From what you've described, it could possibly be from a disease that attacks warm-season turf (St. Augustine & Bermuda) and is called; "Take-All Patch" or "Bermuda Decline" caused by the fungus Gaeumannomyces graminis var. graminis.
It commonly occurs during the rainy season (favors cool moist weather) and the first signs of the disease are yellow leaves and dark (darker than usual roots). And If you're able to lift the infected roots easily from the soil, it's a good sign you have this disease. The white mold you're seeing is more likely a fungus that's growing due the decay rather than causing the problem itself. The fungus grows on the surface of roots, stolons, rhizomes, and the upper portions of the grass. As the weather warms, you'll see the disease move more quickly as ambient and soil temperatures rise and provides a more suitable environment for the disease to develop.
Here are some suggestions to help your problem;
1) De-thatch if necessary - since this will help eliminate the source for them to survive
2) Aerify- increases water penetration and lessens the possibility for water to move the disease throughout the rest of your lawn
3) Irrigate when only necessary- although it's difficult to keep rain off your lawn, you might consider shuttting off your automatic sprinklers
4) Raise the mowing height- reduces the stress of your turf
5) Adjust the pH of your soil to a more acidic state (6.0 to 6.5)- this can be achieved by using sulfur
6) Use a slow-release fertilizer or try to find an acidifying fertilizer; try to avoid any fertilizers that contain urea
7) Spray any of the following that contains these fungicides (active ingredient with trade name in parenthesis); Fenarimol (sold as Rubigan), azoxystrobin (Heritage), triadimefon (Bayleton), propiconazole (Banner), or thiophanate-methyl (sold under many names)
You'll probably have the most luck finding Triadimefon (Bayleton) or Thiophanate-methyl. Sorry but there aren't any biological controls available to effectively eliminate this disease.
Sorry about so much information but this is a very serious disease and you should start treatment ASAP!
Hope all this information helps. GOOD LUCK!
(certified professional crop consultant w/degree in plant science)
2006-11-29 03:21:42
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answer #1
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answered by jazzmaninca2003 5
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If you pull on the dead spot and it just lifts right off, you have a grub problem. These little thick white worms which are about an inch long usually come around August and eat the roots of the grass. Your grass needs to be raked in each spot. Then put down some black soil and then sprinkle seed. I would probably wait for spring. I'm not sure as what happens in Florida during winter, but your grass has to go dormant at some point. Make sure to keep an eye out for more brown spots. You will have to use a grub killer. A pesticide of that nature. It happened to us one year and that's how we know to keep an eye out.
2006-11-26 11:04:58
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answer #2
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answered by Anonymous
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The only way for you to know exactly what is going on is to take a plug out of the lawn - soil and all - down about 2 inches. Take it either to a local nursery or the local agricultural station (often associated with a local college or state university). They can probably tell you right away what's wrong and advise a strategy for the cure.
2006-11-26 16:42:28
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answer #3
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answered by SafetyDancer 5
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I am not sure about Florida, but I think all grass has a dormant season. Maybe you did not get enough rain in August, once you get water on it it comes back to life.
2006-11-26 10:56:57
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answer #4
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answered by Thomas S 6
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that's a exceptionally sturdy UU team. i might advise changing T-bolt on Kangaskan for a rock sort circulate (stone part if it learns it), on account that decision band does actually no longer something for particular strikes. concentration punch is tough to apply without subbing, according to hazard yet another circulate might artwork greater effective. i can work out what you're doing with swellow, besides the undeniable fact that it is not going to final long even without the leftovers. Fly particularly is basically too ordinary to alter into. a concentration sash might artwork greater effective with undertaking. Dewgong and lanturn are very comparable, yet i think of they artwork on your team, being those you baton-pass to. The confuse/twave/entice mixture is effective on lanturn, besides the undeniable fact that it would be effective to have t-bolt on it for some extra attack skill. universal, effective UU team. 8/10.
2016-12-10 16:37:45
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answer #5
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answered by ricaurte 4
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If you pour soapy water on the patches and see little grubs come out, it's definitely a grub problem as mentioned above.
2006-11-26 13:19:35
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answer #6
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answered by Anonymous
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You need to water it everyday and i mean flood it . make sure its like not hitting the sun.
2006-11-26 13:21:58
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answer #7
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answered by Anonymous
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