I was testing this formulation on one of my big clones under @rflasch guidance - In the greenhouse she and a few others had a mild case of powdery mildew - perfect for the test. I mixed all formulations EXACTLY as guided - the Ph was 3.7 after mixing.
Here is the test plant before any treatments
She had PM on several areas - I would gauge it as a mild case
After a FULL Strength spray of HCO with a very heavy application (about 2.5 ounces of solution sprayed on the plant)
Here she is the next morning - still a little droopy but healthy - The PM spots were still there, but I
wiped the leaves with a moistened cloth… spots disappeared and never reappeared.
Because she was still droopy I decided to wait an extra day before I foliar sprayed anything -
I was particularly interested in what might happen when I sprayed BBP - I no longer foliar spray anything but BBP and IPM
After a heavy dosage of BBP on the test plant the next morning she perked up and all traces of pm were gone -
![image|3It is 3 days later and all pm is gone and the plant is healthy and rebounded.
I purposely oversprayed to give much heavier dosages of both the IPM and BBP - the plant is fine
I decided to test this on an auto that is late in flower that I let grow but she’s a test plant and throwaway so I sprayer her heavy with HCO and then just after with a BBP treatment - Normaly I would not use BBP after 2 weeks in flower but I wanted to see what would happen
This plant had a moderate case of PM as well - here she is the next morning -75x500]
(upload://rChZgkJIyUApi7FFTaYDREb3iXD.jpeg)
NO PM and no Brown Pisltils - @Happilyretired even 2 days later.
the results of the test were successful in identifying an alternative to pm and budrot - it is also most useful in not having oils or other things that could burn delicate pistils in late flower.