Objet : Re: [pbs] Nematode control of Narcissus bulb fly

Most interesting ,Mark.
I have a patch of Narcissus pseudonarcissus here in Seattle, and the
Narcissus fly doesn't touch it either. I always assumed their is some
particular chemical make-up of the tissues that doesn't appeal. Some
Narcissus varieties are magnets for the fly, and others apparently have
some compound or composition to repel, or, at least not interest this pest.
Rick K"