What if discarded tomato waste could do more than end up as food-processing waste? A study by researchers at the University of California explored whether tomato pomace, the solid material left after tomatoes are processed, could be mixed into soil and used as part of a technique called biosolarization. The laboratory experiments found that tomato pomace could raise soil temperatures by up to 2°C for about four days under aerobic conditions while also triggering chemical changes associated with soil-pest inactivation.