Can organics (Urea/nitrogen) cause fungus?
IÂve been reading the forums since late last summer, and have learned a lot from the regulars. I am in Easton, PA (eastern), along the NJ border and my lawn is a mix of KBG with perhaps fine Rye mixed in. The problem appears to be with the non-kbg sections.
Last fall I applied Urea which was 46% nitrogen as my last feeding. The application was timed when the top growth stopped and the grass was still very green.
Come spring, the grass awoke nicely. I didnÂt fertilize too early as I wanted the lawn to awaken on its own. On about May 10th, I fertilized with soybean meal at about 15lbs per thousand square feet. On memorial day weekend, I put down cracked corn at about 20lbs per thousand square feet.
Over the last two weeks IÂve noticed dead strands of grass mixed in with the live green grass. When you look close, perhaps 10-20% of the blades are brown (as in not receiving enough water), while the others are green. From what IÂve read, this may be a fungus caused by too much nitrogen. Can this be correct? I didnÂt think I could do damage with organics, but if this is true, then perhaps this was self inflicted.
If this is a fungus, then I will treat with cormeal15lbs per thousand square feet..
Any help or feedback is greatly appreciated.