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.
State farms in centrally planned economies could also participate where beneficial tenancy arrangements can be incorporated. While such or related arrangements are being put in place, the transference of food surpluses as food aid to regions in need will continue for quite some time. Special care needs to be taken that such measures are complementary to, rather than in conflict with, local policies designed to enhance food security.

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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.
State farms in centrally planned economies could also participate where beneficial tenancy arrangements can be incorporated. While such or related arrangements are being put in place, the transference of food surpluses as food aid to regions in need will continue for quite some time. Special care needs to be taken that such measures are complementary to, rather than in conflict with, local policies designed to enhance food security.

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