How to Measure and Use Delta-T for Better Spraying
Knowing about Delta-T is great, but how do you actually measure and use it?
How to Measure Delta-T
Delta-T is calculated using the formula:
ΔT = Dry Bulb Temperature – Wet Bulb Temperature
This means you need two temperature readings: the dry bulb temperature (normal air temperature) and the wet bulb temperature (temperature influenced by humidity). The difference between these values gives you Delta-T.
Most weather tools like handheld meters, farm weather stations, and even some weather apps can calculate Delta-T automatically. Investing in a reliable weather station ensures that you get accurate, real-time Delta-T data for your farm.
Farmable makes this process even easier by integrating Delta-T calculations into its farm management platform. With just a few taps on a smartphone, farmers can instantly check Delta-T conditions before starting their spray operations.
Using Delta-T for Spraying
- Check the Delta-T range before spraying. If it’s between 2 and 8, conditions are ideal for spraying.
- Adjust your spray timing. If Delta-T is too high, wait for cooler parts of the day (early morning or late afternoon). If too low, allow conditions to dry a little before spraying.
- Modify droplet size. Larger droplets can help when Delta-T is high to reduce evaporation.
- Use additives if needed. Some formulations help sprays stick better in non-ideal conditions.
- Leverage Farmable’s weather tracking tools. This helps ensure accurate and timely spraying decisions while avoiding adverse environmental conditions.
By following these steps, you can maximize the efficiency of your chemical applications, minimize costs, and improve yield quality.