Description
This solution involves collecting data in advance to determine the specific spraying needs of different areas within an arable field. Data collection is typically done using a drone but can also be carried out with a quad bike. Once the data is gathered, a prescription map is generated and used with conventional spraying equipment to apply herbicide only where needed.
Explanation
By tailoring herbicide application to site-specific conditions, this approach can reduce herbicide use by approximately 30% in green fields when cereals are in growth stages DC 11–30. Even greater savings are possible when only weed patches are treated post-harvest, making it an effective and environmentally responsible weed control strategy.
Advantages
• Can reduce herbicide use by up to 30% when applied in green-on-green conditions.
• No significant socio-economic drawbacks identified.
• Does not require high technical skills or major equipment investments from the farmer.
• Positive environmental impact due to reduced herbicide use.
• May also reduce the area treated by the sprayer, lowering fuel and input use.
Drawbacks
• Requires prior data collection to identify variable application zones.
• No major socio-economic drawbacks identified.
• May rely on external service providers (e.g., drone operators), which could limit independence or add cost.
• No direct environmental drawbacks identified.
Technical Aspects
Technical readiness
The technology is relatively mature and available on the market, although practical experience with it in Sweden is still limited.
Ease and efficiency of implementation
The system is generally easy to implement, especially when data collection is outsourced to a service provider. However, farmers must note that herbicides cannot be mixed with fertilizers or plant growth regulators, which may affect the timing of applications.
Need for training and education
While entrepreneurs often handle the technical aspects, it’s important that farmers understand key concepts—such as weed history, herbicide selection, and how to manage and apply prescription files—to ensure effective use.
Need for investments
A sprayer capable of handling application files is required. New equipment can cost between €100,000–200,000, but this can serve multiple purposes on the farm. Alternatively, existing sprayers can be upgraded for a few thousand euros, depending on their current configuration.
Policy Recommendations
Support should include subsidies for equipment, demonstration activities, training and education programs, and incentives for cooperation and knowledge sharing among farmers.