Planning and droplet size transcript
When planning a spray program, it's important to consider the farm's location, its topography, its size and its proximity to sensitive areas. Setting aside the time to plan a spray program will ensure chemicals are used safely, effectively and responsibly.
It's critical to factor in sensitive areas that might be affected by your spraying and to understand the risks involved. Drainage lines are a particular consideration as cold air flows down slopes and can trap spray and run it off into creeks and rivers.
Correctly calibrating all equipment should also be a planning consideration. Resistance management is critical during planning to ensure that we are rotating our chemical groups.
The general principle is we should try and use the largest droplet size available to us while still maintaining efficacy. Larger droplets will reduce drift, but they may not eliminate it totally. Droplet size requirements will increasingly appear on labels.
If you're using fine droplets, up to 50 per cent of the spray droplets produced will not go to ground under the pull of gravity.
View the Planning and droplet size video.