The practice probably cannot be continued indefinitely, however, because of increasing population pressure. The largest quantities of commercial tropical products originate in plantations, where skilled management is combined with sufficient capital to provide mechanized equipment.
Furthermore, the development of sub-soilers to break up soil pans (highly compacted layers of soil interfering with water movement and deep crop root development) would not have been possible without the power capability of the modern tractor. Likewise, the ability to improve soil drainage (in excessively high moisture soils) through tractorized mole drainage systems would not have been possible with animal power alone.

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The practice probably cannot be continued indefinitely, however, because of increasing population pressure. The largest quantities of commercial tropical products originate in plantations, where skilled management is combined with sufficient capital to provide mechanized equipment.
Furthermore, the development of sub-soilers to break up soil pans (highly compacted layers of soil interfering with water movement and deep crop root development) would not have been possible without the power capability of the modern tractor. Likewise, the ability to improve soil drainage (in excessively high moisture soils) through tractorized mole drainage systems would not have been possible with animal power alone.

Source 1 | Source 2 | Source 3

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