Location: Central Iowa (Soil Test Link)

Grass: Northern Mix

Watering: Infrequent / deep.

I began to notice this a couple weeks ago following many days of heavy rainfall (inches/day) followed by days of high heat and humidity.

I started my first application of Serenade on 07/22/16, but the disease seems to be spreading out and I am most likely late to party with Serenade. I'd like to try and maintain an organic approach and thought about purchasing Actinovate and using it in conjunction with Serenade. But, I feel like it is getting worse and rather deviate from an organic approach at this point to save the grass.

I'd go back afterwards and attempt to repopulate the beneficial bugs through compost, SBM, Alfalfa Mean and etc.

Thoughts???