EFFECT OF WIND DIRECTION AND HANGING LEVEL OF ATTRACTIVE SEPTA PHEROMONE CAPSULES ON BLACK CUTWORM, AGROTIS IPSILON. | ||
| Egyptian Journal of Agricultural Research | ||
| Article 11, Volume 84, Issue 1, January 2006, Pages 89-99 PDF (386.16 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.2006.229638 | ||
| Authors | ||
| RADWAN S. FARAG1; MOHAMED M. MOWFY2; SEKINA S. EMAM2 | ||
| 1Biochemistry Department, Faculty of Agriculture, Cairo University Giza, Egypt | ||
| 2Central Agricultural Pesticides Laboratory, Agricultural Research Center, Ministry of Agriculture, Giza, Egypt | ||
| Abstract | ||
| The present work was carried out to evaluate the residues and catches of Black cutworm pheromones (Attractive septa) of Agrotis ipstion. The pheromone capsules were hanged in three directions of the cotton experimental field (North, South and West) and at three different levels of the cotton plant stems (lower, medium and upper). Gas-liquid chromatographic analysis indicates that the total levels of the pheromone three isomers Z-7 dodecanyl-1-acetate (12 acetate), Z-9 tetradecanyl-1-acetate (14 acetate) and Z-11 hexadecanyl-1-acetate (16acetate) at a ratio of 1:1:2 (w/w/w) decreased much faster after 9, 15, 21 and 27 days from the commencement of the experiment. The loss percentages of the pheromone isomers (87.71 %) were much higher after 27 days from application at the upper hanging level compared with lower and medium levels (69.40 % and 78.14 %, respectively). The maximum loss percentages of pheromone isomers (81.29 %) were found after 27 days from treatment at North direction compared with the unhanging control. The catches of black cutworm males in the North direction were higher than that of the other directions. | ||
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