No abstract

The new INSIGHT Skeletal Imaging System can replace the Lanex/T-MAT G FFS by retaining quality but reducing radiation dose by 29-56%. Using the new high intensifying FSC, images showed in addition improved film quality.

Scotch pine (2-2.5 m high) growing in a Christmas tree plantation were chosen for evaluating toxicity of an experimental pyrethroid insecticide against crawlers of the summer (= July) generation. Infested trees with newly hatching crawlers were sprayed 22 Jul, using a KWH mistblower operating at maximum speed to deliver 946 ml of finished spray to each of 4 single-tree replicates/treatment. Ambient temperature was 21°C with partly cloudy skies and 6-8 km/h winds. Settled first instars, crawlers, and eggs were present during spraying. Treatment effectiveness was evaluated 4 Aug by collecting infested needle fascicles and inspecting them with the aid of a binocular microscope in the field for living and dead settled first instars. Counts were made from at least 31 needle fascicles; the first 100 settled nymphs observed were used for analysis.