Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2008.2341.2345HashemiB. DamavandianM.R. Vafaei ShoushtarilR. TafaghodyniaB. 1220081119The importance of pre spring spray against citrus aphids,
Pulvinaria aurantii Cockerell and Panonychus citri McGregor
that are the most important pest of citrus during spring was tested. In
this research, 150 trees ten years old sweet orange (Thomson navel on
Citrus aurantium (root stocks)) in a citrus orchard approximately
three hectares sampled. The experiment was laid out in a totally randomized
(one-way) design replicated five times. According to the results, the
pre spring spray do not effect on population density of citrus aphids
and P. aurantii during March, April, May and June. However, the
P. citri population decreased. Therefore, it seems the pre spring
spray in citrus orchards is not necessary, but if P. citri is observed,
the pre spring spray should be recommended. ]]>Bedford, E.C.G., M.A. van den Bery and E.A. De Villiers,19982nd Edn.,Cisneros, J.J. and L.D. Godfery,200130501510Damavandian, M.R.,19931993Damavandian, M.R.,20072007Damavandian, M.R.,2007579296Damavandian, M.R. and S. Tavakoli,20042004pp: 226226Davidson, N.A., J.E. Dibble, M.L. Flint, P.J. Marer and A. Goye,19911st Edn.,Dent, D.,19911991French, J.V. and E.M. Hutchinson,198034914Hallaji, S.M.F. and J.J. Sanadi,20042004pp: 304304Hashemi, B.,20062006Hollingsworth, R.G., B.E. Tabashnik, D.E. Ullman, M.W. Johnson and R. Messing,199487293300Karner, M.,19991999Kerns, D.L. and M. J. Gaylor,19928518Metcalf, R.L. and W.H. Luckmann,19943rd Edn.,Mioannidis, P.,19981998O'Brien, P.J., Y.A. Abdel-AAl, J.A. Ottea and J.B. Graves,1992Aphis gossypii (Hom: Aphididae) from midsouth cotton.]]>85651657Rajabpour, A.,20062006Yamamoto, A., H. Yoneda, R. Hatano and M. Asada,199537513519Yamamoto, A., H. Yoneda, R. Hatano and M. Asada,1996214347