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| I am in Austin TX and am experiencing frustration with my turf. I am on an all organic method and have not used any synthetic fertilizers, herbicides, or fungicides. I have applied over 6 yards of compost earlier this spring to the entire lawn. I make weekly batches of compost tea. I have used actinovate biological fungicide 4 times. I spray weekly treatments of seaweed. In the past I have had problems with gray leaf spot but this appears to be different. At spring green up I applied 300 lbs of cornmeal to get a jump on any fungus issues and have since applied 300 more pds along with 150 pds of soybean meal. I sprayed the cornmeal with a mycorrhizaw and trichoderma fungi solution. I have core aerated twice as well. We have had no rain up until yesterday but prior to that I was watering once a week, early in the morning.
Most of the lawn is a deep green and very vigorous. There are patches that have no geometrical shape to them and they are a light, lime yellow. Those patches are very thin and and from what I can tell have not expanded in size. Other areas like the ones described have shown up. It seems that near the areas of yellow there have been other patches of dark green turf that looks almost as if it is water logged. The area around that section will have nice upright grass while the "water logged" areas look matted. I have been looking around the stolons of the yellow areas to see what critters I could find. There are two I do not recognize. There were literally dozens of these red chigger looking insects that were the size of a pen head. The other I can only describe as saying it looks like a very small worm. White segmented body and tan/red head. I am attaching a picture of some of the yellowing St. Augustine.
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Follow-Up Postings:
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- Posted by dchall_san_antonio 8 San Antonio (My Page) on Sat, May 14, 11 at 1:58
| Can you post a picture of the lawn? The pic you posted shows signs of fungus on the mowed blades but not on the unmowed blades. Does it seem to grow fine even though it is yellowish? Waterlogged could be a problem - especially if you are only watering once a week. |
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- Posted by texas-weed 7A (My Page) on Sat, May 14, 11 at 15:08
| Does this sound familiar? Description. St. Augustinegrass leaves show a chlorotic mottling or stippling. As the mottling progresses, leaves develop a chlorotic appearance (yellow). If it does there is not much you can do because it is SADV |
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