Population fluctuations and diurnal activity of the leafhopper, Empoasca decipiens on some summer crops in Kalubia governorate, Egypt [electronic resource].

Includes references.

The present work is a study on population fluctuations and diurnal activity of the leafhopper, Empoasca decipiens (Paoli) on seven early summer crops ( green bean ,cowpea, potato, tomato , squash , cucumber and hairy cucumber) as well as six late summer crops (mungbean , egg-plant ,green pepper , okra, pumpkin and Jerusalem artichoke ). Results showed that squash and egg- plant were the most infested crops .The insect had three peaks of seasonal abundance; on 8 May (the highest) which occurred on the early summer, on 5 June (the lowest ) and on 31 July ( medium ) on the late summer. The insect passed throughout four generations from mid-April to the end of August. The climatic conditions during the above peaks were about 24.6 -27.8°C and 58.9-60.3%R.H. Three critical periods were suggested to control this pest in the field . The population density of E. decipiens was the highest on cowpea, squash (early summer crops), egg - plant and okra (late summer crops). Key words: climatic conditions, leafhopper, predator.

Summary in Arabic.

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