Turtles, however, have no problem with goo, as any Eastman and Laird fan will know.
I'm sure there's a nice easy auto wheat farm program here somewhere, but here is my version. Solving problems myself is the whole point of ComputerCraft to me anyway.
Set up with Seeds, Bonemeal (or Sulfur Goo), and Wheat in that order, actually I don't think the Wheat is necessary. Bonemeal or Sulfur Goo is fetched from the chest in front of the turtle, and all Wheat and all surplus Seeds greater than 64 are deposited in the chest above.
http://pastebin.com/5kAt175V
pastebin get 5kAt175V farm
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Here's my set up including the Sulfur Goo farm, I need more torches for it.
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*Edit* Made the refill more efficient by reversing the slot scan orderHm, I just let it run to a full inventory for the first time and it seems to quit at that point. Should be fairly simple to fix...
And I'm not entirely happy that I have the same condition on two While loops, I'll see if I can do something about that...
There, that's fixed the loop, it should now run on until the inventory is full of wheat and seeds, and then dump everything into the chest and start over.
It does more sorting than it needs to. Sorting is fairly quick now though.