Steps to eliminate lawn leaf spot and melting out

Asked June 16, 2013, 10:34 AM EDT

Disregard - Double-post due to technical difficulties. Original post: https://ask.extension.org/questions/131664

I am reasonably certain that my Kentucky Bluegrass lawn is/was suffering from leaf spot and melting out. I applied fertilizer a few weeks prior coupled with the wet/cool weather and the signs/symptoms of the disease that I have read. I treated with Spectracide Immunox after an application of dish soap from a hose-end sprayer last Monday the 9th. The affected areas still have a water-starved appearence and are slowly browning in spots. I sometimes feel that the lawn looks like it is improving - but other times not. I cannot find the proper treatment steps anywhere on the web beyond chemical applications and methods to prevent reinfection. I don't know what to expect or what I should be looking for. Should I rake/dethatch the affected areas? Will the lawn die and have to be reseeded? I have been following the suggestions I found on the internet and have not been watering, have sharpened my mower blade and have been bagging clippings. Should I have noticed a significant inprovement a week after treatment? I have attached a couple of photos from before treatment. Any suggestions or information would be greatly appreciated. Thanks in advance.

Scott County Minnesota lawns and turf horticulture

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