Lawn damage after treatment - Roll turf approximately 2 years old

Hi,
you can see a possible answer yourself in the picture. Part of the lawn is in the shade and still looks good there. It’s the same with us. We have a spot in the garden that gets full sun from sunrise to sunset. You can’t water against that and the lawn burns there while it looks much better just 2 meters away.

Btw: I also use the Schwabdünger, it’s still the best I’ve found.

Best regards,

Andreas

I understand everything. But it only applies to me to a limited extent. What confuses me is that where the grass burns, the blades are much thinner than where it stays green. There it is also not trampling-resistant. I have overseeded evenly. But in the bare spots, it seems that only these thin-leaved grasses are left. The thin grasses are all burnt, while the thicker ones are green:

There is a lack of water. Possibly the soil in these spots absorbs water poorly (keyword hydrophobicity), is exposed to the sun longer, or there are reflections from windows or something like that.

did you mix the seeds well beforehand? It is always a mixture. In (almost) all lawns there is also Poa annua. It turns brown very quickly like all shallow-rooted grasses.

Currently almost every lawn has a few dry spots. Not as severe as in the pictures but they are present. The only option is to water heavily…

I aerated in those spots and sanded a bit. I manually removed the [Poa Annua] (at least in the larger areas) and overseeded those spots. But that was already months ago. By the way, I overseeded with the "Traumrasen" from Eurogreen. So rather something high-quality.

Presumably, in addition to the soil, your irrigation is not homogeneous. The only solution is longer running times and, given the temperatures, more frequent ones as well.

yesterday after watering it looks like this (so much better). Still, I don't understand why some areas become so bare while other spots stay nicely green.

The problem with "burning" from over-fertilization is not that there is no water in the soil, but that moisture is drawn out of the plant due to osmotic pressure. So if you can't rule out a fertilizing mishap and despite regular watering the lawn (in some places) doesn't turn green, that could very well be the reason. If the principle "lawn needs water, water, water" was previously applied, the lawn only developed shallow roots and is therefore susceptible when there is no water ;-) But this applies to many plants, especially hedges (water heavily at first, then no more, no automatic irrigation!)