CODLIN MOTH

Dominion, Volume 5, Issue 1248, 3 October 1911, Page 8

CODLIN MOTH

MEANS OF EXTERMINATING IT.Tho following treatment for the extermination of codlin moth among apples and pears 'has bseu recommended by tlio South Australian Government, Horticultural Instructor, Mr. G.Quinn:— Scrape o!f all dead and tracked bark from the trees; clean out all knotholes, sawing off broken ends of limbs. Keen all stakes, posts, ami rubbish away from tho trees. Cover up windows of apple stores with the gauze and kill the tioths as they hatch in spring. As soon as the blossoms fall spray all apple, pear, and quinco trees with either arsenate ot lead, Kcdzic's soda-lime arsenate, or Pans green in lime-water, taking care to nil the calyx end of every young fruit. Repeal tlio spraying at intervals of from 7 to It dsiys. 'Place bamlaqe.s of narrow strips of bagging about Bin. wide around the stems or limbs, and fasten them tightly at. the top end with a wire or sharp nails. Examine tho bands once I a week and kill ail codlin caterpillars found under them. Gather all "wormy fruits from the trees and ground 'as often as possible-, and heap them around the tree stem until they can be boiled or crushed or cut up. Don't throw them out in a raw state for animals to feed u'r.on. unless they have been submerged in water for 48 hours. To make arsenate of lead mix not less than lib. of lead i>TS?nate paste of some approved make with 20 gallons of water, it is best liquified in half-gallon of water before being poured into the larger quantity. It needs no admixture of lime-water, but should be agitatsd occasionally whilst sprayins is in progress. If leaves or fruits be scorched, add lib. quicklime. To make arsenate of soda (Kei'zie's formula) take 1 gallon of water. Boil the soda in the water till it dissolves. Then sir in the nreenic, and boil until it dissolves . This usually takes about an /hour. AVhen about io spray add 1 >>int of this mixture to 40 gallons of lime-water, made by slaking and straining not less thaii tilb. fieshly-biirnt quicklime. Keep this mixture constantly stirred whilst spraying. Tho Paris green mixture is made with loz. Paris green and 31b. fresh lime to 10 gallons of water. Slake and strain the lime. "Work the Paris green powder into a smooth paste with some of the strong limewater. Then add to it the remainder, of the )0 gallons of lime-water. Keep it conf.autly stirred when applying, and only "mist" the fruits over lightly; do not drench them. A Gawlor fruit-grower recommends fastening bandages at the top by means of a farrier's noiL He has experimented with string, wire, and other devices, but finds , the nail the most simple-, and effective fastening. Tho injury done to the bark of the trunk is very slight, and the benefits gained aro considerable.