The effect of grape vine cultivars on Lobesia botrana (Lepidoptera: Tortricidae) population levels

Rakefet Sharon, Tirtza Zahavi, Victoria Soroker, Ally R. Harari

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

The European vine moth Lobesia botrana Denis & Schiff. (Lepidoptera: Tortricidae) is a key pest in the vineyards of Israel and Europe. Traps baited with the female sex pheromone are commonly used to monitor the pest population. However, the role of the vine cultivars on monitoring the moth population using pheromone-baited traps was not yet studied. The present study aimed to identify the effect of grape cultivars on L. botrana adult distribution patterns in the field, in order to achieve a better understanding of the monitored data in respect to male and female's host preference. The 3-year study in commercial vineyards used four cultivars: Carignan, Emerald Riesling, French Colombard, and Cabernet Sauvignon. The moth population of each generation was estimated from male counts in pheromone traps; three generations were observed in all experimental orchards, each year. Female host choice was studied by monitoring freshly deposited eggs and newly hatched larvae on vines. The study showed a significant effect of cultivar on numbers of trapped males in most years, and a cultivar effect on female host choice. For both males and females and for all phenological stages of the grapes, Carignan and French Colombard attracted the most and Cabernet Sauvignon the fewest specimens. The results show that cultivar blend within the vineyard can affect the distribution pattern of the pest. Knowledge of the expected choice of the female moth, and of the timing of its decision could lead to an improved monitoring system, with the preferred cultivar as an indicator.

Original languageEnglish
Pages (from-to)187-193
Number of pages7
JournalJournal of Pest Science
Volume82
Issue number2
DOIs
StatePublished - 1 Jan 2009

Keywords

  • Cultivar effects
  • Field distribution
  • Grape cultivar
  • Grape vine
  • Lobesia botrana
  • Monitoring method
  • Moth choice
  • Phenological stages
  • Pheromone
  • Population monitoring
  • Vineyards

ASJC Scopus subject areas

  • Agronomy and Crop Science

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