Sure other fuels go into it but it also takes in things like sunlight and water pressure as inputs for doing work (from the growing crops perspective at least). Whereas with transporting the goods, you don't have solar powered trucks or things powered from watermills or hydroelectricity moving these tomatoes. 100% of the energy makeup of the transportation side will be from fossil fuels, in contrast to the growing where fossil fuels make up some fraction but not the whole due to the work done by the sun and pressurized water. Likewise with handling and storage. I expect tyson foods has no bulk freeze drying apparatus that is powered independently with its own nuclear reactor, they are probably pulling from the dirty grid.
