As world population increases there will be a need for more food. If tropical countries are to meet this need, agricultural production must rise. There are large areas of tropical land formerly managed under traditional cropping systems and later abandoned to forest for reasons unrelated to their agricultural potential. This land should be identified and brought back into sustainable agricultural production, as it is: (a) unrecognized as former agricultural land; (b) on undegraded soils; (c) in wetter areas of higher potential for agriculture; (d) threatened with permanent inclusion in the expanding estate of forest and nature reserves.
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