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.
With a decline in fossil fuel supply (inevitable in the medium to long term) the attention will switch to renewable sources for on-farm fuel use and to renewable and/or nuclear for off-farm electricity generation. The renewable fuel that is most likely to be suitable for use in tractors and other self-propelled machines is esterified oil from oilseeds.

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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.
With a decline in fossil fuel supply (inevitable in the medium to long term) the attention will switch to renewable sources for on-farm fuel use and to renewable and/or nuclear for off-farm electricity generation. The renewable fuel that is most likely to be suitable for use in tractors and other self-propelled machines is esterified oil from oilseeds.

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