Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2000.306.308Myzocallis coryli (Goetze) on Hazel bushes to an Agroforestry System]]>NaeemMuhammad ComptonSteve 2200032The densities of filbert (hazelnut) aphid, Myzocallis coryli (Goetze) on the hazel bushes were measured in both 1993 and 1994. The aphids were present on the hazel during from May to September and peaked in July. Significantly greater densities of M. coryli were found in block 1 in the tree rows in both years (1993 and 1994). The population densities of aphids on hazel bushes were found to be significantly greater in the forestry plots than in the tree rows. The fewer predators observed provided too small a sample size for any meaningful comparisons of percentage predation to be made.]]>AliNiazee, M.T.,19801980Crawley, M.J.,1993Pages: 398Pages: 398El-Haidari, H.,1959Myzocallis coryli (Goetze), in the central Willamette valley.]]>1959Incoll, L.D., D.T. Corry, C. Wright, D. Hardy and S.G. Compton et al.,199452223Lewis, T.,196963315317Lewis, T. and J.W. Stephenson,196658355363Messing, R.H. and M.T. AliNiazee,1986Myzocallis coryli (Homoptera: Aphididae).]]>1510371041Messing, R.H., M.T. AliNiazee and J. Calkin,1988Myzocallis coryli (Goeze)(Hom., Aphididae).]]>1067278Minks, A.K. and P. Harrewijn,19891989pp: 312pp: 312Morris, M.G. and N.R. Webb,1987Naeem, M.,19961996Sotherton, N.W. and M.R.W. Rands,19871987Strong, D.R.,19841984pp: 313-327pp: 313-327