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Monthly Archives: September 2009
Challenging Assumptions: Tractor vs Horse
Taking into account the annual feeds for work horses (1,300 kg of corn grain, 1,600 kg of alfalfa and 500 kg of harvested roughage) and the national yields for these crops during the past decade, they conclude that the 23 million horses would require 9 million hectare of agricultural land for food, or 6 percent [...]
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Cost Of Machines vs Cost Of People