_U3- 
The To'bacco Ingect Council (222) in March 19'^8 i^^ued "UJ-ge'^ti^nf? 
for thr< control of totacco- in<3Pctp. I>u?;t, cott«^ining 1 porcnt of rct^mnp 
vrpe rf-c^T^pnr.pd for co^'O^ting th':^ tobacco fie?. tf-'«:tlf^ inff-'ptir.f flu'-— cur«~cl, 
Burl^■.7, and ds.r'< firR-cured tobacco*?, also shadp-cirovn ty^ea of cigar to- 
T3!=ccoR, For thr latt-r, fi--ply ^■■•rouiid, atrriliz"d t'^tacc'^ dust should te 
u-a.-d p.'' thp dilur-nt p.f.T-'iic^ti'^n "bring niadr with a rotrry hand-op'~-rat'^d 
c\n'^t>'T. V<'h*r thp pli^nt?^ pre- at out kn«=-— high a dosag'^^ '-f U t^ 5 T^ounds ""pt 
= crr i'; suffic'^nt, M-^tur' totfccc nay requir'- 7 to 8 p'^unds r,f^T acr?. 
A'v.lic^ti'nr phrul'"'. 'b'" r'?-"e?t''d evry ,U t^ 7 day? until contr-1 i^ '^'bt^i'tf'd. 
At thp '^-c'^'.C. ann^i.al mpetin-i of thp T-'b.acco In'^cct Council (TQ) 
in July 1^3'', prvrral prvf^pVrri* npnti'^ned rotph^np. W. E. "vhite of thp 
Bur'-s>^;. of ^nton^l''r-:y and Pl^nt Q,uar^ntinp, r^portpd that dust niTturrr^s -nrp- 
■^PT'd frorn elth'T drrrin or cube ha'"T "bppn used durinp: thr l^^pt t'-'o seaconp! 
r'th'^r pffrcti"rlv wnd pytpneively for flea "b^Ptlp control. He ct^tpd !^1<50 
th^t in titton^-t" to increa<5f^ th'^ toxic' ty of cuh^ nnd dr-rris ^.atTifils, 
crrtri"' v<^;;-ta'blp oil's ha"*" "bp-^n incorpor^tpd with th^ powderp. and oytract?. 
Early tp^t? <5hov;pd that thP ^id-ition of thpse oil? sprvpd to incrp^fp the 
tnricity 'f thp irt-^rials to c^Tt^in inaoct?;, Hov^-v- r, furth-r vor^c ha'' 
indic-'^tpd that vrhf-n thPsr oilr pr^^ uppd with cprtain orrendinr^ or wPtting 
agpnt-, thp pffrct ni-:;ht "bo a rpduction rt.ther thr>n an incrp^^f^o in the 
tonicity. H. H. Jpwett, -f thP Kontuc^ry Acriciiltnral Er-nari'n- nt Station, 
rppprtpd th~t for thp control of flpp "b'^rtlea in tolD^-cco-rlant bpde, d\?.stp 
c^ntrir.ing roten-^if^' arp pffrcti-^o only whpn applied at frPbuent intprval9 
and arc little v.opd for th-^t rppsT and "bpcpu?"^ of greatpr cofat. These in- 
pPcticidPR do n-^t injure toc^cco -^l^nt" in brde if ap-olipd pr'^p-'-rly nnd in 
correct ^^jn^unta, L. E. Scott, of the Biireau of Entomplog;'/ and Plant Q^^ar- 
antinp, Clar^sville, Tenn, , rp^o'^rted on thp US'" '^f dirs lori'^r to setting 
t^'bacco plants. Cube find, pjrethrur. du.sts n=--y br used vfith safpty, but it 
is not known whrth-r pithrr will or pffpcti'-f» «-2:^inst cr^-^bi-"".? or flpa- 
bpptlp larvae. W. A. Shards^ of the Oyford/lator^tory of the Bureau of Ento- 
m61oi:;.v f*.nr\ Plp.nt Q^iarantine, spokp on thp possibilities of incor^^orating 
'insecticides effecti'^pl-' in thp spr^y for d^wny mildew, -The results of tvrp 
spries of tPst'? convd-ictod in the spring of 193S, tog-'th- r vdth th^se fro'Ti 
sinil-'^r trstc in 1937, "howrd that the ar.plicti-n of the roconnpnd'^d s-nrpy 
containing 0,02 o^fcrnt of rot^non^, for the control of bl'ip nold was not 
fio efff^cti"p in c^ntrollinc'- thr t-^bacco flea beetle in plpnt b^ds p.q w^r the 
apTilicati'-n of r> dixct cor.taininr 1 r)Prccnt of rotrnono, H, C, Hi^lloc-c, of 
Pennsylvania Strt-^ CollPt'.-^ , rpr.ortfd that pr^li-^inary tpsts indic'atpd th^t 
cubp containinci 1 pprc^nt of rotenonp with st'^riliztd tobacco dust ns a dll- 
n'~-^t, will fii^"" crpod r'-sultr for thp control of thp flp-" beetle und'T Ponn- 
nyl^''^nia coriditi-^ns, '-^r-v'- cirll" if s'^-"- stick-^r «uch ar; Ultrawpt i" u.s'-d 
vrith thf^ nnt ri^l. 
The R^corn-ip.nd''>tion"i Connitte'^ of th'^ T^^bacco CoMj-.cil sugrpst^-d the 
follovri^.,^ chen.fv in the IQ"^.: roco''"'"ond-^ti'"ns for tobacco inspct control: 
■'^That rotrn'^n^ -'r.^t for fi^ld control pf flm b-ptl^s on *rin-ffrown t^b- 
accoe >'•- r= c^"" T'ndpd v-ith, "' rhf^-^/" ^ str'^nc-^r rpspr'^pti'^ns," 
T'-.p United St^trc Bur^^n of "^nto-nnlog.v snd Fl^.nt f^iar^ntine ("^9S) 
in 1938 Ptatfd th^t fi^ld-olot t^sts and larg'--scalo field ej-nprinenta ' 
against E. oar-'nilp and E. cvicu'"' ri^ in Florid?, Tenneflflpr^ North C-rolina, 
Son.th Ceroli'-Rj -'nc, Connecticut eorroborat^-d th*^ result^ pf tests ■o'^rfpr^pd 
durine nrP""iouR "pr-rs in indic"tin.r thet vfherev-r thp t^lup -^f the cror» 
Jufitifiod thp '3.SP nf thic /i-n-cticide thpse ^ests c^uld b'^ c'^ntroll'-d In 
th*" -plnnt bpd, as well op ^n n'^wl" spt "plants p.nd on thp .•:rowii-'g crnn by 
tiTielr a'^plic=^ti-^nq of n dust "^irturp conteinin:: rot'^n^np. 
