Henry Ward Beecher,
Pleasant Talk About Fruits, Flowers and Farming
“ But if the grain is removed, and nothing resupplies the drain of phosphates which it makes from the soil, the soil will in due time, according to the original quantities in the soil, cease to yield grain, although the straw may be admirable. But if both straw and kernel were every year burned upon the [Pg 150] field, as grass and its seed is upon the prairies, wheat would grow for a thousand years in succession. The same is true of corn, of potatoes, and of any annual crop. When the annual growth is restored to the soil, it is repossessed of all its treasure which had been loaned for a season. ”
