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  • 23 Jan 2018 9:42 AM | Anonymous

    Student Scholarship Winners

    Congratulations to all student scholarship winners from the 2018 Michigan Turfgrass Conference.

    MTF Scholarship Award Winners
    Left to Right
    Kenyon T. Payne Outstanding Student Award - Reid Rahoi
    MTF Scholarship Chairman - Dan Lucas
    Memorial Service Award - Tom Robbins
    Two Year Sports and Commercial Turf Award - Adam Vecitis
    Norman Kramer Outstanding Student Award - Elana Cadenas Rivas (Not Pictured)

    What's Happening at the MSU Turfgrass Programs!

    Please take a moment to view what is going on at the MSU Turfgrass Program.  Thanks to Dr. Trey Rogers for providing us with this material.

  • 18 Jan 2018 9:57 AM | Anonymous

    Turfgrass Talk Show
    February 10, San Antonio Convention Center

    Free Beer, Edutainment and Munchies.

    Attention MTF & MiGCSA members attending the 2018 GIS in San Antonio.  MSU’s Dr. Nikolai offers the perfect meeting place for distant friends to kick-off their stay in San Antonio.

    The Turfgrass Talk Show takes place from 3:00-5:00 pm February 5 in the San Antonio Convention Center Stars at Night Ballroom. 

    Doors open at 2:45 pm and the first 500 attendees receive two beer tickets for a reception that immediately follows the event.

    The Talk Show and Reception is sponsored by Tru-Turf, a proud supporter of MSU Turfgrass Research, that is celebrating its 30th anniversary.  

    New From the MIGCSA

    Registration is now open for the brand new Match Play Championship. New for 2018, two person handicapped best ball match play championship. $25 per person, 100% of entry awarded back as prize money. Meet new members at a neutral site on your own pace. Starts April 1 2018, ends at the 2018 State Championship on Wednesday, August 29th at Hawk Hollow in Bath. Limited space in each bracket, first come first serve.

    Click here for more information.

  • 02 Oct 2017 1:09 PM | Kevin Frank (Administrator)

    It seems that August and September switched places this year as September delivered record setting heat and generally a lack of precipitation. High temperature records were shattered across many areas of Michigan from September 21-26 when in the Lansing area and throughout of most of the lower peninsula of Michigan high temperatures exceeded 90 degrees. Combined with the high temperatures, many areas of the lower peninsula are still under or near drought conditions. Although forecasts indicate temperatures should be moderating, the National Weather Service Climate Prediction Center is forecasting above average temperatures over the next three months. The combination of warm, dry weather has created some interesting challenges for fall turf management.

    Broadleaf Weed Control

    Fall is one of the best times to treat difficult to control broadleaf weeds such as ground ivy, wild violet, dandelion, and white clover. Weeds that have endured droughty conditions may be weak and burning down the above-ground foliage with a contact herbicide in addition to a translocating herbicide will help in control this fall. Some contact, ”burn down”, active ingredients (a.i.) include carfentrazone, sulfentrazone, pyraflufen. Traditional translocating a.i. (2,4-D, MCPP, dicamba, triclopyr, clopyralid, fluroxypyr, quinclorac, etc.) move into a targeted weed quickly after application, and then move with sugars to an active site where it kills the weed. If the weed isn’t growing due to drought or high temperatures then the herbicide cannot effectively move to the active site in the weed. Although a contact or “burn down” a.i. doesn’t move to an active site, it does disrupt the membrane of the plant, which only requires that it be applied to the surface of the plant. The recommendation for herbicide applications during this dry fall is to attempt to hedge your bets by applying a herbicide that mixes systemic (translocating) active ingredients with a contact (burndown) a.i. (e.g. products include SpeedZone, 4-Speed XT, RedZone, Surge, SureZone, etc.). The translocating a.i. have at least a chance to move to the active site, while the contact will provide some extra burndown, which is not dependent on the growth of the weeds in unirrigated sites.

