Degree‐days requirements for predicting emergence and flight of the codling moth Cydia pomonella (L.) (Lep., Olethreutidae)
Author:
- 12 January 1988
- journal article
- research article
- Published by Wiley in Journal of Applied Entomology
- Vol. 106 (1-5) , 345-349
Abstract
Emergence and seasonal flight of codling moth, Cydia pomonella (L.), were monitored by trapping males in sticky traps from 1983 to 1986 in central Iraq, and corresponding degree‐days (DD) accumulations were determined. Data of moth catches revealed that, the flight in two regions (Tarmiya and Madain), peaked from late March to mid‐April, mid‐May to late May and late June to late July. First insect capture ranged from 1 to 19 March, and corresponded to a mean DD accumulation from 1 January of 195 in Tarmiya and 215 in Madain. These results provided information needed for timing spray application to control codling moth.Zusammenfassung: Grad‐Tage‐Summen als Grundlage zur Vorhersage der Schlüpf‐ und Flugzeit des Apfelwicklers, Cydia pomonella (L.) (Lep., Olethreutidae)Die Schlüpf‐ und Flugzeit von Cydia pomonella wurden mittels Fang der männlichen Falter in Leimfallen von 1983 bis 1986 im Zentral‐Irak untersucht. Die zugehörigen Grad‐Tage‐Summen wurden bestimmt. Die Ergebnisse zeigen, daß der Flug des Wicklers in den zwei Testregionen (Tarmiya und Madain) 3× kulminierte: Ende März‐Mitte April, Mitte Mai‐Ende Mai sowie Ende Juni‐Ende Juli. Die ersten Falter wurden zwischen dem 1. und 19. März gefangen, was einer mittleren Grad‐Tage‐Summe ab 1. Januar von 195 in Tarmiya und 215 in Madain entsprach. Die Ergebnisse können zur zeitlichen Organisation der Bekämpfungsmaßnahmen gegen den Apfelwickler verwendet werden.Keywords
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