Insect and Stage 
Coleoptcra (cent.) 
ChryscmGlidae (cent.) 
Loptinotarsa decem- 
lineata Say (Colorado 
potato beetle), adults 
Ditto (larvae) 
Ditto (adults) 
Ditto (larvae) 
- 43 - 
Preparation Effectiveness 
Extract in 
water 
Powder in 
water 
Powder in 
water 
Powder as a 
dust 
25-29?^ kill 
Effective 
70?^ kill 
Effective 
Reference 
Mclndoo, 
Sievors, and 
Abbott (66) 
in 1919 
Ditto 
Ditto 
Ditto 
Phaedon inccrtum Baly 
Dorris 
mixtures- 
Re commended 
Nczu and 
Sonoyama (72) 
in 1926 
Three-lined potato 
beetle 
Powder + hydrat- Effective 
cd lime (1+1) as 
a dust 
Kolsall et al. 
(54) in 1926 
Coccinellidae 
Lady-boetle 
Powder burned 
as a fumigant 
Effective 
Mclndoo and 
Sievers^ (65) 
in 1924 
Ladybird beetle 
larvae 
Curculionidae 
Ceutorhynchus pleuro- 
stigma Marsh 
Lepidoptera 
Cabbage worms 
Pcwdor in Effective 
water (1:666) + 
soap 
Powder + soot Inoffeotivo 
(1+2.) as a dust 
Powder in 
water 
Ineffective 
Kelsall et al. 
(54) in 1926 
K.M.Smith (85) 
in 1925 
Loefmans (56) 
in 1927 
Ditto 
Ditto 
Alcoholic extract Bffective 
Effective 
Com'l extract 
(1:3000) 
grAte 
.^tfeoM® 
Ditto 
Anon . ( 3 ) 
in 1927 
