- 458 - i 
Against aphids on hops a spray solution containing 1 percent 
tobacco extract and 1.5 percent soft soap solution was very good (p. 14'. 
STRUHALIA, J. (1984) 
1903. CONTROLLING APHIDS. Prakt . Ratgeber im Obst- und Gartenbau 
18: 255, illus. 1903. [in German.] 
One pound of soap is dissolved in 10 1. water and the contents 
of 2 packages of smoking tobacco is soaked in water and the decoction 
is added to the soap solution and thoroughly mixed. The infested 
potted plants are dipped upside down into this solution and allowed to 
dry, and later they are washed with clean water. 
INDA, J. R. (1985) 
1906. TOBACCO AS AN INSECTICIDE. Comision de Parasitologia Agricola, 
Mexico. Circ. No. 44, pp. 1-5, illus. [In Spanish.] 
In the laboratory of the above Commission tobacco juices have 
been tried against soft insects, larvae, and bugs. They are sold in 
the city of Mexico and are labeled 46-47° Baume. They gave good re- 
sults when applied in dilutions of 5 parts of juice to 100 parts of 
water and the insects died within 10 to 20 minutes after the applicatioi 
of the spray. 
R, N.D.L. (1985) 
1908. NOTICE SUR LE JUS DE TA3AC. Revue Horticole Tunisienne 7: 192. 
The following spray mixture is the formula of the Tunisian 
Government for use in North Africa: 1 1. tobacco extract, 1 table- 
spoonful sodium carbonate, 10 g. black soap, 1 tablespoonful methyl 
alcohol, and 5 1. water. 
SARGEANT, T. ?. (1987) 
1909. FUNGICIDES, INSECTICIDES, AND VERMIN KILLERS. Merck's Rept. 
18(11): 294-296. 
Nicotine is used as an insecticide, either emulsified with 
soap as a spray or in alcoholic solution with camphor and various 
volatile oils as a fumigant . Some of the nicotine of commerce is 
adulterated with pyridine. For use as a fumigant the alkaloid should 
be pure. Nicotine has also been used for destroying ants and as a 
sheep dip (p. 295). 
Tobacco, denatured in bond, is used in powder as an insecticide. 
It is an ingredient in most fumigating powders. Infusions are also 
used for the same purpose in the form of sprays and washes. Tobacco 
is also used in the manufacture of sheep dip (p. 296). 
