EVALUATION OF THE ANTI - MOULTING ACTION OF TEFLUBENZURON (CME) ON SCHISTOCERCA GREGARIA (FORSK.)

Document Type : Original Article

Authors

1 Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt.

2 Faculty of Agriculture, Al-Azhar University, Cairo, Giza, Egypt

3 Faculty 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.

Files

Share

How to cite

Statistics