    Disease Management

    On golf courses there have been many cases of Waitea patch occurring from late summer through early fall. Waitea patch is caused by Rhizoctonia zeae and any of the good brown patch fungicides will help to manage it. However, chlorothalonil is not very effective in controlling Waitea patch. Again this year as summer wound down and fall arrived, resistance raised its ugly head again. Similar to last year the Vargas lab has been receiving calls about fungicides providing only 7 days control of dollar spot. This is called quantitative resistance, which shows up as a shorting of the interval of control compared to the qualitative resistance where the fungicide no longer works at all at any interval. Fungicide resistance is becoming more prevalent in Michigan and golf course superintendents need to be aware of resistance and adjust fungicide application schedules accordingly. Unfortunately, resistance results in shorter intervals between fungicide applications, an increase in number of applications, and increased cost from additional fungicide applications.  

    Rust has become very prevalent this fall, especially in un-irrigated areas. Rust diseases are characterized by yellow to dark brown urediospore infestations that, from a distance, make turf stands appear orange or yellow. As a general rule in almost all cases, rust is considered a cosmetic turfgrass disease that, although it may discolor the turf, will not result in widespread turfgrass death. Fungicides are not usually recommended for control, precipitation and a fertilizer application to stimulate growth will help the turf recover from rust infestations.

    Fertilizer Applications

    Similar to the issue with weed control in un-irrigated turf, fertilizer applications may require special considerations. I’d proceed with any scheduled October fertilizer applications in irrigated, growing turf as planned. However, for drought stressed dormant turf, unless the fertilizer is primarily slow release I would wait until rainfall returns and growth resumes before making an application. Fast release sources such as urea that are applied to dry, dormant turf could result in high gaseous volatility losses. Stabilized urea fertilizers contain a urease inhibitor to suppress volatilization and would be beneficial. However, even if you plan on using these products I’d probably wait until some precipitation returns to stimulate turf growth before making an application.  

    Insect Management

    In the last three years Japanese beetle has spread further into the thumb area, up to Houghton Lake and Pinconning on the eastern side of the state, and up to Traverse City on the western side.  All of these areas are seeing new turf damage from Japanese beetle grubs as the skunks and raccoons dig turf to find them.  This includes golf course, home lawns and sod farms. During fall, Sevin or Dylox can be used to control Japanese beetle and European chafer grubs in turf. Sevin should only be used if the soil pH is less than 7.8. New research on the pathogen we introduced to control Japanese beetle indicates that infestations of Japanese beetle in Kalamazoo, Battle Creek and much of the greater Detroit area have declined by 75% as the pathogen built-up from 2001 to 2016.   We are now distributing infected beetles to the rest of the state. 

    European crane fly populations have built-up to damage levels in much of the greater Detroit and Grand Rapids areas, with a big emergence of crane flies reported by many in late September, 2017. After leatherjackets are found October treatments can be made to prevent most of the crane fly damage expected in late October and next April and May. October treatment options include insecticides with the following a.i.: bifenthrin, carbaryl, chlorantraniliprole, imidacloprid, and trichlorfon. 

  • 15 Jun 2017 11:35 AM | Kevin Frank (Administrator)

    Ant mounding activity is reaching peak levels right now in Michigan.  Typically, ant mounding increases in May and June, then slowly declines in July and August, so that if the ants are undisturbed the number of mounds present in September may be one half one third of what was present in June.   Nearly 100% of the ant mounds on golf courses in Michigan are made by one species: the Turfgrass Ant (Lasius neoniger).   This ant is pretty small: workers are only 3 mm long, and mounds are usually 1 – 2” wide.   Still, they can be so abundant that the mounds interfere with putting or stifle the turf under them.   For these reasons the turfgrass ant is usually suppressed on tees, greens and fairways.   In golf course roughs and home lawns it is considered beneficial because the ants are good predators that help keep turf pests under control. 

    You have probably noticed that most of the ant mounds are along the edges of fairways, tees and greens, with much less or no ant mounding in the center.    This is because the surrounding turf supports many colonies of turfgrass ants that will establish satellite colonies on the fairways, tees and greens.   Insecticide applied to suppress ant mounding should also be sprayed 10 – 20’ into the surrounding rough to slow the spread back onto the short-mowed turf areas.

