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Image 7 of Kentucky fruit notes, vol. 2, No. 4, July 1943

Part of Kentucky Agricultural Experiment Station

TY Plum Curculio Trends rainy summer seasons encouraged In recent years the plum curculio me mg Summer brood has caused considerable damage to coma Cd U; dll? try séaécms en` commercial peach production in in thg_ cadu bsfo remam longer En` Western Kentucky. In most seasons . L gmun . time €m€rg€nc€‘ Sscc the chief Couccm has been with This fact was strikingly brought out un- the carry brood that appcms just at the Princeton emergence cage )pgd · after thc peach petals full in the this year where only 4 to 6 adults Sm' A. spring. In 1941 a heavy second Cm§rg;1ng_ each da? hgweveln Mtn brood also appeared that caused ( a ar lan? on t E mgm of Ex‘ serious loss to the crop at harvest June 24’ twenty-SIX adults emerged and Since that time the Special Horti; g;;thg;ll;;;?§g_ .:ay' thrfhegs was CNY E cultural Program has spent much lax On. Q 8 Ernoon °n*`1' · time on this insect through the spray gircihid Zgjh nan? cslghtegp adurits "§‘{‘“ ’ S€f~ ‘ ice and he mivcd Valuable time gCmQi—gZncZxhaSaEg€¤ LZ$Sp§rZt . `lC i · . _ i ‘ mg ~~ zsgyogingcizijgzft j;rjrmr;g§ra§i;;_ tively All of this lends wi- urcd ` mmorogists ‘ dence to the fact that late curculio Orri_ »r ’ , _ __ damage is apt to be much worse in it to I K;iuc‘;;SF;°u(1n§G?gtCS°L;ty gr *1/gpg] summers where there is heavy rain- wirh Rrrcher there was a Scccmcr bxjoéé fall during late June and early July. ’O*";`l` of curculio adults that appeared in In jarring for Summer adults On { the T late June and early July 1942. These June 28 and 29, large numbers were ijiiis C started egg laying and a month-be- found In Orchnrds near Paducah géivg ~ f0r€_har\,cSr Spray was recommend that have received a heavy early the ` ed in Western Kentucky. Most dmscm Sprny and dust program' AS COm_ 2 peach growers having a crop 8p_ in the spring, the greatest number r re- _ plied this spray and had very little Of adults time {Gun? mt_th€ Oulilde Q injury from these late worms. rows in e same oca ions w ere and j the most early adults had been yild l , fud. As v'dn tht l ` ffrgiig 1943 work and T¤··i·i¤ octitlience-coi·iiei·sGaiii€s in ionirilrldlni Brcau i In Mgyr curculio emergence cagcs grower cleaned out and burned lofi largr. were Sgt up and Stocked \Vith all shrubs and rubbish on one side t and wormy peach drops at Mayfield, of his <>i‘¤ii¤i`d but did ridi clean vii SEQOQ . Paducah, princeton, H€ndO1~s0n_ Bed- a like location on the other side. DS rigs ` f0rd and Lexington. Mature worms Iii SPNUS jarring, CUYCUHO W€Y€ _ imag igartcilr/Iiezgving the drops by May =i}>¤¤di1¤it_§¤ ii;¢1ti·€·est;¤ the ¤_¤;— - an at ay gld d P d } d b c cane si e w ie on e opposi e Basoni June 3 at Lexington in irdntrabl Sidd they Could SC€n`C€lY be found- Kentucky_ Likewise, in late June jarring, sec- ; that In appmximateiy one month may Grid brood curculio were dbwddnt the first worms entered the soil to nnxt to lng uncleancd fence mw 1 this pupgtgr the first adults Of the Second while they were still very scarce on wwnn brood began to emerge. This was nic OPPOSYLC Sid€· cg/Cgi true from Mayfield where the first, In another location near Mayfield, V mom S€C0nd brood curculios emerged on one grower had allowed a great vinter June 17 to Lexington where the first number of pigs to range in his or- Ones came out on July 2. Heavy chard and eat drop peaches during 5*l`;n;g 1`8inS 0VG1` Western Kentucky about the early drop period. A few heavy S . mid-June speeded up the emergence fruiting trees in his yard corner imited prom- of many of these second brood were fenced out of the pig range. adults. It has been known that Many wormy drops could be found 7