Emerging pest pressures in viticulture: a brief review of Argyrotaenia Ljungiana in Eastern Europe
Abstract
As viticulture faces increasing threats from emerging pests, understanding and dealing with new infestations is crucial. This review arises from the recent detection of an uncommon pest in an area where its presence had not been previously reported. In the Târnave vineyard, Romania, the detection of Argyrotaenia ljungiana, has raised concerns among grape producers. Belonging to the family Tortricidae, Argyrotaenia ljungiana is characterised by light brown forewings with darker lateral bands. Its larvae are pale green with yellowish-brown heads, feeding on grapevine leaves and clusters. Argyrotaenia ljungiana typically has two to three generations per year, with larvae overwintering in the pupal stage within vine bark and debris. This one increases the risk of crop loss alongside existing grape moth pests such as Lobesia botrana and Eupoecilia ambiguella. The moths cause direct damage to grape clusters by larval feeding and create favourable conditions for the spread of Botrytis cinerea. The situation is further complicated by climate change, which can alter pest life cycles and intensify pathogen pressure. To address these challenges, integrated management practices must be refined. Regular monitoring, pheromone-based trapping, and biological controls (e.g., parasitoids) should be combined with targeted chemical interventions only when pest thresholds are exceeded. Enhancing vineyard biodiversity through habitat management, cover crops, and refuges for beneficial insects can strengthen ecosystem resilience. By closely tracking the spread of Argyrotaenia ljungiana and its interactions with existing pests and diseases, growers can adapt their management approaches to sustain grape production while minimising environmental impact. Implementing these strategies is essential to protect grapevine health and ensure the sustainability of grape production under evolving environmental conditions.
DOI:
Publication date: 22/09/2025
Issue: 46th World Congress of Vine and Wine
Type: Short communication
Authors
¹ Research and Development Station for Viticulture and Oenology Blaj, Blaj, Alba County, 2nd Gh. Barițiu Street, 515400