Remedial treatment of wood attacked by insects

IRG/WP 3175

H K├╝hne

A review is presented of remedial treatments against wood-boring insects in wood in service. Preconditions and fundamental principles of insect control are compared with the control of fungal attack and reasons are given for the fact that remedial treatments against insects are more commonly applied than against fungi. With regard to insect control measures with a simultaneous preventive effectiveness, information is given on preservatives, control measures as well as on testing the effectiveness of preservatives with eradicant action. An evaluation of 40 tests according to EN 22 or DIN 52164 revealed that a mean depth of effectiveness of 15 mm is obtained at mortality rates of 80-84% of Hylotrupes larvae. At a mortality rate of below 75% the mean depth of effectiveness was about 10 mm and above 90% it was about 27 mm. Among the control measures without any preventive effectiveness fumigation and hot-air treatments are referred to. With regard to biological control measures, practical results are not yet available.


Keywords: INSECTS; REMEDIAL TREATMENTS; NUTRIENTS; FUNGI; INSECTICIDES; TOXIC VALUES; FUMIGATION; HOT AIR TREATMENT; BIOLOGICAL CONTROL; EFFICIENCY; TESTING

Conference: 81-05-11/15 Sarajevo, Yugoslavia


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