46 ROBSON QUALITY SEEDS, HALL, NEW YORK 
INSECTICIDES AND FUNGICIDES 
Insecticides fall into three classes: stomach poisons, contact poisons, and repellants. Paris Green, Arsenate 
of Lead, Calcium Arsenate—all poisonous to animals, including man—were for a long time the only stomach 
poisons known. A few years ago the scientists discovered a tropical plant from which could be made a material 
poisonous to chewing insects and worms but harmless to the warm-blooded animals. This is Rotenone. Rotenone 
should be used on all vegetables where leafy parts covered by spray or dust are to be eaten. 
Black Leaf “40” is a nicotine spray that kills plant lice by contact. The new insecticide, DDT, is also a 
contact dust or spray. It is very effective on worms, thrip, and leaf-hoppers but will not kill plant lice or Mexican 
bean beetles. 
Tobacco dust is repellent dust used to keep flea beetles off cabbage, cauliflower seedlings, and other tender 

plants. 
Copper Dusts and Bordeaux mixture are fungicides used to control fungus diseases. 
ROTENONE DUST OR SPRAY: Controls worms 
and chewing insects. Can be used anywhere. Will 
not burn foliage. Not poisonous to humans. (.75% 
Rotenone). 1 lb. can 50c; 4 lb. bag $1.30, pre- 
paid. 
DDT DUST: 5% for use on vegetables and flowers for 
control of insects as recommended. 1 1b. 50c; 5 lbs. 
$1.50, prepaid. 
DDT 50% WETTABLE for spraying fruit trees, vege- 
table crops, potatoes, flowers, ornamental trees, also 
for control of flies in barns, stables and other build- 
ings. 1 lb. $1.00; 4 lbs. $2.40, prepaid. 
BLACK LEAF 40: Standard nicotine-sulphate insecti- 
cide used as a contact spray for aphis and leaf-hop- 
pers. 1 oz. (makes 2 to 8 gals. of solution) 40c; 
5 oz. $1.10; 1 lb. $2.60, prepaid. 
TOBACCO DUST: Fine powder for dusting plants. 
2 lbs. 40 cts.; 10 lbs. 85 cts., prepaid; 100 lbs. 
$3.15, not prepaid. 
POTATOX: An economical insecticide and fungicide 
for use in control of bugs and blight on potatoes. 
4 lbs. $1.65, prepaid. 
CUKE AND MELON DUST: An effective dust for 
controlling bugs and blight on cucumbers, melons, 
and squash. 4 lbs. $1.00, prepaid. 
ARSENATE OF LEAD: A poison for control of insects 
on foliage that is not to be used for human consump- 
tion.. 1 lb. 65c; 4 Ibs. $1.90, prepaid. 
ROSE DUST: Here's the answer to the leaf-spot, 
blight and rusts that are persistent trouble to rose 
gardeners. May be used as dust or spray on roses, 
snapdragons, carnations, etc. 8 oz. dust gun 70c, 
prepaid. 
TRI-OGEN SPRAY 
A concentrated Insect Spray and 
Fungicide for Roses, Asters, Snap- 
dragons, Carnations, Hollyhocks, 
Phlox, Delphiniums, Zinnias, Golden 
Glow, Dahlias, and many other 
plants. Full directions with each 
package. Tri-ogen is universally 
recognized as the best all-round spray 
for the rose and flower garden. Size A 
Kit composed of three bottles of 
Concentrate which, when properly 
mixed, makes 16 quarts of spray, 
$2.35, prepaid. 

WOODCHUCKS 
(GROUNDHOGS) 
CYANOGAS 
FOR WOODCHUCKS 
Woodchucks or ground hogs do a 
great deal of damage to many of our 
garden crops. Cyanogas is safe to 
handle and easy to use; kills in the 
burrows. Directions with each pack- 
age. Also controls ants, rats and 
moles. 1 lb. $1.10; 5 lbs. $3.90, 
prepaid. 

ZERLATE: A fungicide that is especially recommended 
as a spray to control early blight, leaf spot and an- 
thracnose of tomatoes; anthracnose of melons and 
cucumbers; also early blight of potatoes. 3 Ibs. 
(makes 200 gals. of spray) $2.05 prepaid. 
BORDEAUX MIXTURE: The standard mixture rec- 
commended for the control of potato and tomato 
blight. Can be used either as dust or spray. 1 Ib. 
makes 10 to 12 gallons of spray. 1 lb. 55c; 4 Ibs. 
$1.45, prepaid. 
COPPER DUST: An effective dust to use in treating 
potatoes and tomatoes for blight. 5 lbs. $1.05, pre- 
paid. 
COPPER DUST (With Arsenate). An excellent 
dust for blight and bugs on tomatoes and potatoes. 
Contains tri-calcium arsenate in addition to metallic 
copper. 5 lbs. $1.25, prepaid. 
FERMATE: A fungicide effective in controlling an- 
thracnose of tomatoes, black spot of roses and cer- 
tain other plant diseases. 3 Ibs. $1.90, prepaid. 
PARIS GREEN: An old reliable poison for control of 
potato bugs. 1 lb. 60c, prepaid. 
DRY LIME SULPHUR: For dormant spraying 
against leaf blister mite and peach leaf curl; also, 
summer spray for apple and pear scab. 1 lb. 47 cts., 
5 lbs. $1.95, prepaid. 
KOLO FRUIT TREE DUST OR SPRAY: Formu- 
lated for complete insect and disease control after 
the dormant stage. 3 lbs. $1.35, prepaid. 
PURATURF: An organic mercury compound for use 
in the control of crab grass. 8 oz. $1.60, prepaid. 
GRASSELLI SPREADER STICKER: A highly con- 
centrated, extremely efficient, spreading, sticking and 
wetting agent for use with certain insecticides and 
1 pint 90c, prepaid. 
fungicides. 

END O’ PEST: A new all purpose garden dust that 
comes ready to use in a handy applicator gun. This 
is the best small, inexpensive garden duster we have 
ever seen. A combination of tested insecticides and 
fungicides, End O° Pest helps control most of the 
three major types of garden pests—chewing insects, 
sucking insects and fungus diseases. 10 oz. appli- 
cator gun (complete) 98c; 10 oz. refill Cart- 
ridges 75c each, prepaid. 


