EL-GAMMAL, A., GADULLA, A., AMER, M., METWALLY, M., ABDEL-KERIM, I. (1994). EVALUATION OF THE ANTI - MOULTING ACTION OF TEFLUBENZURON (CME) ON SCHISTOCERCA GREGARIA (FORSK.). Egyptian Journal of Agricultural Research, 72(1), 147-154. doi: 10.21608/ejar.1994.444849
ABDEL-AZEM M. EL-GAMMAL; AHMED I. GADULLA; MONUR S. AMER; MONUR METWALLY; IBRAHIM ABDEL-KERIM. "EVALUATION OF THE ANTI - MOULTING ACTION OF TEFLUBENZURON (CME) ON SCHISTOCERCA GREGARIA (FORSK.)". Egyptian Journal of Agricultural Research, 72, 1, 1994, 147-154. doi: 10.21608/ejar.1994.444849
EL-GAMMAL, A., GADULLA, A., AMER, M., METWALLY, M., ABDEL-KERIM, I. (1994). 'EVALUATION OF THE ANTI - MOULTING ACTION OF TEFLUBENZURON (CME) ON SCHISTOCERCA GREGARIA (FORSK.)', Egyptian Journal of Agricultural Research, 72(1), pp. 147-154. doi: 10.21608/ejar.1994.444849
EL-GAMMAL, A., GADULLA, A., AMER, M., METWALLY, M., ABDEL-KERIM, I. EVALUATION OF THE ANTI - MOULTING ACTION OF TEFLUBENZURON (CME) ON SCHISTOCERCA GREGARIA (FORSK.). Egyptian Journal of Agricultural Research, 1994; 72(1): 147-154. doi: 10.21608/ejar.1994.444849
EVALUATION OF THE ANTI - MOULTING ACTION OF TEFLUBENZURON (CME) ON SCHISTOCERCA GREGARIA (FORSK.)
1Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt.
2Faculty of Agriculture, Al-Azhar University, Cairo, Giza, Egypt
3Faculty of Science, Al-Azhar University, Cairo, Giza, Egypt
Abstract
The anti - chitin synthesis action of the urea derivative compound, teflubenzuron ( CME) was tested against the last nymphal instars of Schistocerca gregaria by leaf dipping technique . Fresh leaves of Sesbania aegyptiaca were dipped in different concentrations of 200, 100, 75, 50, 37.5 , 25, 18.7, 12.5 , 9.3, 4.6, and 2:3 ppm from CME then offered to 4th and 5th instar nymphs for one day. The treatments prolonged the stage of the treated instars and a positive correlation between concentrations and failure in ecdysis to the next instar was observed. The percentages of failure in ecdysis to 5th instar female nymphs ranged from 56.7 to 20 while were 73.3 to 43.3 during ecdysis to 5th instar male nymphs. Failure in ecdysis to adult females ranged from 90 to 46.7% while ranged from 53.3 to 13.3 % during ecdysis to adult males.
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