In one field treated with malathion at the 1.25- the materials in controlling the worms. Again, how-
pound rate and in three helds treated with malathion ever, observations were made of the stimulation or
at the l.0-pound rate, the control of aphids was er- toxicity effects of the materials on the tobacco plants. A;
ratic. ln some parts of the field, control was adequate, Toxicity effects, possibly influenced by the drouth,
brit in other parts control was ineffective. were observed on many of the plots. Plants dipped in E
Treatment with lindane, however, was more satis- a suspension containing 2 ounces of actual lindane in ;
factory. Forty-eight hours after treatment the reduc- 20 gallons of water were stunted and many developed _
tion in population of the green peach aphicl was ap- abnormally long narrow leaves. Plants dipped in a ‘
proximately 80 percent. suspension of -f ounces of actual chlordane in 20 gal-
lons of water also were deformed. * ·
Wff€W¤fm5 Stunting also occurred in tests using emulsifiable
Field tests on the control of wireworms in tobacco insecticide transplanting solutions, except with aldrin `
in 1954 were planned mainly to test the relative ad- emulsion. Eight ounces of a 5-percent lindane trans- "
yantages of three methods of application of insecti- planting solution on a xylene base in 50 gallons of ir
cides: (I) using insecticide in the transplanting water; water killed Bti percentof the treated plants and severely
(2) dipping the roots at transplanting time in an in- stunted the others. l)ieldrin and heptachlor at the g
secticide solution; and   broadcasting the insecticide rate of 8 ounces of an emulsion containing l.5 and 2.0
on the srirface of the ground. pounds of the material, respectively, per gallon, caused 3.
Broadcast tests with granular aldrin, chlordane, and yellowing and stunting of the plants. g-
dieldrin at rates of Ei, 5, and I.5 pounds of the actual In this connection, 36 solvents were tested in lab-
nraterial per acre were nrade on three farms in l·`ay- oratory and field for toxicity to newly set tobacco Y -
ette (Bounty. .\pplication was by means of a fertilizer plants, when used as transplanting solutions. Each
spreader. ()n two other farnrs the same materials, at solvent, containing <1 percent Triton X-150 or air enrul- a
tfre sarrre rates, were applied to the soil as sprays. .·\s sifier, was used at the rate of ·f ounces of the test solu-
wirewornr darrrage on the untreated check plots in all tion per 50 gallons of water and applied at the rate of  
tfrese tests was very low (below l0 percent), no evalua- ré pint per plant. Of the various solutions tested, "
tion of control by the insecticides could be made. .—\s methyl ethyl ketone appeared to have the least toxic A
to effects of the insecticides on the plants themselves, effects on the plants. Dowanol 50 B, methyl alcohol, ` ,
no stiirrufation or toxicity was noted. ethyl alcohol, and ethylene glycol also resulted in no
Several materials were tested on small plots at the stunting or burning. Skellysolve "B", deobase, and `
fixperiment Station Farm in \\’oodford County, but No. 9 oil produced minor local leaf burning, while t,-
agairr the infestation on the check plots was too vari- xylene and carbon tetrachloride resulted in serious A
ablc and low for comparisons of the effectiveness of burning and stunting of the plants. L
Efficient Work Methods , " .| .%) ·   . x
III H3tCh€Yl€S ?l in an ·   3 q—, f?
sr. _____ .... ..+¤=•J - ` "` cl  .- x
lty (.ecrige fl. flyers, .\gr·icultrrral ficonorniis Department,   '   ,  
and fforrald \\`. \lacf.aury. Poultry Section   g L (       '  a c
  .     Y
flarcheries today carry on a mass-production busi-     r. , _ _  
ness. ln rrrass production, one of the keys to success,     Y` I _   M  `lii A WMW T A ,
aside from quality of product, is efficiency of opera-     ¤§ "   __, »-*    
tion. Small cfiflerences in efficiency of individual proc- ii   ,   ‘      
esses lead to large differences in total efficiency of the   ’ '     sl <
plant. fligher efficiency in hatcheries. in tllfll, leads   _ B ` ‘· `I ,, N ·q
to the supplying of healthy chicks and poults to pro- ’"f ,_  4 2 J ‘ __r__ K if  `
chrcers. at lower costs per unit. 'I`he Kentucky .-\g·ri-     aq y, - ”
cultural fixperiment Station, therefore. works closely ,·  , - · n L
with lratcheries in studies to improve over-all efficiency __ . , v_ A Q
(ll UI)(`I`Zffl()ff. if   
ln a survey of work methods and distances walked A R 
ffl flfffllk “'*’l`l* lll Wfcll Kclllllfkll llflfflllclllcs [llc fel- This method of setting eggs requires one man in the if l
lciwrrrg averages were found tit tflC llll1(‘ 1`€i|\1lf`€(l l0l` incubator and another oufside passing the trays of eggs
certain operations: f`o fill one tray of I50 eggs, l2,tf rhmugh (hc d,,(,,~_ ` ‘ i A
16 Uxivrgnsrry or Kigxrucxy k
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