AN ENEMY OF RAGWORT

Sun (Auckland), Volume II, Issue 590, 16 February 1929, Page 27

AN ENEMY OF RAGWORT

DISCOVERY AT CAMBRIDGE (From Our Own Correspondent j CAMBRIDGE, Friday. The discovery has been made that a large plot of ragwort growing on the property of Mr. J. T. Hicks, Maungatautari, near Cambridge, is being killed by moths and caterpillars. These moths are somewhat similar to the codlin moth, but are of a purple colour. The caterpillars are riddling the stalks of the plants, and killing them. Several specimens examined were literally covered with the grubs, and the plants were in a state of decay. Several experts from the Ruakura. Farm visited Maungatautari and have forwarded specimens of the grubs, affected plants, etc., to the Cawthron Institute. The opinion is expressed that in all probability these grubs are identical with those that have been under test at Cawthron, the eggs of which are about to be liberated. Some little doubt is expressed as to whether the seed on the plant attacked by the moth will fertilise. Mr. Hicks is making experiments. It is reported that similar grubs are being discovered in several different parts of the Cambridge district, and it would appear that these natural enemies of the ragwort will be very valuable in helping to cope with the pest.