Glad to see this thread revised.
I will leave the BAP to commercial growers. What I try to do to get better increase in my fans is to give the plants plenty of water, lots of sunshine (both items I think are underestimated for creating increase) and also adding fertilizer (I am currently using a combination of Milorganite and 16-4-8 fertilizer) plus lots and lots or organic matter. I like the Milorganite because it has iron and does a good job of giving the foliage a nice green look. The 16-4-8 I use does have some micro nutrients in the blend. I think the organic matter helps condition the soil and attract earth worms and seems to help the overall health of the plants. One other thing that I think is often overlooked and that I have neglected to a large extent over the past several years is pest and disease control. I am trying to do a better job of that this year. I have resisted spraying using it only on a hap hazard basis, but I have witnessed how stressed some of my plants had become because of diseases and pests and decided that I was going to do a more dedicated and scheduled spray routine this year. Not using any expensive chemicals, just off the shelf 3 in one Mite, Disease and Insect control. Very early in the season so far, and one year is nothing to base a success on, but so far the plants do look healthier and greener and are growing very well.