by the pictures from your website it looks like I may have ascochyta leaf blight in my lawn. the lawn went from green to aggressively moving to large brown areas in less then a week. the irrigation system is fine as the lawn gets full coverage with water. it isn't grubs as the roots system is still firm in the ground. I also dug down into the soil and saw no evidence of grubs. what advice can you give me in order to halt the spread of this in my lawn? thanks, Tom Taylor Parker CO