




DU BAY 
SEED DISINFECTANTS 
Increase Crop Profits 
Reduce Disease 
Losses 
The value of treating seeds with Du Bay Disinfectants is proved! 



The United States Department of Agriculture, most state 
experiment stations and many farm papers advise seed treatment, and often actually urge the use of Du Bay Disinfectants. 
Invest a few cents in Du Bay treatment this year, and see how much more profit you’ll get in return! 
A Treatment for Every Major Crop 
New Improved CERESAN 
Use this dry treatment on seed grain to re- 
duce seed-borne diseases, root-rot, and seed- 
ling blight; generally increases your yield 
and profit. Recommended by most experi- 
ment stations. Economical—costs as little as 
1-3/5 cents per bushel of seed. Safe to seed 
when applied as directed. Easy to use, doesn’t 
damage drill nor retard drilling rate. One 
pound treats 32 bushels of seed grain. New 
Improved CERESAN treats: 
Barley—Usually controls seed-borne stripe, 
covered and black loose smuts and reduces 
root-rot. 
Oats—Generally controls loose and covered smuts and reduces 
root rot. 
Wheat—Usually gives perfect control of seed-borne bunt or 
stinking smut. It reduces root-rot losses and smut dockage, 
but does not control loose smut. 
Rye—Frequently reduces losses from scab seedling blight, stem 
smut and stinking smut. 
Sorghums—Checks loose and covered kernel smuts. 
Peas—Generally checks certain root-rots and seed rotting, helps 
insure good stands. One pound treats 16 bushels. 
Cotton—Recommended by some experiment stations for treating 
cotton seed to control sore-shin, angular leaf spot, anthrac- 
nose, and seed rotting. One pound treats 12 bushels. 
PRICES—4 oz., 30c; 1 Ib., 75c; 5 Ibs., $3.25; 
25 Ibs., $14. 00; 100 Ibs. -, $53.00 
POST PAID—4 oz., 35¢; 1 Ib., 85c; 5 Ibs., $3.45 

—Seed corn treatment with 
Semesan Jr. SEMESAN JR. amounts to 
real crop insurance of full stands. At the ex- 
tremely low cost of 1 cent an acre, it re- 
duces seed rotting, checks seedling blight and 
certain seed-borne rots of root and stalks—gives 
corn the healthy start necessary for a big yield. 
Illinois Circular No. 444 says, ‘‘One of the best 
disinfectants for seed corn now on the market 
is New Improved Semesan Jr....’’. Yields in- 
creased 4 bushels an acre in tests. Treats both 
seed and field and sweet corn by the quick, 
easy dry method. Only 1% ounces needed per 
bushel. 
PRICES—1!4 oz., 13c; 2 for 25c; 1 Ib., 75c; 5 Ibs., 
$3.00; 25 Ibs., $12.50; 100 Ibs., $45.00 
POST PAID—1!Z oz., 15c; 2 for 28c; 1 Ib., 85c; 5 Ibs., $3.20. 

ole Sana oo ean 3 
WoopEN ult 
Fue Leeda 
LF. 
Pak >a Two LARGE NAILS; ONE 
BES Vita aes a Crea ae 
~ } d 
5 
ee ala 



oO 2% CERESAN—For bigger 
2/5 Ceresan cotton yields and MORE 
profit, treat seed with 2% CERESAN. Cotton 
states authorities report big profit increases 
with 2% CERESAN seed treatment ranging 
from $5.73 to $13.08 per acre. 2% CERESAN 
reduces seed rotting and damping-off and gives 
more uniform stands with less seed. In 40 
tests, 2% CERESAN increased the average 
stand 59.8% before chopping; 30.8% even after 
chopping — and increased the average yield 
16.4%! Saving in seed and replanting expense 
alone pay the small cost of 2% CERESAN. 
One pound treats 5 to 8 bushels. 
PRICES—1 Dee 70c; 5 Ibs., $3.00; 25 Ibs., $13.25; 100 Ibs., $50.00 
POST PAID—1 ib., 80c; 5 Ibs., $3. 20 
This easy potato dip dis- 
Semesan Bel infectant generally low- 
ers costs and improves yields. Reduces spread 
of bacterial wilt or ring rot by the cutting 
knife. Closely checked tests in 15 states have 
proved that any potato grower can usually 
expect better returns from his seed if he 
treats with SEMESAN BEL. At an average 
cost of 21 cents an acre this quick dip treat- 
ment — by reducing seed piece decay and 
seed-borne scab and Rhizoctonia—increased 
the average yield 13.6%. Result—lower grow- 
ing cost and more profit. No mussy soaking. 
Treat your seed as fast as you can dip it. 
One pound treats 60 to 80 bushels of seed—easily, quickly, in- 
expensively. 
PRICES—2 oz., 25c; 4 oz., 50c; 1 Ib., $1.50; 5 Ibs., $6.50 
POST PAID—2 oz., 28c; 4 oz., 55c} 1 1b... $1: ‘60; 5 Ibs., $6.70 
Don’t trust to luck for success 
Semesan with vegetables and flowers. 
Do what you can to control conditions. Treat 
your seeds, corms, bulbs, and seedlings with 
SEMESAN! Used as a dust or in solution 
with water, SEMESAN reduces seed rotting 
and damping-off, is highly effective against 
many seed-borne diseases, even prevents con- 
tamination of the soil by certain seed-borne 
diseases. One ounce treats 15 to 30 pounds of 
seeds at a cost of 1/4 cent to 1 cent a pound 
of seed. 
PRICES—1/3 oz., 10c; 2 oz., 35c; 1 Ib., $2.25; 
5 Ibs., $10.00 
POST PAID—1/3 o0z., 12c; 2 Gas) 38c; 1 Ib., 
$2.35; 5 Ibs., $10.2 
INEXPENSIVE HOME-MADE TREATER 
SEM ESAN 2 
as VECETABLE oss fl rows 
Opposite are the plans for constructing an effective rotary 
treater for disinfecting small lots of cotton seed, as well as 
grain, corn, sorghum and other seeds. This double-acting treat- 
ing machine will thoroughly apply the disinfecting powder to 
every seed. It rolls and throws the seed against a mixing board 
and in addition, surges them from one end of the drum to the 
pra ; other. These two motions cause the dry disinfectant to be even- 
245 14 i) 
bp e ly and completely spread over every seed, thus insuring the 
RL eT Vee el eme Lt) 
De eae 
34 INCHES HIGH—— >} 

RUSSELL-HECKLE = .257 iz io. nav ane oe 
[ 24] 
most efficient disease prevention and control. It also is dust- 
tight, an added advantage. 
This treater can be made from a 50-gallon drum, and costs 
only $2 to $5. Write for treater specifications and seed treat- 
ing chart. 
For treating large quantities of seed, write for information 
on power treaters. 
For Quantity Prices 7 
