ASSESSMENT THE EFFtCIENCY OF CERTAIN DIFFERENT INSECTICIDES AGAINST BOTH SPINY AND PINK BOLLWORMS ON corros CROP | ||
| Journal of Plant Protection and Pathology | ||
| Article 15, Volume 28, Issue 3, March 2003, Pages 2369-2374 PDF (267.85 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jppp.2003.243278 | ||
| Author | ||
| Fayza H. Sharaf, | ||
| Plant Protection Research Institute, Agricultural Research Centp.r, Dokki, Giza Egypt | ||
| Abstract | ||
| Three sprays of certain different insecticides were carried out to evaluate their efficiency against both pink bollworm Pectinophora gossypiella (Saund.) and the spiny bollworM earias insulana (Boisd.) infesting cotton plants under (ield conditions during 2000 and 2001 seasons. Tested insecticides were (eceiv d from three chemical groups, 4 pyrethroids, 2 organophosphates and one carbamate. The two organophosphales insecticides had the same active ingredient but differ in their formulations. Tested pyrethroids were the most effective which induce the higtlest %reductlon In bollworm~ laNse population during two seasons. fol/owed by earba males then organophosphorus insecticides excepl Oursban ( P) was active than carbamate during 2000 season, Results Indicated Ihal, overall mean percent of reduction in population density of bollworms during 2001 was more cot)1pared to that of 2000 season (or all treatments. The percanl reduction ranged between 42.98 to 77.78% and 59.20 10 83.00% for Bestan (OP) and Fenthrin (Pyreth.) du Ing 2000 and 2001 seasons, respecUlJely. Data Indicated that also two treatments Wilh the same active ingredient of organophosphorus. Dursban induced higher reduction In bollworms populations than with Be$ta". | ||
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