Further reading (Leafhopper)

Charles, J. G., Walker, J. T. S. & White, V. 1994. Resistance of Froggatt’s apple leafhopper Edwardsiana crataegi Douglas, to azinphos-methyl. Proceedings of the Forty Seventh New Zealand Plant Protection Conference, 333-336.

Jay, C. N. & Cross, J. V. 1996. Survey of leafhopper damage to apple 1996. Report of APRC project SP106 issued 3 January 1997, 14pp.

Krczal, G. Krczal, H & Kunze, L. 1989. Fieberiella flori (Stal.), a vector of apple proliferation agent. Acta Horticulturae 235, 99-106.

MacNeil, J. D., Hikichi, M. & Downing, R. S. 1987. An investigation of the effects of seasonal changes, leaf maturity, nitrogen deficiency and leafhopper injury on the chlorophyll content and diffuse reflectance spectroscopic properties of orchard leaves. International Journal of Environmental Analytical Chemistry 31, 52-62.