Troll, something's wrong with your saves where people won't plant crops, and no one will dump items that are on other z- levels. No idea if you know what's up. Only thing I can't plant is plump helmets, so something's broken with them, the dwarf will get the job 'Plant Seeds' but switch back to 'No Job' very quickly, they're able to plant everything else i've tested it.
EDIT: copied plump raws from different save and it fixed, but sadly the graphics are locked to whatever tileset you use, and trying to change it says it would corrupt the save
Okay, that's weird. My apologies. I guess I didn't remember when I changed them correctly?
See, at one point, I desperately wanted some seeds I had destroyed (spelt, oat) so I changed plump helmets to produce various seeds instead of spawn when brewed, 'cause no traders could make it. I hate plump helmets, so never tried planting them again. I thought I reversed it but something must have gone wrong. Just replacing plant_standard should fix that, but yeah, sorry.
No tileset was used though, so that's just weird. Those were the only "mods".
Edit: maybe you should just replace the raws folder, cause I played vanilla df, so it shouldn't break anything, but I did the aforementioned by hand so who knows if I made a typo. Will do for my own save later too.