Laying new lawn (plowing the old area...)

Roundup does nothing to children, after all, they are not supposed to eat it. Fresh sowing can be done on the area 48 hours after application of the product. Please get the expertise first, then complain.

But children throw themselves on the lawn, eat things that have fallen to the ground, etc. If it can be avoided, then you shouldn’t take any risk. Without children, I would be more relaxed about it. But I am responsible for their health, and I don’t want to take any avoidable risks. I generally refrain from using chemical agents in the garden; so far it has worked fine without them.

The way the earth looks, something is missing, there are no such dry spots even when it is wild. Is that clay or some kind of soil?

Regarding Roundup, I used something similar from Compo Freue, because otherwise the weeds would have taken over. Now the lawn looks as it should. But other problems arise, at the curbstones it dries out, etc. But I'll still get it under control.

These are drying and heat damages. If you want to get your grass through the summer, it won’t work without watering and also not without fertilization. I recommend using a mulching mower for this. It always provides a little fertilization. If you want to reseed the grass in autumn, it should be done by the first half of October. Otherwise, it won’t turn out properly. Actually, it has to be done now by September. Then the grass will be green, dense, and frost-resistant in November. K.

That is too dry.. I would let part of such a large area grow as meadow, mow it twice a year and that's it. Little work, nice to look at, good for the environment and the children who get to observe lots of animals. Our meadow was still green despite the drought, of course it was NOT watered. Now after mowing everything is naturally brownish, but that will recover again. I would then look at which spot the current growth looks freshest, and lay the lawn there. In the more difficult locations then just meadow. What I think about Roundup and other poisons or those who use them, I better don't write.

We had sown at the end of October last year and the lawn came through the winter really well.

Now to your opinion:

When a farmer comes to plow, of course you do the entire area in one go. Judging by the pictures, it’s also enough to just shred it with a motor hoe, then collect the green parts, then level it with a rake. I would think twice about deep plowing. The first question is, of course, why does nothing grow there today? What needs to be done for grass to grow there? Unfortunately, I don’t see where you live ... We have had two dry summers in a row now; I would "never ever" lay nearly 1000 m² of lawn. You just can’t water that much for it to work. Make 300...500 m² of lawn including planning irrigation, and plant more shrubs or establish a meadow on the rest. For the lawn, it's best to get a robotic mower. I would sow in the fall (September).