ROBSON QUALITY SEED, HALL, NEW YORK 
39 
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. 
contact dust or spray. 
bean beetles. 
The new insecticide, DDT, is also a 
It is very effective on worms, thrip, and leaf-hoppers but will not kill plant lice or Mexican 
Tobacco dust is repellent dust used to keep flea beetles off cabbage, cauliflower seedlings, and other tender 
plants. 
Dry Lime and Sulphur and Bordeaux mixture are fungicides used to control fungus diseases. 
ROTENONE DUST: Controls worms and chewing 
insects. Can be used anywhere. Will not burn 
foliage. Not poisonousto humans. 4 lb. bag (75% 
Rotenone) $1.60, prepaid. 
DDT DUST: 5% for use on vegetables for control of 
insects as recommended. 1 Ib. 50c; 5 Ibs. $1.45, 
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 0z. (makes 2 to 8 gals. of solution) 40c; 
5 oz. $1.10; 1 lb. $2.60, prepaid. 
DRY LIME SULPHUR: For dormant spraying 
against leaf blister mite and peach leaf curl; also, 
summer spray for apple and pear scab. 1 1b. 47 cts., 
5 lbs. $1.45, prepaid. 
ARSENATE OF LEAD: A poison for control of insects 
on foliage that is not to be used for human consump- 
tion. 1 lb. 45c; 4 lbs. $1.25, prepaid. 
PARIS GREEN: An old reliable poison for control of 
potato bugs. 1 1b. 60c, prepaid. 
TOBACCO DUST: Fine powder for dusting plants. 
2 Ibs. 35 cts.; 10 lbs. 50 cts., prepaid; 100 lbs. 
$3.00, not 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 64c, 
prepaid. 

POTATO FIX 
PREVENTS SPROUTING 
Potato Fix contains the methyl ester of naphthalene- 
acetic acid, a growth regulating chemical which has 
the power to stop sprouts from growing for as long as a 
year. Potato Fix to prevent sprouting is the modern 
way of eliminating storage losses. 
9oz. Treats 9 bushels $1.00 
1 1b. Treats 16 bushels $1.70 
5 lbs. Treats 80 bushels $6.40 
* 
“Just a few words of appreciation for the fine catalogue you 
publish. I find the information very helpful.’ 
March 25, 1947 aise: Gilbert Stewart 
1 
“East Meredith, N. Y. 
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 lbs. 
(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 lb. 
makes 10 to 12 gallons of spray. 1 1b. 40c; 4 Ibs. 
$1.00, prepaid. 
COPPER DUST: An effective dust to use in treating 
potatoes and tomatoes for blight. 5 lbs. 85c, pre- 
paid. 

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) 65c; 10 oz. refill Cart- 
ridges 50c each, 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, 
$1.50, prepaid. 
CONCENTRATED IWSECY SPRAY 
AND PUNGICIDE 


The Hudson Master Fog is a very good, inexpensive, 1 quart 
capacity hand sprayer suitable for a small garden. Patented 
recessed drip cup with vent cup to prevent overflow, curved 
syphon tube to permit almost vertical operation. Price 75c, 
prepaid. 
