Question of compatibility: combining botanical garlic extract and entomopathogenic nematode as integrated biological control for vine weevil

Fezza, E., Roberts, J.M., Bruce, T.J.A., Walsh, L.E., Gaffney, M.T. and Pope, T.W. (2025) Question of compatibility: combining botanical garlic extract and entomopathogenic nematode as integrated biological control for vine weevil. Biocontrol Science and Technology, 36 (1). pp. 122-127. ISSN 0958-3157

Text Fezza, E. A Question of Compatibility AAM 1 OCR Upload.pdf - Accepted Version Restricted to Repository staff only until 11 November 2026. Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (448kB) | Request a copy

Abstract

This study evaluated the potential of combining the entomopathogenic nematode Steinernema kraussei, commonly used to control vine weevil, with a garlic extract-based bioinsecticide(Pitcher GR®). Steinernema kraussei survival was reduced in the presence of Pitcher GR®, decreasing from 5,280 ± 398 on Day 1–1,280 ± 196 by Day 21 in laboratory conditions. Under glasshouse conditions, the nematode alone reduced mean larval numbers to0.6 ± 0.35 compared with 10.6 ± 1.5 in the control, whereas Pitcher GR® alone was ineffective and did not enhance control. These findings highlight the importance of assessing controls compatibility for effective IPM integration.

Item Type:	Article
Keywords:	Botanical bioinsecticide, garlic, EPNs, Steinernema kraussei, integrated pest management, Otiorhynchus sulcatus
Divisions:	Agriculture and Environment (from 1.08.20)
Depositing User:	Mrs Susan Howe
Date Deposited:	19 Jan 2026 17:15
Last Modified:	19 Jan 2026 17:15
URI:	https://hau.repository.guildhe.ac.uk/id/eprint/18303

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