A couple of things I noticed farming:
1) Weeding is done with a shovel. I'd expect the hoe to be used for that, but that tool doesn't seem to have a function, while shovels are used for both digging tree holes and weeding.
2) In the above screenshot Gary is the bot indicated with the white square. While there is a last weed within his red circle work area, he's not able to find it, apparently.
3) Once fertilizer is applied to Weeded Soil, it turns into Soil. No matter how much you plant and harvest from that Soil, it stays Soil, apparently having infinite nutrients and never needing more Fertilizer. So right now we will never need more Fertilizer than there are 'farming plots'. (Hence the bored fertilizer carrier near the windmill). Suggestion: change 'Weeded Soil' to 'Barren Soil', and have Soil turn to Barren Soil after a couple of harvests.
4) When Cereal is fully grown and harvested with the scythe, but not yet picked up, 'seeder' bots will see this plot as Soil again, and try to plant a seed there. The game won't let them until the cereal is picked up, and they will stall. It would be great if they would try to 'Find Soil' that is not blocked by a cereal instead.
5) While technically not wrong, the term 'Cereal' is usually used for processed grains (breakfast cereal, 'cornflakes'). Most people will probably call the stuff that grows on the farm 'Wheat'. I'd also call the 'Cereal Seeder' a 'Wheat Thresher'. A hand tool to do that work is called a 'Flail'.
6) (Not just farming) Storages of the same kind share a resource pool. This allows for a very convenient transport system, instantly teleporting goods from one end of the island to the other by putting resources into one storage and taking it out of another. This just seems like 'spooky action at a distance' to me, though ;)