The journal Science has published a DARPA (Defense Advanced Research Projects Agency) research study on “Insect Allies” . It appears that the Pentagon has in mind infecting insects with viruses capable of implanting genes in fields of cereals that have arrived at maturity. This would allow the Pentagon to transform normal plants into genetically modified plants.
Researchers at the Max Planck Institute (Germany) and the University of Montpelier (France) consider that this technique could also be used as a weapon to destroy cultures and the propagation of the virus would be unstoppable.
In any event, we would not be able to stop infected insects from spreading the virus. These insects could unpredictably transform plants here or there.