Brecher Cultivation adds the Cultivation Chamber block, a special farming block that grows crops automatically. Unlike regular farming, you don't lose your seeds or soil - they stay in the machine and keep producing crops over and over.
(This mod is very similar to Botany Pots, which had not yet been updated to 1.21.1 when I started it.)
The Cultivation Chamber is perfect for automatic farms. Just put dirt and seeds in the machine, and it will keep making wheat, carrots, or any other crop without replanting. Connect hoppers to collect your harvest automatically, and use bone meal on the cultivator to speed things up!