DEATH TO CODLIN MOTH.
DEADLY WORK OP PARASITE.
GOOD RESULTS AT NELSON. SOON UNNECESSARY TO SPRAY. It may not be necessary before Jong for orchadists to spray their apple trees for its worst pest, tlie eocllin'moth. Dr R. Tillyard of the Crawthorn Institute, Nelson, told an audience at the Canterbury Philosophical Institute that he has imported the parasitic moth, aphilinus, which preyed upon the aphis in a peculiar and deadly way. The female lays between 50 and 100 eggs six times in each year and it inserts the eggs into the aphis itself. Every aphilinus hatched o,ut promptly proceeded to devour the aphis. The speaker imported the parasite two years ago, and this year he was able to send from the Institute 21,000 live specimens. Already the release of specimens in Nelson had effected a great improvement in the area particularly concerned. A consignment had been sent to a Christchurch orchadist, who had reported that his observations showed that, although a certain number of the parasites were killed when the tree was sprayed in the ordinary course for the aphis, others lived.
Dr. Tillyard said he hoped that in time it would not be necessary to spray the trees at all.
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Manawatu Herald, Volume XLV, Issue 2546, 22 February 1923, Page 1
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201DEATH TO CODLIN MOTH. Manawatu Herald, Volume XLV, Issue 2546, 22 February 1923, Page 1
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