We have a large number of "permanent" plots in Hawaii, and would be pleased to provide information on them for your TROPIS database. The Hawaii trials are listed as "Statewide Energy Trials" (SET), and were started in the 60's. They are hardly "permanent", as many are focussed on short-rotation management and disposed of in a few years. However, all involve perennial nitrogen-fixing trees of long duration, notably in genera Leucaena and Acacia. James L. Brewbaker, Prof. Hort., U Hawaii, 3190 Maile Way, Honolulu, HI 96822
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