farming is too easy even with the single-use megaprojects required to irrigate.
Maybe dwarves with buckets can only wet a single tile per trip, requiring numerous trips to water a small plot...but that seems too easy compared to true irrigation though.
I'd love to see farming require water continuously, or at least seasonally ...when it is not raining....so depending on dry/wetness of climate... local plants would grow best still, in dry locations those requiring more wetness would need extra.
The single irrigate/dry/build cycle is just not satisfactory, it needs Moah Complexifiering!
Oooh!
Also 'rice paddies' of muckybulbs, growing only in a layer of 1/7 water all year round!
More also: mushrooms use a different type of fertilizer than plants (certain salts): manure and plant detritus, mushrooms actually create the nutrients plants need from this stuff.
If plants create detritus, dwarves could buy this from humans, turn it into humus in mushroom farms and sell it again to humans who use it to fertilize their surface crops and make prickleberries+detritus(vegitable).
I'd guess that evil mushrooms need detritus(animal) or even [blood]!
But this is all suggestion material, not actual farming experience.
I'm fed up with studying for today, I'm installing this artefact code.