgrass irrigation systems. In this report, we apply Kcs developed from these studies to long-term records of ETo to provide updated CU information for turfgrass grown in the Tucson metropolitan area.
Apr 2003

Turfgrass Consumptive Use Values for the Phoenix Area

Publication (PDF, 366KB)

Authors: Paul Brown

Consumptive use (CU) curves that provide average rates of turfgrass evapotranspiration (ETT) are widely used by irrigation professionals for design and management of turfgrass irrigation systems. In this report, we apply Kcs developed from these studies to long-term records of ETo to provide updated CU information for turfgrass grown in the Phoenix metropolitan area.
May 1996

Arizona golf course pesticide use survey

Publication (PDF, 70KB)

Authors: Sheila D. Merrigan, Paul Baker, David Kopec, and MarK Clark

Arizona's golf course industry has grown rapidly over the last 15 years. This survey was conducted to help give baseline data about pesticide usage to the gold course industry, the pesticide industry, and the public.
May 1991

Nitrogen Management Guide for Turfgrass

Publication (PDF, 140KB)

Authors: Thomas A. Doerge, Robert L. Roth, Bryant R. Gardner

The fertilizer recommendations in this guide are for high quality bermudagrass turf.

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