I understand it does, yes. The infamous Porton Down apparently has (or at the very least had) a large collection of nasty agricultural pests and knows how to we

I understand it does, yes. The infamous Porton Down apparently has (or at the very least had) a large collection of nasty agricultural pests and knows how to weaponise them (and presumably how to defend against them). This kind of thing has indeed been explored in the context of warfare. http://cns.miis.edu/cbw/agchron.htm http://cns.miis.edu/cbw/agchron.htm chronicles some cases (and several hoaxes).