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4 > Image 4 of Kentucky fruit notes, vol. 2, No. 10, February 1945

Part of Kentucky Agricultural Experiment Station

i ` their productivity so long and usual- C()l)l_,lN(} MOTH IN 1944 laaaeed replacing every five or six P. O. hrrciihh lh"additioh to also hart ot the The worst codling moth in years, .l. decrease in two or three of the years that s ttm 'Y most .`st" KC` t ii , oah he attributed to a rleoitlori rlo_ tucky, southern Illinois, and Indiana "v Heiency in the amount of rainfall. *ml" g""`s sum Vp th" mst Raspberries are shallow rooted ahrl season. By almost continuous spray- ._ C are seriously alfected if ample mt- Cvch atttt` thc usual 5PmY Zhi. moisture is hot available. The ma_ schedule was completed, some grow- lp_ hure mulch is hot ohly helhtul ih ers came through with very clean B22 supplying hutriehts hut aids ih the crops. Others who were less for- t tig retention of moisture as well as to ttmstc OF Stvpecd spraying tw stmh l help maihtaih a lower soil tem_ lost their entire crop. In eastern t_ herature that is so heheheial to Kentucky, inthe hill country where liu rashherries codling moth has never been much U Pruning or Cane Thinning; Dm-- of a problem, commercial growerr Sth ihg the years ot 1938 ahd 1939 areas came through with another fine it;] were selected in each of the rows CVOP Of high Quality {Wit- _ lil to test the effect Ot Cahe thlhhlhg _The season of 1944 started with a . on yields. Fifty-foot strips were big {1`1`Y0\'21` of W01`mS_ and ih01` tit. Selected ih tvhlch the row was hai-_ was little winter mortality. Warm Cm l-owed to tltteeh lht-hes ahcl he weather the latter half ot May was f oahes were removed Th other oom_ ideal for codling moth, causing them ' parable fifty-foot lengths, the rows tv mI`g ih UhPi`(thtd hhhh sitl were narrowed to fifteen inches and bers Over 3 short psrmd Of tm` lm the canes in the row thinned so that DQ? tt) _th h0t dry 'Cs*thCt` P" DT there remaihed ohly ten oahes tor vailing into September, the heavy he Each four feet Ot rah-_ The yields first brood attack was followed _1n L at uhder these tests are giveh lh July and August by still heavier __ '. Table lT_ The tivo year average second and third-broods. Growers - mt shows 245 crates where the canes Culd see more and more 'O"s ei} were thinned out in the row and hlttmg the apples ~?"*`Y (MY almost . lh 310 crates per acre where no thin- up to hsl"st_ tt`m long sttst tho ar - ning was done. In every case, there <>rm1 sprsymg season was OVC" was a sighitioahtly higher average and many continued to spray. Where ug yield where no canes were removed lcsd stscnsts ptogwms WCW uscd ot from the mw. it should be men- the dry wsathw Ssemstl t0 1`<*d.< tioned in this connection that during the t<>>ty Of the S1 d<-=r><2StS ,,, these two years the moisture supply m,d ther? was mm? OY less tOhGg` Sl, was plentiful and the yields from ?Jut`Y Ftxed mt.m0.and .summ" lll all plots were exceptionally hlgh_ oil were more eilective, it more Tl expensive, but supplies were scarce i Ol Table II by the middle of the sason. H lgggqggg Yields The Kentuclhy Spray Service, co- _ ra - operating wit spray services in RaSpbcrry_Clm Thmnmg TcSt"`In neighboring states was on the job 24 Fmt Crates Per Acre again in 1944 and warned Kentucky li. I "r*W" V "m* VAN HTM growers of the serious codling moth it Ave. of attack in prospect. It is felt that l938& these warnings were especially 1938 1939 1939 vall/uablle this season. h b lg _`"_"_*`_-_" WT '''' " uc time an thoug t will c Catlglsuggtalincd 240 251 245 spent this winter, wherever apple Camas Not men get together, on what to do (Un runaai aio soo aio about codling moth; and there will p ' be a great deal of interest in im- """""T`TA""""'4""`"T""'" ' proved spray schedules and new y l) It is seen from Table II that severe materials such as DDT. Many will t _' cane thinning sharply reduces the spend more time this winter on ? s yield. On the other hand, where scraping trees, screening packing all canes are left the berries are sheds, and other sanitary measures. F smaller and a severe strain on the There is one ray of hope, at any < U plants results. A practice in be- rate1945 certainly cannot be any Q t tween these two extremes would worse than 1944. Too, we are over- g Q likely give the best long-time re- due for a season when the weather _% ; sults. is unfavorable for codling moth. 4 1