Florida's citrus crop is under assault.  Bacterial infections like canker and greening can race through a grove and destroy it.  Quarantining infected areas has not killed off the bacteria--and there are difficulties in applying pesticides.
     But researchers in North Central Florida may have the answer.
     Bernd Liesenfeld, Ph.D., of Optimized Delivery Technologies, tells TV20's David Snyder why its currently so difficult to apply pesticide to citrus orchards, and how special nanoparticles can do a better job of delivering the pesticide.