Fertile, moist, living soil is probably the most important ingredient of a healthy farm. Plants take water and most of the nutrients they need through their roots in the soil.
Good soil is home to millions of organisms: earthworms, fungi, bacteria, nematodes, and more that live, hunt, and die there. Their activities near plant roots help break down essential minerals and nutrients for plants to absorb. Without these creatures, plants would slowly be starved of the essential nutrients they need for survival.
The more alive the soil is, the higher your chances will be of growing very tasty and juicy fruits and vegetables.
Dead soil will produce nothing but dead plants.