Croptosis
Speed up crop production with this mod that revolutionizes farming in Minecraft.
The mod adds four types of fertilizers and special versions of standard blocks - fertilized dirt, farmland, and sand. These enhanced blocks provide twice as fast plant growth compared to regular counterparts.
Creating these blocks is very simple: just right-click on the corresponding block while holding fertilizer.

Variety of Fertilizers
Two types of fertilizers - feather meal and rotten pile - are crafted from feathers and rotten flesh respectively. The other two types - apatite and potash - are obtained through mining. Since these are new ores, you'll need to either create a new world or explore uncharted chunks to find them.

Watering Can - Your Reliable Assistant
Particularly noteworthy is the new watering can, which "fertilizes" plants within a 2-block radius (5-block diameter) from the player's location. This makes maintaining large farms significantly easier and more efficient.
Recipes for various watering cans:

Capabilities Demonstration
Video example of the watering can in action (note: for demonstration purposes, the watering can's power was increased):