TADROS, A., EL-SHERIF, S., FATTOUH, A. (2001). STUDIES ON POME-FRUIT TREES INSECTS IN A.R.E. 5-POPULATION FLUCTUATIONS OF THE PUBESCENT ROSE CHAFER TROP1NOTA SQUALIDA SCOP. (COLEOPTERA: SCARABAEIDAE) ON APPLE AND PEAR TREES. Egyptian Journal of Agricultural Research, 79(3), 915-921. doi: 10.21608/ejar.2001.319952
ANTON W. TADROS; SAMER I. EL-SHERIF; ABDEL-HAMED A. FATTOUH. "STUDIES ON POME-FRUIT TREES INSECTS IN A.R.E. 5-POPULATION FLUCTUATIONS OF THE PUBESCENT ROSE CHAFER TROP1NOTA SQUALIDA SCOP. (COLEOPTERA: SCARABAEIDAE) ON APPLE AND PEAR TREES". Egyptian Journal of Agricultural Research, 79, 3, 2001, 915-921. doi: 10.21608/ejar.2001.319952
TADROS, A., EL-SHERIF, S., FATTOUH, A. (2001). 'STUDIES ON POME-FRUIT TREES INSECTS IN A.R.E. 5-POPULATION FLUCTUATIONS OF THE PUBESCENT ROSE CHAFER TROP1NOTA SQUALIDA SCOP. (COLEOPTERA: SCARABAEIDAE) ON APPLE AND PEAR TREES', Egyptian Journal of Agricultural Research, 79(3), pp. 915-921. doi: 10.21608/ejar.2001.319952
TADROS, A., EL-SHERIF, S., FATTOUH, A. STUDIES ON POME-FRUIT TREES INSECTS IN A.R.E. 5-POPULATION FLUCTUATIONS OF THE PUBESCENT ROSE CHAFER TROP1NOTA SQUALIDA SCOP. (COLEOPTERA: SCARABAEIDAE) ON APPLE AND PEAR TREES. Egyptian Journal of Agricultural Research, 2001; 79(3): 915-921. doi: 10.21608/ejar.2001.319952
STUDIES ON POME-FRUIT TREES INSECTS IN A.R.E. 5-POPULATION FLUCTUATIONS OF THE PUBESCENT ROSE CHAFER TROP1NOTA SQUALIDA SCOP. (COLEOPTERA: SCARABAEIDAE) ON APPLE AND PEAR TREES
1Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
2Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt
Abstract
Population fluctuations of Tropinota squalida Scop. adults(Coleoptera: Scarabaeidae) in apple and pear orchards were investigated at Oseim (Giza Govemorate) in 1994 and 1995 .Beetles attacked flowers throughout spring between late February and late April having only one annual generation with a single peak (11.9-16.4 beetles/tree) by early April infestation was relatively higher on pear than on apple. Beetles were active during day-time especially on sunny warm early spring days. For both years of investigation, the effect of temperature on T.squalida population was insignificantly positive, while that of relative humidity was insignificantly negative.
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