Unobservant idiots will always try to hold progress back.

As others have said, a monoculture will drain those specific nutrients.

Beans are kinda special being a nitrogen fixer. Lot of plants will drain nitrogen so we fertilize as supplement.

Plant beans, squash, and corn together and you won’t need to rotate your fields and the plants will form a sort of symbiosis working together.

She is playing the part of the dumb antagonist saying Jeff is stupid for rotating his crops.

Somehow the dumb antagonist is 5000 years old. Humanity can be dumb lol.