    In research funded by the Michigan Turfgrass Foundation we have evaluated insecticides used on golf courses in Michigan to suppress ant mounding.  Superintendents can expect 6 months of ant suppression following a single application of Aloft, Arena or Meridian at the highest labeled rate when applied in May or early June.  In ¼-fairway plots (replicated 6 times) we were able to reduce ant mounding by 90% compared with only a 50% reduction in our standard-sized plots (10’ x 20’).   Efficacy was reduced in the smaller plots because the ants spread back into the plots from surrounding areas.   Merit and other imidacloprid products may also work well for suppressing ants, but the results tend to be less consistent.  This means that if golf course superintendents treat 20’ beyond the edges of tees, greens and fairways, it will reduce re-colonization and dramatically improve ant control, especially along the edges of fairways, tees and greens.  These insecticides are also used for grub control (Japanese beetle and European chafer).   If applied in late May or early June they should control grubs and provide ant suppression.   However, late May is too early to apply an insecticide for European crane fly, so a second application may be needed in mid-September for crane flies on some golf courses in the Detroit and Grand Rapids areas.   Spot-treating tees and greens with a surface spray of a pyrethroid insecticide (Talstar, Scimitar, DeltaGard, Astro, Tempo, and others) will provide a week or two of suppression before the mounds begin to appear again.  

    Dr. David Smitley

    Michigan State University

  • 09 Jun 2017 9:40 AM | Kevin Frank (Administrator)

    It’s already been a crazy weather year with unusually warm temperatures in February followed by more seasonable temperatures in March and excessive rainfall in April and May. June has started nicely but the forecast in the next week is going to leave not only us but the turf feeling oppressed with high temperatures forecast in the high 80’s and low 90’s combined with high humidity. Here are some simple reminders as the heat ramps up this weekend.

    1. Check the Irrigation System

    For the most part irrigation systems have been resting this year as Mother Nature has blessed us with cool temperatures and adequate rainfall. Everyone has certainly used their irrigation system by this point in the year but it might not be a bad idea to go out and actually observe the system operating in critical areas. Any inefficiencies, misaligned, or malfunctioning heads may have been disguised by rainfall to this point but that will not be the case in the next week.

    Areas that reveal poor irrigation coverage first are typically edges of fairways, banks of greens, tees, and bunkers, and the rough.  Many of these areas are also high traffic areas that are subject to another stress, compaction.

    2. Syringing

    In an effort to compensate for poor irrigation coverage and improve water management, hand watering is commonplace on golf courses. In Michigan, we are accustomed to syringing greens during periods of drought but usually not fairways. Dr. Vargas has reminded me that in Mediterranean climates like southern Europe where it does not rain from the middle of May until the middle of September and the temperatures are in the 90’s every day, the superintendent will usually have 3 or more people assigned every day to syringe fairways. When we have similar conditions it may become necessary to syringe fairways, we’re not necessarily talking about the hose crew but rather a short irrigation cycle. It is commonly perceived that noon is the warmest part of the day, when in reality it is often later in the day around 4 to 6 p.m. Syringing late in the afternoon might make the difference this year between healthy, heat stressed turf.

    3. Heat Tracking

    Heat tracks will be an issue on home lawns and golf courses.  Anytime you put traffic from a cart, mower, or spreader on turf that is nearing the wilting point or has already wilted, you will likely see a track in the following days or week. If possible, avoid mowing during the heat of the afternoon.

    4. Wetting Agents

    Wetting agents are critical tools in the arsenal for alleviating localized dry spot but even with wetting agents hand watering may be necessary if it stays hot and dry.

    5. Scout and Plan for Diseases

    High temperatures will be accompanied by high humidity and warm night-time temperatures. Conditions may become favorable for dollar spot, brown patch and even Pythium blight. Most superintendents treat for dollar spot and brown patch on a regular basis.  Pythium blight is not normally treated for on a regular basis in Michigan but when day time high temperatures are in the 90’s and night temperatures above 70°F following a rain, chances are optimal for a Pythium blight outbreak. If caught in time, the turf should recover from the dollar spot, brown patch and Pythium blight, which are primarily foliar diseases.

    Crown rot anthracnose (CRA) can also be a problem in the warm weather on annual bluegrass greens especially if the warm weather is accompanied by excess moisture from frequent rains. Wide spread resistant of Colletotrichum cereale, the CRA fungus, to the benzimidazole and the Qo I fungicides has been reported. Alternative fungicide chemistries should used to control CRA. Adequate nitrogen fertility is also necessary the control this disease.

