What I’ve read through the years is to not plant the same crop in the same place season to season. Growing the same crop over again in the same place will promote disease and pests. Coincidentally my new garden was in a spot that has been dormant over 50 years. I have had zero pests and no diseased plants.
I let my poatoes plants blossom and mature. They germinated and now I have potato seed balls that can be used instead of using potatoes for seed.