The act of farming draws nutrients from the soil. If the nutrients are not returned, the soil will become depleted and lose productivity. One of the best ways to restore the soil is to recycle what was removed from it by spreading manure on it. This International Harvester Manure Spreader made a dirty job not-so-dirty.
Caring for the Land: Forgotten – Then Re-discovered
To the Europeans who settled colonial America, the availability of land seemed limitless. Farmers paid little attention to caring for the soil, quickly abandoning the fertilizing activities they had practiced in Europe. These farmers felt it more cost effective to simply move on to new land when the soil lost productivity, rather than put in the effort to restore its fertility.