I don't see any fungus. You've actually done a phenomenal job of caring for that sod for this time of year. I would just keep doing what you're doing. I raised an eyebrow to review the 5pm watering, but quickly reminded myself that whatever you're doing, it's working. Stay on your plan, and this fall it will recover with proper TTTF practices.

 

I disagree.

I would stop the 5pm watering. Keep it at 4am and maybe noon. I would aim for 0.2in of irrigation per day.

I don't like the look. It does look like a fungus could be starting. I would use azoxy (diseasex is the granular but more expensive).

I would also try to mow it. Too long will keep the leaf surface area moist and can make fungus pressure higher.

 

By day 10-14 you should mow for the first time, being careful with your turns.

 

I've seen much worse by week 3 for sod installs this time of year. He/she has done a great job!

It looks like it could be a full sun location. What time does the sun hit it and what time does the sun leave it?

The other person is right about seeing some light fungus pressure. I looked again and I do see at least one hourglass lesion in your 3RD pic, indicative of dollar spot. Azoxy would not be your best option for DS. There are some other minor lesions that could be linked to BP and some other diseases, but nothing alarming. I would use Xzemplar for this specific situation and time of year.

 

Thanks for the responses! Yes Back yard is full sun 7am-7pm for most. I will cut that 5pm watering. Probably too humid out for it to completely dry before sun down. I have not mowed, but I will now and bag it. I do have some propiconazole on hand, would that work? And should I apply morning or night? If not I can grab something better from siteone

 

Get azoxy instead. Generally a better fungicide and doesn't have the growth regulator effect of propi.

 

:no:

 

Decided not to apply fungicide because it was only in small patches. Just threw down .33 N per k to slowly push it out, also Hydretain. Still dialing in sprinklers to fix the dry areas in the middle of the yard.

 

 

So it just needed feeding, huh? Nice work.

 

I believe so, thank you. Can't wait to give it a healthy dose in September

 

Based on observation and as you indicated that area of the grass gets 100% sun. That would almost indicate that you will need more water for the sod root system to stay attached to the soil. I would put down a slow release fertilizer with some iron.

 

2 weeks after Flagship Fertilizer

 

That looks incredible. Nice job!