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5 > Image 5 of Kentucky fruit notes, vol. 2, No. 10, February 1945

Part of Kentucky Agricultural Experiment Station

MQRE ABOUT DDT ishslibjcct to tempkeratures some} P. O. RTTCHER In-Zug?L` FJfEeEt,%.rr?Ei- There- is a great dcal of interest lnwtng tnhln g1VS S01n_ Qt tht? W ,,1, lllc pall Ol. llult glOw(l-S. m thc fl'lil`ElCtDl`1StlQS of the varieties as . M new male,. l al DDT (dlchlm-O- shown in this planting to date; Q- diphcny_1-tricnlcntocthane>. Interest D To MD DD _ Dm D W is especially keen since lead arsenate Dt #*'-?l" Orange I`; spray schedules did not always give _ Winter Rust p,_ an good control of codl1n_g moth this Va"*>' sigglmc 4Re- ductivity .l- l>HSt ?5C>Y; _nlc0t1nc products _ _ U__ ___5j@ l__ . were rar o o ain. - .. .. , _ . ., In the midwest, the Vincennes j{l?,i:l,lld" l},;"'uQ;ll H, fruit insect laboratory of the Federal l;arly 1larvsr llar-ay Aletlitirxilligll at Bureau af ERt<>m*y amt Plant tiiftttrift tiiiittii {itil} ?2$"" l.l,"i.%"r3ii* *312%.*i;;*"rOf$Li 2* `* l*R:lRt ltr? nk, S ", ' ` Zoysen "en er igi l\Iou-rate in the testing of DDT formulae on L--- . apples. Their published results to _ _ lj _ date indicate that DDT is an effec- In January. 1940 and aeam rn .m tive_spray material for controlling JannYY 1942 this Planting XPt`1; .3% codling moth when used at the rate Gnced tnPY&ti`$ af between 10 Ol al to ll pounds Of DDT pal- lgg and 20 below zero and on these DP gallons Of spl-ay_ There was H Con- occasions all of the canes of the_ va- 50 Sldpyable bulldmp, howcvcly in the rieties listed as tender were killed .j _ mite and red spider populations on to the around With 1`$n1t3nt total V`, DDT-sprayed trees and some un- loss of crops. The varieties listed il, xpljained leaf drop on Grimes hgrly ligjclssogg clap? tgpagllgng; . O EH. \. '*l`, y _ Mr. Steiner`s results, while prornis- effect their fruitfulness. The pros- hlg mg, do not_give us much hope that trate canes of the Boysen and xl _ even by using DDT wc can reduce Y0L1ng $`1`1t1$. often 13$S@ 35 he the number of sprays needed, Also, dewberries, have also been winter gl. _ growers who do not use enough killed when no sub-zero weather ,1.6 l material or do not get good cover- was experienced, even when having md age, cannot_ expect DDT or any a straw mulch covering. These me other material to give good control, var1et1es have produc_ed a satisfac- its Before DDT lS put on the open tory harvest only during the spring IEC market there will have to be a con- of l94l and cannot be COHS1d1`Qd as ml. siderable surplus over and above reliable in this section for etther We 7 that needed by the armed forces. home or commercial production. VCU Too, there is much work to be done The Brainerd seems less tender than on DDT before it can be put up in the last two named varieties but CO_ a usable standard form by manu- has_ frequently lost so much of its in facturers. There _ are also many fruiting wood from winter injury lol) - QL1St10nS Concernmg DDTs effect that it cannot be depended upon ky . 0n_human health and its compati- here. Where _this variety comes Dm b1l1ty in various spray formulae through the winter, it can be de- i mt that need to be answered. pcnded upon to produce large llv -- quantities of late berries over a - be NOTES ON Br-ACKBERMES l3?a ;La&haxeLilL?pqr?$ 2% plc IN KENTUCKY allowed to_remain on the vines un- ${1 W- R- ARMSTRONG lJl.a5a Ea23,t,;;X$;t .m- A small variety planting of black- for its small sized fruit which is a Sw ` berries made in western Kentucky characteristic of the variety. This Vlll ln the spring of 1939 has furnished variety contained one plant that on S0me results that might be of- gen- regularly produced fruit twice the lng eral _1nterest to berry men. This size_ of the others_ and otherwise peg - planting is located about 75 miles typical of the variety. However, Any _ vast of where the Ohio River joins this plant was one of the very few my - the Mississippi, on the grounds of of this variety to take orange rust. er- V. the Western Kentucky Experiment As for productiveness, quality and her SbStation, Princeton, Kentucky. large fruit size, the Alfred has been The planting is on low ground that the most outstanding but the plant - 5