Juggerbot

It can depend on the price of fodder. If hay is cheap, there's not much incentive to spend time/fuel on baling stalks.

However, if they're not baled, they decompose in the field, which technically reduces fertilizer inputs.

>there's plenty of pristine, hardly used, soil around.

Gonna need a [citation needed] on that one.

>In an unhealthy soil environment where bacteria and funghi are depleted, the plants are dependent on being fed soluable forms of all nutrients.

I don't think natural soil systems have been able to keep up with the nutrient demands of modern crop production for some decades now.