Mendoza Allocates 14 Billion Pesos to Protect Vineyards From Grapevine Moth

Mendoza is allocating 14 billion Argentine pesos to its 2026/27 campaign against Lobesia botrana, the grapevine moth that damages vineyards and threatens one of the province’s main economic activities, according to local reports and statements from provincial authorities.

The program is aimed at reducing the presence of the pest across wine-growing areas in the western Argentine province, which is the country’s leading wine producer. Officials said the campaign will combine field monitoring, technical assistance for growers, biological control methods and the distribution of supplies needed to treat affected areas.

Authorities have described the moth as a direct risk to grape production because it attacks grape clusters and can reduce both the volume and quality of the harvest. That damage can then spread through the broader regional economy, where viticulture, winemaking, agricultural services and export activity are closely linked.

The provincial government’s plan calls for the use of newer control technologies and targeted treatments designed to lower dependence on conventional chemical pesticides. Among the measures highlighted by officials are the controlled release of natural enemies of the pest, continuous surveillance of vineyards and training for producers in good agricultural practices.

The effort brings together public agencies, specialized technicians and private-sector growers. Provincial officials said the campaign is intended not only to contain the pest in the short term but also to support longer-term vineyard health and sustainability.

Lobesia botrana has been a recurring concern in Argentine viticulture because of the way it affects grapes during key stages of development. The larvae feed on berries, which can weaken fruit quality and make bunches more vulnerable to secondary problems, including rot. For producers, that can mean lower yields and additional management costs during the growing season.

In Mendoza, where wine production is central to employment and exports, the stakes are high. A broad control campaign can matter well beyond the farm gate. By protecting grape quality and limiting crop losses, the investment could help stabilize supplies for wineries and other businesses tied to the beverage sector, especially those that depend on consistent fruit quality for domestic sales and export markets.

The province said the campaign will rely on regular tracking of pest activity in vineyards so treatments can be applied more precisely. That approach is meant to improve effectiveness while reducing unnecessary applications. Technical support for growers is also a core part of the plan, as many control strategies depend on coordinated action across neighboring properties rather than isolated efforts by individual farms.

Training for producers will focus on practices that help detect the pest early and improve field management. Officials said that work is important because successful control depends on timely responses during the insect’s life cycle. Biological tools are also expected to play a larger role, reflecting a broader push to balance pest control with environmental considerations.

The 14 billion-peso outlay underscores the scale of the challenge for Mendoza, where vineyard protection has become a strategic issue for the province’s agricultural policy. Local authorities have framed the spending as an investment in preserving production capacity and supporting an industry that is closely tied to Mendoza’s national and international position in wine.

The campaign also reflects the extent to which plant health policies have become a shared concern for government and the private sector. Producers face the immediate effects of infestation in the field, while the province has a wider interest in protecting jobs, tax revenue and export performance linked to viticulture.

Officials said the control effort is intended to sustain Mendoza’s standing in quality wine production while limiting the damage caused by the moth in the coming season. The province’s approach, as described in the local report, combines direct intervention in vineyards with technical follow-up and producer support, with the goal of reducing pest pressure before it causes larger losses across the harvest cycle.