Brown patches on my lawn, due to dog urine.

https://www.countryliving.com/gardening/a38148/how-to-fix-dog-urine-patches/

I haven’t tried it yet but I recently read that if you add 2 Tablespoons of Baking Soda to 1 Gallon water and apply it to the spots it will green right back up.

Also, for a yard that shows stress in the summer sprinkle Epsons Salt and water in. Have not tried this either so start with a small area. Good luck. I will be trying it this summer also.

Water the spot well to dilute the urine. Continue watering. Anything else like fertilizer is not necessary. Grass grows in it's own time. If you can catch her peeing, watering right after is the best time. The grass will grow back, usually greener than the rest of the lawn. To stop this, teach your dog to go in a certain place - in an area of your choice, behind some bushes with gravel on it.

hardwaree stores sell liquid fertilisers high in nitrogen which will help, but really suggest considering changing to a dog tolerant lawn, or teaching to wet not on the lawn. Need to pick up no#2’s asap too

Dig up and reseed

If you're outside when the dog does it's business, have a 2 gallon watering can handy & water the urine to dilute it.

Thank you all for your valuable advise....will do as suggested.