You can only do the Forestry fertilizer thing if you have Plug In for Forestry since Multi Farms are "non organic" for whatever stupid reason. In the good old days you could actually Chose what's to use for farming (whether apatite powered farms that were ultra fast or more "organic" which was slower but hey you didn't had to mine to keep a farm going!) It's like the government telling us that we can only farm chemically. That why I'm going MFR when it's comes back out on 1.6.2. (you can goes either way with those farms)
I found that a happy change. And you have so much Apatite that you shouldn't really complain, it's still completly OP. Really, I like Forestry, especially for the Bees/Trees part (without ExtraB&T though), but I hate how OP it is, for the Ethanol should be worth 30 000 EU and the Farms should cost a lot more, especially consumes a lot of stuff more.