Biological Control: A Sustainable Approach to Pest Management in European Greenhouses

As the agricultural season begins in early October, farmers in southern Spain are set to release approximately 30 billion beneficial insects and mites into their solar greenhouses. This innovative practice, known as Biological Control, is aimed at managing pests that threaten crops while promoting environmental sustainability and biodiversity.

The Role of Beneficial Insects and Mites

In the regions of Almeria and the coast of Granada, where a significant portion of Europe’s winter horticultural products, such as peppers, tomatoes, aubergines, cucumbers, and courgettes, are cultivated, these tiny creatures play a crucial role. They act as natural predators to pests and also assist in pollinating flowers, thereby enhancing the overall quality of the produce.

This method of pest control marks a significant shift from traditional agricultural practices that heavily rely on chemical pesticides. By adopting Biological Control, farmers are not only improving the health of their crops but also aligning with the growing consumer demand for sustainable and environmentally friendly food production.

A Milestone in Sustainable Agriculture

The scale of this initiative is remarkable, with around 30 billion insects and mites being released across 25,000 hectares of solar greenhouses, making it the largest area globally employing this eco-friendly technique. This approach is particularly important as it caters to a market of approximately 500 million consumers across Europe, who are increasingly prioritising health and sustainability in their purchasing decisions.

According to a study by Capgemini, 79% of consumers are altering their buying habits based on sustainability criteria, underscoring the importance of such agricultural practices in meeting market demands.

Integrated Pest Management Strategies

Integrated production techniques are employed alongside Biological Control, combining various pest management strategies. These include the introduction of physical barriers, such as double doors at greenhouse entrances, insect screens on windows, and the use of insect traps. The goal is to maintain pest populations at levels that do not harm crops, ensuring a healthier yield for consumers.

For the current season, integrated pest control will be implemented on 99% of the area dedicated to pepper cultivation, with significant adoption rates for other crops as well: 73% for aubergines, 70% for cucumbers, 60% for tomatoes, and 16% for courgettes. This widespread adoption highlights the effectiveness of Biological Control in enhancing crop quality.

Future Developments: Entomohotels

Building on the success of introducing beneficial insects and mites, farmers are now exploring the concept of “entomohotels.” This initiative involves creating perimeter hedges of native flora around greenhouses and constructing shelters for these beneficial organisms. The dual purpose of this project is to establish a natural barrier against pests and to reduce the visual impact of plastic structures commonly used in greenhouse farming.

Conclusion

The implementation of Biological Control in southern Spain’s solar greenhouses represents a significant advancement in sustainable agricultural practices. By harnessing the power of nature to combat pests, farmers are not only improving the quality of their produce but also contributing to a more sustainable food system. As consumer preferences continue to evolve towards sustainability, such innovative practices will be essential in meeting the demands of the market while protecting the environment.

This initiative is part of the CuTE-SOLAR programme, co-financed by the EU, which aims to promote awareness of the unique agricultural production methods in the EU, particularly in the context of fruit and vegetable cultivation. The programme is set to run until 2022 and involves collaboration between various agricultural associations across Europe.