That's total BS, you just have to be good at gardening and farming.
Acuualy thats far from true, a precise knowledge of the complex dependencies and symbiotic relationships between microscopic organisms, molecules, prey and predator and vegetation is required. The entire human scientific experience has not developed such knowledge yet.
For the record it was farmers and environmentalists that destroyed the surface soil layer in Australia and turned much of the habitable and farming viable land into desert. By introducing hunting game - the rabbit.
It's only been in the last few centuries that we've started figuring out how to maintain viable farms on the same plot of land for a long period of time. Historically, farming a plot of land until it was exhausted and barren, then moving on to a new plot of land, was the general approach.