Trichocereus potency testing

[pete666]

My experiments were from stress treatments from a foliar (true color) and ethylene gas (both have very similar results).

Now I remember - I read this post some time ago. My memory isn't great.

Do all your cacti get the same amount of sunlight? Your data is really nice and with each new addition really comes together.

Thank you.
Yes, they all get direct sun all day in the same spot. And they grow in a fairly inert medium and receive the same feed at every watering. They get as much water and fertilizer as they can handle, based on the available sun. Overall, the conditions are pretty uniform.