    Summer patch is becoming an ever-increasing problem.  The early 65 and 75-degree models for scheduling fungicide applications that worked so well for so many years have not worked that well recently in our research trials.  We are now suggesting fungicide applications the first of June, July, and August.  The products of choice should be the DMI fungicides and they should be watered into the top inch of the turf where the elongated crown of the turfgrass plant is. If you can keep the crown of the plant healthy the plant will survive no matter how many roots become infected.

    6. Hydrate

    Just a reminder to keep your self hydrated during the hot weather. There are bound to be some long days and if you’re acclimated to temps in the 60’s and 70’s, temps in the 90’s may cause us to wilt as much as the turf. 

  • 09 May 2017 1:28 PM | Anonymous

    Thanks for your continued support of the Michigan Turfgrass Foundation. The mission of the Michigan Turfgrass Foundation is to support the research, teaching, and extension programs at Michigan State University. If you are not a member and are interested in joining the MTF please Join Us. Another avenue to support the MTF and MSU Turf Team is to participate in bidding or spreading the word of our current TeeTimes4Turf auction, currently over 117 golf courses are available via an on-line auction at www.teetimes4turf.com. The auction ends on Sunday, May 14 at 7 p.m.

    Broadleaf Weeds Flowering

    In the last week, dandelions have been lighting up the landscape with their brilliant yellow flowers. In most areas, the first flush of dandelion flowers has come and gone and now the puff ball stage is in full effect. According to Michigan State University Extension, applying a herbicide at the puff-ball stage can be very effective as this is the time the dandelion is at its weakest because it has just spent all that energy pushing out flowers. Applications prior to puff-ball stage can be effective at burning down the rosette and preventing puff-balls but keep in mind if you really want to get ‘em, schedule a fall application. 

    In addition to dandelions, many other broadleaf weeds are flowering in turf right now. Common chickweed, henbit, shepherd’s purse, yellow rocket, corn speedwell, wild violet and ground ivy are all flowering. All but wild violet and ground ivy are winter annuals. The life cycle of a winter annual is they germinate in the fall, overwinter, and then flower and produce seed in the spring. After flowering in the spring, winter annuals are usually only two to three weeks from dying. If you apply herbicides now, they will be dead and gone in two to three weeks and if you do nothing, they will be dead and gone in two to three weeks. Get it?

    Similar to the strategy of controlling dandelions, there are some very tough to control weeds that are also flowering right now.  Ground ivy (AKA Creeping Charlie), wild violet, and several speedwells (Germander and Creeping) are actively flowering.  The flowering period is the best opportunity to kill them until fall arrives.  The typical broadleaf combination herbicide containing 2,4-D provides fair control at flowering but if you can find combination herbicides with the active ingredients quinclorac, triclopyr, fluroxypyr, or carfentrazone you should achieve better than fair control.   

    Dr. Frank’s work is funded in part by MSU’s AgBioResearch.

    This article was published by Michigan State University Extension. For more information, visit http://www.msue.msu.edu. To have a digest of information delivered straight to your email inbox, visit http://www.msue.msu.edu/newsletters. To contact an expert in your area, visit http://expert.msue.msu.edu, or call 888-MSUE4MI (888-678-3464).

    The mission of the Michigan Turfgrass Foundation is to support the research, teaching, and extension programs at Michigan State University. Join Us to become a member.

  • 12 Apr 2017 11:01 AM | Anonymous

    In the last week, heavy rains blanketed most of Michigan, resulting in streams and rivers overflowing their banks and flooding in many low-lying areas. The water has slowly started to subside and turf that was flooded may be exhibiting damage symptoms. Factors that determine turf survival under water include turfgrass species, submergence duration, submergence depth, water temperature and light intensity.

    Turfgrass species differ in their ability to survive flooding. Unfortunately, there are no hard fast numbers such as Kentucky bluegrass will survive five days and creeping bentgrass 15 days under water. Instead, species have been assigned relative submersion tolerance ratings: creeping bentgrass–excellent; Kentucky bluegrass–medium; Poa annua and perennial ryegrass–fair.

    As submergence depth increases, the potential for injury increases. If the leaf tissue is above the water line–even just a little bit–the turf will probably survive. On golf courses, many have observed creeping bentgrass floating on the edge and even growing out into a lake. This is a perfect example of turf surviving when partially submerged.

