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

Part of Kentucky Agricultural Experiment Station

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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