[smurg]

I have a few spot that are discolored and becoming dead and straw colored. They're at the top of the small slope. I'm thinking it's either spring dead spot and/or rust but, the area hasn't completely died. I've been mowing the Tifway 419 at about 1-1.5" with a manual reel, putting down milorganite at 1 lb/M monthly, and may be low on the water (just rained a ton recently though). Roots still looked tan and didn't see any root rot to my knowledge:

 

[smurg]

Upon further review I'm thinking it's "melting out" / leaf spot. Will try some Bonide propiconazole and move to some Heritage if I don't see much action. I found a good link from another thread that helped out: http://turfdiseaseid.ncsu.edu/

 

[Spammage]

Hopefully that will take care of it.

 

[Tellycoleman]

Can you have spring dead spot in July?
If grass isn't dormant because of the heat. Could it be that the area has a lot of runoff during a rain or erosion issues.
Or compaction , construction debri, or shallow rocks??. Ant trouble putting a screwdriver in the area?
Also a lot of contractors burn leftover items on site. Was that a burn area during construction?

 

[Mightyquinn]

I agree with Telly. I think it's a water/Nitrogen issue. You say you have applied Milo at 1lb/K? Is that of product or Nitrogen? Looks to me like it's also not getting enough water too as I don't see any lesions on the blades. I would go that route before doing any fungicide apps.

 

[smurg]

I agree with Telly. I think it's a water/Nitrogen issue. You say you have applied Milo at 1lb/K? Is that of product or Nitrogen? Looks to me like it's also not getting enough water too as I don't see any lesions on the blades. I would go that route before doing any fungicide apps.

May be watering as I see the section is at the ridge of a slope. The 1 lb/K is of nitrogen (2 bags for 5k sq ft).

But I was seeing those marks on the blades of grass themselves, some orange at the tips and figured I had something else going on as well. We've been having some rain at nights recently.

Those darker areas are where I overapplied Celsius and have been working some extra love in: composted manure, topsoil, watering, and hand spread fert.

 

[Ral1121]

I agree with Telly. I think it's a water/Nitrogen issue. You say you have applied Milo at 1lb/K? Is that of product or Nitrogen? Looks to me like it's also not getting enough water too as I don't see any lesions on the blades. I would go that route before doing any fungicide apps.

May be watering as I see the section is at the ridge of a slope. The 1 lb/K is of nitrogen (2 bags for 5k sq ft).

But I was seeing those marks on the blades of grass themselves, some orange at the tips and figured I had something else going on as well. We've been having some rain at nights recently.

Those darker areas are where I overapplied Celsius and have been working some extra love in: composted manure, topsoil, watering, and hand spread fert.

If you are only putting down 2 bags for 5k you are not getting anywhere near 1lb of N per 1k. For 5-4-0 mix of milo.,. Take the N number of 5 and divide it into 100. That tells you how many pounds you need for 1lb of N per 1k. You would need 20lbs of milo alone for 1k. So for 5k, you would need 100lbs of milo which is pretty much 3 bags of milo. You really only put down around .7 lbs of N per 1k.

Ignore what I said if you are using 50lb bags. Just thought about that but I never see them around me. I am assuming you are using the standard 35lb bags of milo.

 

[smurg]

If you are only putting down 2 bags for 5k you are not getting anywhere near 1lb of N per 1k. For 5-4-0 mix of milo.,. Take the N number of 5 and divide it into 100. That tells you how many pounds you need for 1lb of N per 1k. You would need 20lbs of milo alone for 1k. So for 5k, you would need 100lbs of milo which is pretty much 3 bags of milo. You really only put down around .7 lbs of N per 1k.

Ignore what I said if you are using 50lb bags. Just thought about that but I never see them around me. I am assuming you are using the standard 35lb bags of milo.

I'm aware of how %'s work, but you got me. Only putting down 4.32 lbs of N over 5k Sq ft (6-4-0, 36lb bags). Still I saw a bit of mycelium and mushrooms pop up this morning. Found some more orange tips on blades and leaf spots. Propiconazole was delivered so I'll scour the yard for other areas and apply as i go; we'll see how that goes.

 

[Mightyquinn]

Another thing I noticed after I posted was that it looks like you are in a new construction home so I am betting that the sod isn't very old and may not have deep roots yet. It still looks like a water/fertilizer/mowing issue to me. I think you might be better served to maybe drill some holes in the "dry" areas and hand water some spots every day and see what you get after a week. You might be surprised at what's under the soil causing your grass not to grow.

 

[smurg]

Another thing I noticed after I posted was that it looks like you are in a new construction home so I am betting that the sod isn't very old and may not have deep roots yet. It still looks like a water/fertilizer/mowing issue to me. I think you might be better served to maybe drill some holes in the "dry" areas and hand water some spots every day and see what you get after a week. You might be surprised at what's under the soil causing your grass not to grow.

We're already coming into our 2nd season and the dirt lot next door is in front of the model home and one of the last to go up. Our sod was laid around March 2017 and obviously looked great the first year as the builder watered it in and we didn't close until the fall. I have been doing the screw driver test all over, pulling up pieces of 2x4 and baseball sized rocks all over. The grass is dead in spots where there was overpour or poor forms for the conrete: sidewalks, driveway, and where there has been construction debris.

I got a soil savvy test done on the original soil and attached it below (I omitted the soil that was black and rich looking that was part of the original sod, only 1" or so. I figured the roots would be growing into what it was laid on top of). Will probably try to go through the local NC extension since SS is somewhat of an unknown entity and the forum isn't sold on it. Bought 200 lbs of limestone and plan to spread that, but will probably wait until I can rent and run an aerator so it can get deeper into the soil profile.

Just this morning when spraying the Bonide, I noticed powdery mildew on the crepe myrtles and young oaks in both the front and back yard. Noticed some mycelium early in the am yesterday, so I sprayed the Propiconazole is more than just the spot pictured.






Pulled these from a ~4ftx1ft section near the sidewalk. I think they grade with a dozer and just push all the shit down to the bottom of the slope and then lay sod on top of everything: