IUFRO rating system compares favourably to weight loss for soil-bed testing

IRG/WP 2343

P I Morris

The soil-bed/small stake test is commonly used for rapidly evaluating the performance of new, more environmentally acceptable, preservatives. In a 1.5 year experiment with three copper-based waterborne preservatives, visual evaluation and probing using the IUFRO performance rating scale (0-4) gave very similar toxic thresholds to those derived from measurement of weight loss at the end of the experiment. Visual evaluation therefore appears to be a reliable indicator for comparing the performance of these copper-based waterborne preservatives. However, caution should be exercised in interpreting performance rating data as the stakes approach failure.


Keywords: ACA; ACQ; IUFRO RATING SYSTEM; PERFORMANCE SCALE; WEIGHT LOSS; CCA; SOIL BED TEST; STAKELETS; WATER-BORNE PRESERVATIVES

Conference: 90-05-13/18 Rotorua, New Zealand


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