AEROSOLS. Sprays, usually insecticides, dispensed in very fine droplets from
metal containers ("bombs") in which the active ingredient is dis
solved in a liquified gas. Most aerosols are prepared for use in commercial
greenhouses, often containing deadly parathion or TEPP and applied
with special gas masks, or for large-scale outdoor application by mist
blowers, but now there are handy small "bombs" for house plants or the
small conservatory. See DX Aero-Spray, Antrol Rose Spray Flower Bomb.
ALDRIN (hexachloro-hexahydro-dimethanonaphthalene). A chlorinated hy
dro-carbon widely used in grasshopper control, becoming important
for control of leaf miners, weevils, grubs, and maggots in soil, and many
other pests. Poison, follow safety precautions.
ALUMINUM SULFATE. Sometimes used for acidifying soil, may be toxic to
plants; do not use over 5 pounds per 100 square feet.
AMMONIUM SULFATE. For phymatotrichum root rot make a basin around
tree or shrub and apply 1 pound for each 10 square feet; fill basin
ANTIBIOTIC. A substance derived from one living organism to destroy
Aramite-15W (an alkyl aryl sulfite, U.S. Rubber Co., Naugatuck, Conn.).
An excellent new miticide, relatively non-toxic to man and plants,
that can be used alone or added to combination sprays to control red
spiders on roses and other ornamentals, boxwood mite, spruce mite on
evergreens, etc. Use 1 tablespoon per gallon.
Antrol Rose Spray Flower Bomb (lindane, rotenone aerosol, Boyle-Mid-
way, Inc., 22 E. Fortieth St., New York 16, N.Y.). Useful for
thrips and beetles on rose blooms, aphids on house plants, etc.
Arasan (tetramethyl thiuram disulfide, E. I. du Pont de Nemours & Co.,
Wilmington, Del.). A seed protectant to prevent damping-off and
some other diseases; usual dosage 1/2 teaspoon per pound of seed.
BENZENE HEXACHLORIDE (hexachlorocyclohexane). Effective against wire
worms and other soil pests but imparts objectionable flavor to food
crops. The purified gamma isomer is better. See lindane.
BICHLORIDE OF MERCURY (mercuric chloride, corrosive sublimate). Used
in 1 to 1000 dilution, two 7-grain tablets to 1 quart of water, for
disinfecting iris rhizomes after soft rot, pouring on soil in cases of crown
rot. Violent poison, do not swallow.
Bioquin 50W (copper 8-quinolinolate, Monsanto Chemical Co., St. Louis,
Mo.). A green copper fungicide effective for some fruit diseases,
Black Leaf 40 (nicotine sulfate 40%, Tobacco By-Products & Chemical
Corp., Louisville, Ky.). A very old and still excellent contact in
secticide, especially for aphids. Use 1 to 11/2 teaspoons to 1 gallon of water
and 1 ounce liquid soap or 1 heaping tablespoon soap flakes.