Some additional observations..
I have placed humus on the ground, planted trees manually (even though the multifarm is managed). Trees grow, but the farm won't harvest them. I'm running 4 biogas engines directly connected to the gearbox with golden conductive pipe. The farm is supplied in the correct locations with dirt, water, fertilizer and oak saplings. The fertilizer count continuously decreases 1 about every 2-3 seconds, but the usage bar to the right of it is blank. It never shows that it is being used.
All of this, and the farm simply doesn't seem to be working. The engines come on initially, the pipe shows current for about 10 or so seconds, then goes away and the engines stop as if no MJ is being requested by the farm.