| Title: | Mating disruption of pea mothCydia nigricana F. (lepidoptera: Tortricidae) by a repellent blend of sex pheromone and attraction inhibitors |
| Author(s): | Bengtsson M; Karg G; Kirsch PA; Lofqvist J; Sauer A; Witzgall P; |
| Address: | "Department of Plant Protection Sciences, Swedish University of Agricultural Sciences, 223 62, Lund, Sweden" |
| ISSN/ISBN: | 0098-0331 (Print) 0098-0331 (Linking) |
| Abstract: | "Synthetic sex pheromone of the pea mothCydia nigricana, (E,E)-8,10-dodecadien-1-yl acetate (E8,E10-12: Ac), was applied in polyethylene dispensers at a rate of 30 g/ha and 600 dispensers/ha in a 0.6-ha pea field. The release rate ofE8,E10-12: Ac was 140 mg/ha/day after six days, and 82 mg/ha/day after 20 days. Aerial concentrations ofE8,E10-12: Ac, as measured by a portable EAG apparatus, ranged from 2 +/- 2 to 7 +/- 3 ng/m(3). The antennal signal was high and rather constant within pea canopy, but was lower and fluctuated strongly above canopy. Initially, >99% isomerically pureE8,E10-12: Ac was released, and male moths were attracted to dispensers. After nine days, isomeric blend composition had equilibrated to approx. 92%E8,E10-12: Ac and 8% of the inhibitory isomersE,Z-,Z,E-, andZ8,Z10-12: Ac. Males were then repelled from the pheromone-permeated field. Traps baited with 100 microgE8,E10-12: Ac caught 258 +/- 133C. nigricana males/trap in the control, but no males at all in the disruption field" |
| Notes: | "PubMed-not-MEDLINEBengtsson, M Karg, G Kirsch, P A Lofqvist, J Sauer, A Witzgall, P eng 1994/04/01 J Chem Ecol. 1994 Apr; 20(4):871-87. doi: 10.1007/BF02059584" |
