You can likely stop buying amf inoculants at that point. Those organisms exist in nature to help plants scavenge Phosphorus from low P soils. For example if you pull a sample from the mountains in the northern cascades you'll see 10ppm elemental P. Having amf infection and increased P uptake is a huge advantage in those soil conditions. The P availability comes at a price and the plant has to pay sugar to the fungus. In 1000ppm P soil the plants won't pay that price because the Phosphorus is more available and they can use that sugar for their own needs. The fungus will still try and infect the plant roots, but I remember reading studies showing that plants will shut them out. The same thing happens to rhizobium bacteria in high N soils.
It all leads back to Peppers with me: doesn't it....
I wish more would add one or a few Xtra Hot Peppers in their grows each cycle. Here's why
1) - They are Ca hogs, even more than Canna, they also show you much earlier, quicker & easier to tell when deficient, like immediately. They are much more finicky to grow and would be / are your Canary
2) - Most time I see people struggling with growing Canna it's because they NEED it to work out, for whatever reason, generally financial... This need, stress, pressure causes most people to make mistakes and then chase those mistakes.
Adding a pepper or two you don't care nearly as much for will teach you a shit ton about over watering, under fertilizing or over fertilizing etc and you'll likely find that pepper plant you're caring less for is doing much better, even though a more finicky plant to grow....
Then the lightbulb will go off and you'll know for sure, the biggest variable, hurdle & obstacle is we, the grower
give it a try - seeing deficiencies in more than one species is also a huge value in identification
I'm going t throw a pepper in my next indoor round just for you, but I know it will quickly be over grown in the grid and its going to be hard for me to sacrifice even 1 square foot. Cool idea.