    The final two factors affecting turf survival are water temperature and light intensity. Both of these factors are working in our favor right now as the air and water temperatures have been cool. Flooding during the summer months when temperatures are higher often result in damage to the turf when it’s submerged for even a short time.

    As the water recedes, the turf may be yellow or brown. The discoloration is related to the turf losing its ability to take up nutrients. It doesn’t take long once turf is submerged for soil oxygen levels to decline and root hairs to begin to die. As the root system becomes impaired, nutrient extraction and water uptake will be limited. Keep this in mind once the water has receded as the turf may benefit from a light fertilizer application.

    Yellowing of turf following flooding

    To assess if submersion has caused injury, Michigan State University Extension advises extracting several plants from the flooded site and cutting a horizontal cross section through the crown. If the crown is white and firm, it has survived. If the crown is brown and mushy, it’s dead, so time to develop a reestablishment plan.

    Finally, for those areas that were flooded due to a stream or river overflowing a bank, you are probably dealing with silt or soil deposition. Removal of soil deposition can be difficult and seeding into the deposited soil can be an option. Once you’ve successfully reestablished soil, cultivation such as core aeration or slicing will benefit the turf by breaking through deposited soil layers to facilitate rooting and water infiltration.

    If you have concerns on the effects of flooding on trees, Dr. Bert Cregg from the Dept. of Horticulture has written an article addressing this issue http://msue.anr.msu.edu/news/trees_and_flooding

    Dr. Frank’s work is funded in part by MSU’s AgBioResearch.

    This article was published by Michigan State University Extension. For more information, visit http://www.msue.msu.edu. To have a digest of information delivered straight to your email inbox, visit http://www.msue.msu.edu/newsletters. To contact an expert in your area, visit http://expert.msue.msu.edu, or call 888-MSUE4MI (888-678-3464).

  • 24 Mar 2017 9:40 AM | Anonymous
    Posted on March 23, 2017 by Kevin Frank, Michigan State University Extension, Department of Plant, Soil and Microbial Sciences

    Spring 2017 has been a roller coaster ride of temperature peaks and valleys. What started as an early spring with warm temperatures melting snow and many golf courses locally opening the third weekend of February has since stalled. There have been many questions from those tracking growing degree-days (GDD) at GDDTracker this year as to whether or not the models are accurate.

    GDDTracker starts counting GDDs on Feb. 15. The crabgrass pre-emergence model uses GDD (base 32 degrees Fahrenheit) to indirectly measure soil temperatures in a turf situation (enter your zip code under the map and then click on “Crabgrass PR”). The GDD model attempts to predict the optimum application timing for when the 0-2 inch depth soil temperatures consistently reach 50-55 F. Applications made at this time provide adequate time for the pre-emergence herbicide to be applied and watered in before crabgrass germination occurs.

    Summer annual grasses such as crabgrass require proper soil temperature and moisture to germinate and establish. Eighty percent of germination will occur when soil temperatures at the 0-2 inch depth are consistently between 60-70 F. For pre-emergence herbicides to be effective, they need to be applied before the soils reach this optimum temperature range. At the Hancock Turfgrass Research Center on Michigan State University’s campus, we have yet to record a soil temperature of 50 F at a 2-inch depth. The warmest soil temperature recorded this spring was actually 45 F on March 1, and currently soil temperatures are hovering around 36-37 F, well below the range of 50-55 F we’re targeting.


    GDD Tracker pre-emergence model.

    Currently, the GDDTracker model has most of the state south of a line from Grand Rapids-Lansing-Detroit in the optimum application window. I think it’s important to remember that these models are meant to serve as “guides” and not absolutes. At least so far it appears the models are ahead of soil temperatures, but also keep in mind the range the optimum application window extends from 250-500 GDD. You don’t have to apply the first day the model indicates optimum.

    My best guess, and it’s nothing more than a guess based on the 10-14 day weather forecast, is that the application window GDDTracker is predicting will last into the first couple of weeks of April at a minimum.

    In addition to using soil temperatures and GDDTracker, a good environmental indicator for pre-emergence timing is when forsythia bushes are blooming with their bright yellow flowers. Every year I watch a forsythia bush near my office—it happens to be located on the south side of a building so it’s a warm site and usually blooms a little early. I haven’t seen any color from blooms yet.

