I've allowed hay to be grown in hydroponics with simple xml edit, because obtaining high quantities of hay is near to impossible on ocean ice sheet and figured out that hay beats rice even in hydroponic tray because:
* needs less micro from farmers - longer growing period
* needs no refrigerated storage
* larger stack size
* larger nutrition per day - 0.169 vs 0.148 of rice
* needs less micro from farmers - longer growing period
* needs no refrigerated storage
* larger stack size
* larger nutrition per day - 0.169 vs 0.148 of rice