Three different above ground test methods have been utilized at a selection of five tropical and sub-tropical test sites with a variety of treated and untreated material. The results show that a multi-site approach to above ground field tests presents the opportunity for exposure to un-predicted biodeterioration hazards, which may be important for developmental products of poorly characterized fungicidal performance. The results also show that for tests exposed above ground on racks or fences, high climate index sites may benefit from canopy exposures of the samples rather than open field exposures. The Lap-joint test data from this study suggests that this method is a poor choice for providing rapid results even at test sites with high decay hazards

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