CODLIN MOTH.

Dominion, Volume 4, Issue 936, 1 October 1910, Page 8

CODLIN MOTH.

•WHEN TO SPRA.Y. ■'. On. tile, important matter;'of spraying •for. .codlin •moth;-'. Professor C.-P.-Gilletto, of Colorado, .writes:—-.'. I •The most important v of;. all' the Sprays •for the control ,of thi codlin-moUi is that ;made just'- after;, tlio- blossoms have' fallen;'arid'.Before-''.the'-calyx-" lobes have closcd. The reason'that it is so important, ip msiko a thorough' application at this . time is. because, oh-an average, about.' 80 pcr ■ cent.-of tho .worms for the year try : to. enter ;thp. apple at -the calyx or. blossom end. . It' the -poison can bo placed in .'.the blossom .before it closes, it remains •there to ; catilir the ',Bb"per. ■ cent: of - -.the first brocd. In; doing ihi.s tho ;.second brood' -is- : also;'lessened by SO per cent. .Th'o poison tKeii;remams Within tho calyx ;to.-kdll .SO v peri^ent. : of ; the. 20. per cent., of.-: the '.second ■- brood ;'t}iat • was lei'!,. It .is' ■aIM-;imp'M.taiitj'iTj.eoausev if the poison' is' not applied Tjefoi'e ;the I :calyx, closes, the SO per cent. of. [worms that enter at' the ,^yx; ; then; have"; free": access ,to: the : apple without .danger, of being poisoned, and no; amount'-of,:spraying':afterwards: can; get; •them. -So, . after all, tlio .'best time; to;' poison' .the;. worms- thatv'aje; to enter the >apples: at "the, "calyxis iat (*theti»io of :the -;flr«i jtreatment, l the blossoms have nearly all;,-fallen: frwn -the' trees. .: In order to- get the' 'results it isnecessary that :this;,'.first ' treatment :be ■ madevery, thorough, -By..a;thorough 'treatment ; is; m'eant'.one that will, fill.'practically! aill, the calyx ;C'up3"\Htli ; tlie poisonous spray.. •'lll order 'Jar do "this," large. trees .will. quire anywhere from G ; to 12 gallons of i SEW.;:.'The'' rthe;^larger quantityVit;.' Will'irequiro.. ;to,. thoroughly. :treat" tie treesV'VjThe; .'spray, however; should be ooarse!; enough to. have > i*ood' i ,ippsy6r/i;»" I ');h'at i :'it''--^;.tt.-dnven' : into ..the'bfesoms;;iipon all 'parts of the ■tree/'/ While'omaking;' this. first, application: someone.Srho'isdn'ectingtho spray should. , the'-Wos-i soms on all - parts, of a " tree j ust ; sprayed' ■for 'the purpose of ydetermining or.' not the:-liquid -Jis;being deposited- in ;aU ,'the: blossoms.'; ; : AhV' : man,.oan : test; his work. from, time.jfo time;in : this way if no chosas, -' and:, so,: bo' able to know .positively whether : or not ; ; thejrork: ; is. being * thoi- ; oughly. done.:Avoid'; throwingiJaVlarge : amount of the spray.: directly .upon'; the trunks 5 and' large; limbs' of' ithe . toe&JVbecau'se'Vw'ien 'done_: the.;;jwi^n;:is::.'ca.med,-down , about■ the ;crown, {where; : :haririi[,:.pois6ning,V: the v ; crown : ql:; theuree. itself;-; is 'very thoroughly■• done;:' I^do^n^.ibfelieve: it is worth ".w-hile ;;tb.' s6ray;;'again, : until: 'about' four 'weeks after the .blossoms'hare : fallen,' ■which y ; will"V,-l>o.V-..'approximately ! - the .'date, when/the 'eggs>'of itfo :fiwl.:broM; ; hatch. A treatment at ! tliis: time should be' made with a :very: fine spray, ■so di-: ';rMtcd-as:lightly--/to,coveHall;.parts' of'the. •friiit-.iand .'foli^e'tovjMiMn'^those,worms that enter - at-, tho ' Sides'of..the apples. With/'these 'first - two: treatments; thoroughly. ,'made^>as'-'above, . described, 'the writer ; believes' that ;.we have , tho best 'po'ssible":'coridition:for-i the; .destruction'; of tho worms of the first : 'brood. If : the, v wornis.;of ) ! .tb.isVfirst brood" arp practically . all; very!', .slight,-second brocd'ualess the; moths.' for' :.tKe. secoid.'brood, ;of '.Worms- fly-' ; iiito : : , tho: o'rohard: : {from'; the i.OTiTounding" ..orchards' that have not been properly treated. '.'• •