.b farm supporting row growing.

As many of you know, growing crops in rows is more effective. Having different crops in rows increase the growth rate by around 200%, analysis video by xiumavoid: https://youtu.be/H_YGBL1zKUk (it's old, but the mechanics haven't changed). Demonstation:
C - carrot, P - potato.
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I propose to at least think about implementing something that would play into this. How? Well since I am not on of the _big brains_ I can't really think of anything that wouldn't be obvious.