Why Disinfecting Seed 
Before Planting Pays 
Of all the diseases that contribute to this immense annual 
loss, those carried on the seed are among the most important. 
Seeds of all plants generally carry on their exteriors spores 
of harmful as well as harmless disease organisms. That seeds 
carry disease spores is not a recent discovery. It has been 
known since 1755 when Tillet proved seed wheat carried 
smut. Today well over 200 different disease organisms have 
been reported by scientists as commonly carried by farm, 
flower and vegetable crop seeds. In fact, the seeds of many 
plants are recognized as the agents for world-wide distribu¬ 
tion of certain dangerous diseases. 
Seed-borne diseases are more insidious than most other 
types, as they do irreparable damages before their presence 
is known. Most growers are familiar with the destruction by 
smuts of small grains, root-rots of corn, scab of potatoes, cer¬ 
tain boll-rots of cotton, damping-off of flower and vegetable 
seedlings and many similar diseases, which are surface seed- 
borne. These organisms, besides infecting the mature plants, 
may slow up germination, cause seed rotting and seedling 
damping-off, all of which results in poor stands and weakened 
plants that fail to yi^Jd paying crons of best quality. 
CONTROL OF SEED-BORNE DISEASES 
In 1807 Prevost of France proved “bluestone” would con¬ 
trol stinking smut carried on seed wheat. Since then it has 
been found that the diseases transmitted on the surface of 
the seed are as a rule, the easiest to control of all types of 
those infecting plants. 
Early this century the organic mercuries were found to be 
very effective in killing many disease organisms carried on 
seeds, without injury to the seeds. This led to exhaustive 
investigations of these compounds. After years of intensive 
research the present Du Bay Seed Disinfectants were de¬ 
veloped. 
The prevention of disease by treating seeds before planting 
with the effective, easily applied Du Bay Disinfectants is 
less costly and returns greater profits per dollar invested in 
control than do most methods for combating diseases spread 
by other means. Years of continued use prove this! 
SEED TREATMENT PAYS 
Du Bay Seed Disinfectants pay large profits by destroying 
disease organisms before they can do damage; by preventing 
seed rotting in cold, wet soils; by reducing damping-off of 
emerging seedlings; by producing better stands of more vig¬ 
orous plants; by increasing yields; and by improving crop 
quality. 
A convincing illustration that seed corn treatment pays is 
furnished by the results of years of research by the Illinois 
and Iowa Agricultural Experiment Stations with the organic 
mercuries. Their average yield increase from treatment of 
farmers’ seed corn was 3.25 bushels an acre. If you price this 
increased yield at 63.29 cents a bushel, the ten-year average 
farm price of corn, the return is $2.05. Deduct the cost of 
treatment with New Improved Semesan Jr of 2 cents an acre 
—the profit is $2.03, or a 10,150% return on the money spent 
for disinfectant. 
Remember, it is not easy to determine whether seeds are 
contaminated or soils are infected with organisms that cause 
decay and consequent reduction in yields. Use practical crop 
insurance against surface seed-borne disease losses—TREAT 
YOUR SEED THIS AND EVERY YEAR. 
Don't Lose Those 
Extra Profits by Failing 
To Inoculate 
It is a scientific fact that two-thirds of the nitrogen re¬ 
quirements of legume plants is taken from the air when the 
seeds are inoculated with high nitrogen-fixing strains of 
bacteria. The bacteria within the nodules formed on the 
roots of the plant have the power to convert free nitrogen 
taken from the air into complex protein compounds which 
the plant is able to use to promote its growth. 
Contrary to popular belief, legume plants alone, without 
the aid of nitrogen-fixing bacteria, do not possess the ability 
to use free atmospheric nitrogen; nor are the natural wild 
bacteria, which often produce nodules on a plant, always able 
to fix nitrogen. Many times they are very inefficient, or even 
parasitic, and mislead the farmer into thinking he does not 
need to inoculate. It never pays to depend upon natural 
inoculation. 
Build up and maintain the fertility of the soil on your farm 
by inoculating all legume seeds (alfalfa, clover, soybeans, 
vetch, peas, and other pod forming crops) with NITRAGIN. 
Convert legumes from “SOIL ROBBERS” to “SOIL 
BUILDERS.” 
AGRICULTURAL EXPERIMENTAL STATIONS 
AND COLLEGE RECOMMEND INOCULATION 
Wisconsin Experiment Station, Madison, Wisconsin, Cir¬ 
cular 252—“Wisconsin farmers can improve their crops and 
enrich their soils by inoculating legumes such as alfalfa, 
clover, soybeans and peas.” 
Illinois Experiment Station, Urbana, Ill., Circular 326— 
“ . . . In order, therefore, to function most effectively as 
soil builders, legumes must be inoculated.” 
Texas A. & M. College, Circular 118—“Legumes store 
nitrogen in the soil through fixing bacteria. ... As these bac¬ 
teria are not present in all soils, and may be weak even if 
present, it is safest always to inoculate the seed with fresh, 
live culture before planting.” 
New York State Agricultural Experiment Station, Geneva, 
N. Y., Circular 179—“ . . . The average returns are such, 
however, that when the small cost of the culture is consid¬ 
ered, inoculation is perhaps the most profitable farm opera¬ 
tion.” 
INOCULATE ALL LEGUME SEEDS WITH 
NITRAGIN 
FORTY YEARS OF SERVICE 
When ordering. Always state name of se«d- 
ALFALFA, all Clovers 
Size Retail 
l A bu. each.$ .30 
1 bu. each.50 
2'A bu. each. 1.00 
PEAS (fill Varieties) 
VETCHES (All Varieties) 
Vi bu. each.$ .25 
1 bu. each.40 
1 2 A bu. each.60 
5 bu. each. 1.70 
12'A bu. each.4.00 
BEANS 
String, Wax, Kidney 
*A bu. each.$ .25 
1 bu. each.40 
5 bu. each. 1.70 
LESPEDEZA 
Size Retail 
1 bu. each.$ .30 
2 bu. each.50 
5 bu. each. 1.00 
SOYBEANS, LIMA 
BEANS, COW PEAS, 
PEANUTS 
1 bu. each.$ .30 
2 bu. each.50 
5 bu. each. 1.00 
10 bu. each. 1.60 
25 bu. each. 3.00 
GARDEN SIZE 
Garden Peas & Beans 
Sweet Peas & Lupines 
Enough for 4 lbs. seed 
Retail Price.10c each 
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