Agricultural commandments today

Many of the commandments in the Torah are agricultural commandments – commandments that depend on the land, the pilgrimage seasons, the four species, the Omer, etc. How are we supposed to relate to this in our day, when almost no one is a farmer?
In exile, I still understand, because we thought that when we returned to the land it would be relevant. But then we returned to the land and no one was a farmer…