In my own garden, the more I tried commercial agriculture methods taught to me as a kid (tilling, pesticides, chemical fertilizers, monoculture) the worse my results. The more I stopped fighting nature and learned to work WITH it (lasagna gardening, natural compost, no tilling, companion planting, beneficial insects, diverse plantings) the better success I have.
One is example is my pond. Put water in a container around here and mosquitos will start laying eggs in it. Instead of a dunk, I bought rosy minnows. The rosy minnows eat the larvae and reproduce, then I get free food for my ducks.
Duckweed is something people spend a lot of money trying to eliminate from their ponds. I grow it on purpose. It shades the water and eliminates the need to add an algaecide. When it gets thick, again, I have more free duck food.
Speaking of the ducks, after years of trying to poison slugs or beer trap them with little to no success, now I just let the ducks forage in the garden before planting and after harvest. Sometimes even during growing season with poultry wire protecting the plants. They eat the slugs, earwigs and roly polys. The population of these destructive critters has gone WAAAYYYY down.
Someone told me a about a new potential beneficial pet. Instead of ducks, he uses HEDGEHOGS!! He has a huge garden and lets his pets take care of his destructive insects for him. They even eat aphids! I may need one all of a sudden
Commercial agriculture isn't a system like nature. It is a factory. Well, and attempt to force factory practices on nature.