mods.shadowfacts.net/_articles/shadowtweaks/crops.md

layout	title	date	mod	mod-name
article	Crops	2016-10-23 10:17:42 -0400	shadowtweaks	ShadowTweaks

The only function of the crops feature is to allow right-clicking fully grown crop blocks to harvest them. Whenever a fully grown crop is right-clicked, several things will occur:

1. The block will be harvested, causing the drops to spawn.
2. One of the "seeds" for the block will be removed from the drops list.

This functionality only works with registered crop blocks, these include Wheat, Carrots, Potatoes, and Nether Warts. It is left up to other mods to register their own crops.