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Fungus-Red Thread I think

Discussion in 'Lebanon Turf' started by NoWalk4Me, Apr 11, 2005.

  1. NoWalk4Me

    NoWalk4Me LawnSite Member
    Posts: 107

    Does Lebanon offer any fungicide that will take care of red thread? I've got a Leb dealer w/in 2 miles of my house and they are great people.
     
  2. Ray@LebanonTurf

    Ray@LebanonTurf LawnSite Member
    Posts: 57

    There are several diseases of cool season turf that cause a pinkish color. You may have Red Thread (Laetisaria fuciformis), Pink Snow Mold also called Microdochium Patch, or cool weather Fusarium Blight like Fusarium acuminatum.

    Confused yet? I think your best bet would be Lebanon Eagle fungicide. Here are some links so you can check out the label. Bayleton is also great on Red Thread but I think Eagle has a broader label so it gives you more wiggle room if the diagnosis is off a bit.

    Lebanon Eagle 0.62
    Lebanon Eagle 0.39
    ProScape 8-4-24 with 0.39 Eagle

    If you want to get a solid diagnosis there are some excellent plant diagnostic labs around. Rutgers Cooperative Extension has one and they can take a sample and confirm your diagnosis for a very reasonable cost. RCE Plant Diagnostic Lab

    Regards

    Ray
     
  3. NoWalk4Me

    NoWalk4Me LawnSite Member
    Posts: 107

    Thanks Ray. I tried spot treating last year w/ a liquid fungicide and it got rather pricey as my spot treatment turned into a rather large "spot treatment". I'll check w/ Sharpe's Lawn Eqt. to see which of your products they may have in stock.
     
  4. Ray@LebanonTurf

    Ray@LebanonTurf LawnSite Member
    Posts: 57

    I don't know where you are located, but here is some very timely information on spring disease in cool season turf from Dr. Bruce Clark at Rutgers University. I have tried attaching the file. In case that does not work I have put the file on our web site so you can browse to it. They are seeing both Pink Snow Mold and Red Thread including some control recommendations.

    RCE April 7, 2005

    Best of luck!
     

    Attached Files:

  5. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    Hello fellow North Carolina neighbor.....

    The last few years worth of weather conditions here in NC has been VERY conductive to fungus, that's for sure.

    However, may I pose a question and offer a suggestion?
    Have you taken a soil sample from the affected property for anaylsis?
    If not, I would suggest that you do so.

    The reason being is that I think you will find very low nitrogen content and possibly high soil pH (alkaline). I know that this is supposed to be unheard of in North Carolina soils which are supposed to be naturally acidic. However, I have found such information to be a farce....

    Of the affected sites I have tested in recent years with this type of fungal problem:

    90% had pH levels outside of optimum (high or low)
    75% had high/alkaline pH levels
    95% had very low levels of nitrogen

    I attribute this mostly to weather, misinformation, care from previous services, ect....

    In other words, it is important to seek the cause as well as the solution and then tailor a combination program to combat, treat and prevent. This is because continual curative applications of fungicides can get very expensive for the customer.

    Preventitive applications are cheaper and the NC Turfgrass Council has been working on a forcasting program to help better pinpoint application times for more cost effective tretment. But, in the end it is much more cost effective to pinpoint the orginal cause and what factors are present which make the turfgrass less resistant to disease. Then correct that.

    The factors can be many, such as soil type, soil nutritional value, soil content, soil drainage, what's beneath the top layer of soil, weather conditions, turf care programs, applications, mowing practices and the actual breed and variety of turf.

    Hope this helps....
    DIG IN!
     
  6. Ray@LebanonTurf

    Ray@LebanonTurf LawnSite Member
    Posts: 57

    Interesting theories. There are some very good reference books on turf diseases. I would suggest anyone who needs to manage diseases start there. Most books on disease have some really good color pictures which can be very helpful in diagnosis. Many states also have universities with excellent resources and extension specialists who may be able to help.

    Turfgrass pathologists have been studying diseases since long before anyone reading this was born. Even so, every season there seems to be a new disease, or a change in the casual organism for some disease that we thought we had figured out. Just like diseases of animals, turf grass diseases constantly mutate. A resistant grass variety may become susceptible to some new more virulent strain. It's job security for turfgrass pathologists, breeders, and the makers of fungicides!

    About the only thing that has not changed as far as I know is the basic disease triangle. Pathogen + Host + Environment = Disease. You need all three to have an active infection.

    Nitrogen can help reduce the severity of one disease and exacerbate another. It is very important to try to ID the problem before you apply a solution. There are some very good new fungicides that have very broad labels, but there is no product that controls every turf disease (except maybe glyposate, but eliminating the host is usually not the preferred outcome).

    In my experience there are very few diseases outbreaks that can not be managed until the weather (environment) changes in high cut turf. (Greens tees and short cut fairways where the cutting height is measured in 32nds of an inch are admittedly a very different animal.) Once the environment changes the pathogens are no longer virulent and often the turf will recover. If the client can not tolerate the appearance, or if you have a lethal disease that will cause permanent damage, you need to decide if the use a fungicide to prevent or stop the spread is justified.

    Best of luck!

    Ray
     

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