New Phylloxera Cases Detected in Tegueste, Tenerife
The municipality of Tegueste on Tenerife has reported two new positive cases of phylloxera, a significant development in the ongoing monitoring of this pest. This situation raises concerns among local agricultural authorities and vineyard owners, as phylloxera poses a serious threat to grapevines, which are vital to the region’s economy and cultural heritage.
Details of the Recent Findings
Technicians from the Department of Agriculture, Livestock, Fisheries, and Food Sovereignty of the Canary Islands Government identified these cases a few months ago at Finca Los Zamoranos and another location above the road leading from Las Canteras to Tegueste. The swift action taken following the detection involved the immediate removal and destruction of the affected plants to prevent further spread of the pest. This proactive measure is crucial in managing the impact of phylloxera, which can devastate vineyards if left unchecked. The findings have been included in the updated phylloxera map since mid-October to November, providing a clear overview of the current situation and helping guide future monitoring efforts.
Survey Insights and Statistics
Recent data reveals that a total of 7,769 surveys have been conducted across the Canary Islands, with an impressive 7,680 sites confirmed as free from phylloxera. However, 89 locations have tested positive for the pest, highlighting the ongoing risk it poses to local agriculture. Following the emergence of cases in Tenerife, survey efforts have been expanded throughout the islands, with no additional positive cases reported elsewhere so far. Gran Canaria has conducted the second-highest number of surveys, totaling 198, while other islands such as La Palma, Lanzarote, El Hierro, and La Gomera have also participated in the monitoring efforts. This collaborative approach underscores the commitment of the Canary Islands Government to safeguard the region’s agricultural integrity.
Current Status of Phylloxera in the Region
As of late November, the Primary Sector Councillor, Navary Quintero, indicated that while the presence of phylloxera is under control, it has not been completely eradicated. The number of positive cases has increased from 86 to 89, a slight rise that emphasizes the need for continued vigilance. Currently, the pest is primarily affecting the leaves of vines, with no root damage reported, which is a somewhat reassuring sign for local growers. In response to the situation, local authorities are evaluating the adaptability of traditional grape varieties to phylloxera-resistant rootstocks. This initiative aims to test the resilience of local varieties against diseases, water stress, and soil conditions, ensuring that the region’s viticulture can withstand future challenges. To support this research, mother stock cuttings of American vines, which are free from soil and biological contaminants, will be sourced to ensure health safety. Additionally, preventive treatment measures have been implemented to safeguard 1,200 hectares in the main Denomination of Origin (DOP) areas on the island, reflecting a comprehensive strategy to protect the local wine industry.
Key points
- Two new positive cases of phylloxera have been identified in Tegueste, Tenerife.
- The affected plants were removed and destroyed following detection.
- A total of 7,769 surveys have been conducted across the Canary Islands.
- 89 locations have tested positive for phylloxera, with 7,680 confirmed as free of the pest.
- Gran Canaria has the second-highest number of surveys conducted, totaling 198.
- The presence of phylloxera is under control, with no root damage reported.
- Local grape varieties are being assessed for adaptability to resistant rootstocks.
