Bible Verses About Agriculture or Farming: Operations in Manuring

For in this mountain shall the hand of the LORD rest, and Moab shall be trodden down under him, even as straw is trodden down for the dunghill.

Salt is good: but if the salt have lost his savour, wherewith shall it be seasoned?

It is neither fit for the land, nor yet for the dunghill; but men cast it out. He that hath ears to hear, let him hear.