HAFEZ, A., SHALABY, F., KARES, E., EBAID, G. (2003). LABORATORY AND FIELD STUDIES TO DETERMINE THE EFFECT OF A BIOCIDE (DELFIN) AND AN INSECT GROWTH REGULATOR (CONSULT) ON THE PINK BORER SESAMIA CRETICA LED. AND CERTAIN NATURAL ENEMIES IN MAIZE FIELDS IN EGYPT.. test, 81(3), 1035-1054. doi: 10.21608/ejar.2003.281683
ADEL A. HAFEZ; FAWZY F. SHALABY; ESMAT A. KARES; GORG H. EBAID. "LABORATORY AND FIELD STUDIES TO DETERMINE THE EFFECT OF A BIOCIDE (DELFIN) AND AN INSECT GROWTH REGULATOR (CONSULT) ON THE PINK BORER SESAMIA CRETICA LED. AND CERTAIN NATURAL ENEMIES IN MAIZE FIELDS IN EGYPT.". test, 81, 3, 2003, 1035-1054. doi: 10.21608/ejar.2003.281683
HAFEZ, A., SHALABY, F., KARES, E., EBAID, G. (2003). 'LABORATORY AND FIELD STUDIES TO DETERMINE THE EFFECT OF A BIOCIDE (DELFIN) AND AN INSECT GROWTH REGULATOR (CONSULT) ON THE PINK BORER SESAMIA CRETICA LED. AND CERTAIN NATURAL ENEMIES IN MAIZE FIELDS IN EGYPT.', test, 81(3), pp. 1035-1054. doi: 10.21608/ejar.2003.281683
HAFEZ, A., SHALABY, F., KARES, E., EBAID, G. LABORATORY AND FIELD STUDIES TO DETERMINE THE EFFECT OF A BIOCIDE (DELFIN) AND AN INSECT GROWTH REGULATOR (CONSULT) ON THE PINK BORER SESAMIA CRETICA LED. AND CERTAIN NATURAL ENEMIES IN MAIZE FIELDS IN EGYPT.. test, 2003; 81(3): 1035-1054. doi: 10.21608/ejar.2003.281683

LABORATORY AND FIELD STUDIES TO DETERMINE THE EFFECT OF A BIOCIDE (DELFIN) AND AN INSECT GROWTH REGULATOR (CONSULT) ON THE PINK BORER SESAMIA CRETICA LED. AND CERTAIN NATURAL ENEMIES IN MAIZE FIELDS IN EGYPT.

Egyptian Journal of Agricultural Research
Article 9, Volume 81, Issue 3, September 2003, Pages 1035-1054    PDF (4.78 M)
Document Type: Original Article
DOI: 10.21608/ejar.2003.281683
Authors
ADEL A. HAFEZ1; FAWZY F. SHALABY1; ESMAT A. KARES2; GORG H. EBAID2
1Plant Protection Department, Faculty of Agriculture, Moshtohor, Zagazig University, Egypt
2Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
Abstract
The efficacy of Delfin (a commercial product of Bacillus thurin­giensis and Consult (an insect growth regulator) on the 1st instar larvae of Sesamla cretica was studied. The LC50 value after 48 hours from Del-fin treatment was 5.2 x 104 S.U. this value was 72 p.p.m., 24 hours af­ter treatment of Consult. A negative relationship was found between the applied concentration of Delfin, Consult and LT50 values where it short­ened by increase of applied concentrations. A program was followed in the field on (16 experimental plots) of early maize cultivation of 1998 and 1999 maize season that received 3 treatments and control of 4 rep­licates each. The treatments were Delfin + 1% NaCI, Delfin (0 525 kg / feddan) and Consult (200 mt / fedden). All treatments were applied 20 days after sowing. Such treatments induced % reductions in the num­bers of perforated leaves due to S. cretica larval feeding by 66.51, 64.74 and 42.59 % In 1998 and by 38.84, 26.85 and 28.51 % in 1999 for the three treatments, respectively. In addition reduced the mean lar­val counts /10 infested plants and caused % reduction than control by 47.39, 40.62 and 21.88 % in 1998 and by 27.01, 20.11 and 13.79 % in 1999 for the three treatments, respectively. Spraying maize by Delfin or Delfin + 1% NaCI had no effect on parasitization of Platytelenomus hy­las (an egg parasitoid) or on Apanteles sp., Bracon breyicornis and Mete­orus rubens (three larval parasitoids). Consult treatment caused signifi­cant reduction in the percentages of parasitism by P. hylas and also no parasitized S. cretica larvae was detected in this treatment.
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