Now I must have misread that too. I though it said you weren’t interested in farming. 
Essentially every plant we eat directly, say tomatoes, or indirectly like bread from wheat, is farmed. There’s science behind optimization of that called agronomy. It includes things as lab related as cellular biology and genetics, to computer driven modeling like GIS, to classic field work like cross breeding.
Then there’s botany, where the the non-field crop stuff falls, like fungi. Of course, there’s a massive crossover.
Biological Systems Engineering applies engineering systems to food production, water and energy.
Finally, many big projects require all sorts of engineers, from ME, Civil, CS, and yes ChemE. Of those, industrial Engineering is the one concentrating on system optimization.
Like many students, you’re overwhelmed feeling “how do I obtain all of the pieces of the puzzle.” In reality, no one does. We just are responsible for one piece on a big interdisciplinary team.
I’d go back to the majors pages at both schools and read everyone that seems germane. My gut says Wisconsin will have what you want, probably Biological Systems Engineering.
Good luck!