The rise of plant protection drones has revolutionized agricultural spraying, offering precision, speed, and reduced labor. However, the effectiveness of these aerial applications hinges heavily on proper pesticide mixing. Incorrect preparation can lead to nozzle clogging, uneven coverage, or even crop damage. Here are essential notes for drone operators.

1. Always Use Clean Water
Start with clean, sediment-free water. Dirty water can block fine nozzles and reduce the efficacy of pesticides. Use a dedicated mixing tank with a filter—ideally a 100-mesh screen—to catch impurities before they enter the drone’s tank.

2. Follow the “Thin-to-Thick” Mixing Order
For wettable powders (WP), soluble powders (SP), suspension concentrates (SC), and emulsifiable concentrates (EC), mix in a specific sequence. Begin with the most soluble formulation first, then add SC, and finally EC – stirring continuously. This prevents clumping and ensures a homogeneous solution.

3. Mind the Concentration & Volume
Drones have smaller tanks (typically 10–50 L) compared to ground sprayers. Calculate the required pesticide amount per hectare, then scale down precisely for the drone’s tank volume. Overdosing can cause phytotoxicity; underdosing reduces control. Always calibrate the flow rate and nozzle size for your specific drone model.

4. Use Adjuvants Carefully
Adjuvants (spreaders, stickers, drift reducers) improve droplet adhesion and penetration. However, they must be compatible with your pesticide. Perform a small jar test before full mixing to check for separation, precipitation, or flocculation.

5. Avoid Tank Mixing Incompatibilities
Never mix copper-based fungicides with sulfonylurea herbicides or organophosphates without a compatibility test. Incompatible mixes can form gels or solid particles that clog pumps and nozzles, causing uneven spray and even motor failure.

6. Filter & Prepare Immediately
Mix pesticides right before the flight. Prolonged standing can cause sedimentation. After mixing, pour through a fine mesh into the drone tank. Also, clean the entire system thoroughly after each use to prevent corrosion and residue buildup.

7. Environmental Considerations
Avoid mixing on windy days or near open water sources to prevent drift and runoff. Drone spraying is optimal with light winds (2–5 m/s) and low humidity.

For more detailed guidance on drone specifications, mixing tanks, and compatible nozzle systems, visit the official site of UFLYSTAR – a leading provider of agricultural drone technology and accessories.

Conclusion
Proper pesticide mixing is not just a routine – it’s a science. By following these notes, you enhance spray efficiency, protect crops, and prolong the life of your plant protection drone. Always prioritize safety and precision.