Reason for adding Callisto to pesticide program?

Why did the field man suggest Callisto?

What tank mix did the field man suggest?



What was the source of verification that the tank mix was safe?

Had a jar test ever been  performed on the particular tank mix?
Video of jar test.
https://www.youtube.com/watch?v=XoXCEa1GO6s


If so by whom?

It is common practice to test any new tank mixes for safety to the crop by spraying a small area first.


Once crop damage was noted there is a specific protocol for ascertaining what the cause is.
This procedure is documented in
https://www.dropbox.com/preview/Shared/Raspberry/Pesticide%20Application%20Procedures/how_to_diagnose_pesticide_damage.html?role=personal


Additional information desired.
Actual toxicity tests regarding red raspberry.
Ideally these should be performed on the variety specific to the grower, in this case Meeker.
These tests are normal for establishing the amount of chemical the crop can withstand.
The tests normally establish rates of application for
100 pct damage
50 pct damage
and no damage.