Abstract: Packaging systems (304) are provided for preventing post harvest microbial, including but not limited to fungal, diseases of food systems, such as but not limited to fresh produce, such as but not limited to berries (e.g., strawberries, blueberries, and/or the like). For example, various anti-microbial (e.g., anti-fungal) compounds (including multi-component compositions that can be selectively activated) can be incorporated into a container or sachet (26, 112) that in turn can be incorporated into a package insert (10, 100, 202, 300). The package insert (10, 100, 202, 300) can include various surfaces that are provided with a plurality of holes (22, 108, 204) formed therein for allowing the anti-microbial (e.g., anti-fungal) compounds to diffuse through the package insert (10, 110, 202, 300) and out through the plurality of holes (22, 108, 204).