Transverse and longitudinal sections through narcissus bulb showing typical injury by bulb scale mite.
Phelps et al. (1993) developed a simulation model of large narcissus fly phenology that predicts the times of adult fly emergence, oviposition and egg hatch in relation to temperature.
The large narcissus fly is widely recognised as representing a serious problem for commercial bulb production.
No decision has yet been reached regarding an increased duty on tulip and narcissus bulbs.
My flowers would be rather special because they would be the species called phurnacitis narcissus.
I have made inquiries as to what the effect on the price would be of the somewhat more sharp increase for carnations and roses, sharper than for narcissi.
Therefore, where anemones and narcissi are concerned, there is a very good case, because these are flowers on which the people in that part of the country largely depend.
This has included studies of the efficacy of insecticides; the susceptibility of narcissus varieties to the fly; and the effects of a range of growing practices.