    Although GDDTracker tells me it’s go-time, the other indicators of soil temperature and forsythia blooming don’t. For now, I’d hold off on making crabgrass pre-emergence applications. When it’s all said and done, I’m guessing the typical target date of around April 15 in mid-Michigan will be about right this year. It’s interesting to note that through March 22, 2017, GDDs (246 GDD) are actually behind 2016 (254 GDD).

    If you have already applied a pre-emergence application or are still planning on making applications in the next week, the applications will still be effective but you’ll just want to be on the lookout for any late spring/summer crabgrass germination escapes that would require post-emergence control. Another strategy for dealing with an early application would be to follow-up with a “booster shot” second pre-emergence application at half the label rate in approximately 30-45 days after the first application.

    Remember, the practices that encourage a healthy, dense turf stand, such as mowing highreturning clippings and adequate fertilization, are all part of an effective crabgrass prevention strategy.

    Dr. Frank’s work is funded in part by MSU’s AgBioResearch.

  • 09 Mar 2017 10:30 AM | Anonymous

    Growing degree-days have accumulated quickly, but it may not yet be time to apply plant growth regulators to control annual bluegrass seedheads on golf courses.

    The quick start to the growing season in 2017 has resulted in many questions regarding growing degree-days (GDD) and application timing for Proxy/Primo to control annual bluegrass seedheads. The green wave of GDD reaching the application timing has swept into Michigan (see figure).

    Many golf course superintendents use two applications of Proxy/Primo for managing annual bluegrass seedheads on putting greens. This combination has proven to be a reliable way to suppress seedheads and enhance turf quality in the spring.

    GDDTracker starts measuring GDD on Feb. 15 and uses anything over 220 GDD (base temperature of 32 degrees Fahrenheit) as a guide to making the first application. However, Michigan State University Extension advises considering some factors. Both products are foliar absorbed and need living, green plant tissue for uptake. Applying Proxy/Primo to dormant turf will not be effective.

    GDDTracker map for Proxy/Primo application timing.

    The decision of when to apply Proxy/Primo should consider the following factors:

    • GDD total greater than 220 (base 32 F).
    • Mowed at least twice.
    • Turf is 100 percent green.

    There is no benefit from applying your Proxy/Primo to dormant turf. However, if you have green-up, mowed and already made an application, the cold temperatures should extend control. Air temperatures drive the metabolism of Proxy. Part of the reason the application range is so generous is that in cold weather it takes longer to get active in the plant, and in warmer weather it gets active faster. The activity of Proxy/Primo will either be “extended” by cold weather or “activated” by warm weather.

    Typically, the second application is made 14-21 days after the initial application. Temperatures are forecast to be cold for the next week, so the second application could be delayed a week or more, as the product will remain in the plant longer in cold weather.


    Annual bluegrass seeding in a fairway. Photo: Kevin Frank, MSU.

    Dr. Frank’s work is funded in part by MSU’s AgBioResearch.

  • 11 Mar 2015 8:33 AM | Anonymous
    Low-Temperature Chamber for Winterkill Research
    Dr. Kevin W. Frank and Dr. Emily Merewitz
    Michigan State University

    The low-temperature growth chamber that was purchased earlier this year by a partnership between the Michigan Turfgrass Foundation’s Founders Society, MSU AgBio Research, and the MSU Growth Chamber Facility has arrived at MSU.  The chamber will be used by MSU turf researchers to investigate winterkill of Poa annuaputting greens.  Initial research projects have been funded by the USGA, MSU Project GREEEN and Syngenta and began earlier this summer at the Hancock Turfgrass Research Center.  Research is focusing on the effects of plant growth regulators and plant health treatments on turfgrass survival under ice.  Turfgrass cores from the field plots have been extracted and are in the process of being acclimated for ice treatment in the low-temperature chamber.  The objectives of these research projects are to determine treatments that can ultimately be used by golf course superintendents to minimize the risk of winterkill on putting greens. 

    Thanks to the MTF Founders Society, MSU AgBio Research, and the MSU Growth Chamber Facility for purchasing the low-temperature chamber to facilitate our winterkill research efforts.

    Graduate student Kevin Laskowski adjusting the temperature of the low-temperature chamber.

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