26 
HENRY F. MICHELL CO. GOLF EQUIPMENT 
FUNGICIDES FOR BROWN PATCH CONTROL 
Every unchecked fungous attack on the turf means additional fertilizing, top dressing, weeding, or ever resodding;—needless main¬ 
tenance expenses that can be avoided by taking simple preventive measures now practised and praised by hundreds of greenkeepers- 
These greenkeepers treat their turf regularly with a mercurial fungicide. 
Maintenance costs are considerably reduced by preventing brown patch and other fungous diseases. Inspect 
the greens early each morning, and at the first appearance of any brown patch spots, spray the spots immedi¬ 
ately. This application can be made with a small knapsack sprayer. If there are many spots, the whole greens 
should be given a thorough treatment. Subsequent moining inspections should follow. During prolonged 
periods of hot, humid weather, it is advisable to treat the greens every week or ten days with mercurial fungi¬ 
cides. Further treatment in late fall to prevent “snowmold” during the winter months is strongly recom¬ 
mended. 
TURF FUNGICIDES — 
Brown Patch 
The Du Bay Fungicides— Special Semesan, Semesan, and Nu-Green—have successfully prevented and 
controlled brown patch for clubs in every section of the United States under widely varied soil and weather conditions. They are recog¬ 
nized as the standard brown patch remedy, because they (1) Are equally effective against both the dollar spot and large brown patch; 
(2) Quickly check attacks of brown patch and aid in rapid lecovery of the grass; (3) Effectively prevent brown patch throughout the 
season when regularly applied; (4) Give the maximum period of protection against this disease; (5) Are harmless to grass when applied 
as recommended; (6) Do not accumulate in the soil and tend to poison the turf; (7) Are easy to apply. 
Special SEMESAN provides a brown 
patch remedy much lower in cost than 
the organic mercuries previously used 
for this purpose. It now costs only 
$1.29 a green per application. Yet 
Special Semesan offers all the well- 
known advantages of organic mer¬ 
curials—effectiveness, safety, and ease 
of application. 
During the past two seasons, Special 
Semesan has successfully prevented and 
controlled large brown patch and dollar 
spot under widely varying conditions 
throughout the country. 
Greens treated with Special Semesan have shown no indications 
of burning, when applications were properly made. Like other 
organic mercuries it has high toxicity to brown patch fungi and 
low toxicity to the tender turf. 
Special Semesan is applied in solution or dry at the rate of one 
pound to 6,000 square feet. 
SEMESAN is the original brown patch fungicide. It has been 
used successfully by many clubs for more than a decade, and has 
generally given excellent control under the most severe brown 
patch conditions. It is highly effective under all conditions but is 
lecommended especially where the turf is in a good state of 
fertility. 
Semesan is applied at the rate oi one pound to fifty gallons of 
water to 3,000 square feet. It may be applied also dry at the rate 
of one-third of a pound to 1,000 square feet of turf. 
NU-GREEN contains the same effective ingredient as Semesan 
but has the added property of quickly restoring the diseased grass 
to its normal healthy condition where soil fertility is not suited to 
its rapid recovery. 
Nu-Green is applied at the rate of one pound to fifty gallons of 
watei to 2,500 square feet of turf. It may be applied also dry at 
the same rate as Semesan. 
Keep a supply of Special Semesan, Semesan or Nu-Green on 
hand, ready to start treatment the minute the temperature hits 
73° and the humidity 75%—the danger signs that brown patch 
is near. 
SEMESAN 
2 oz. can.$ .35 
1 lb. can. 2.25 
5 lb. can. 9.90 
25 lb. pail. 45.50 
100 lb. drum. 180.00 
300 lb. drum. 535.00 
l ib. treats 1,000 — 3,000 Sq. 
Ft. 
PRICES OF DU BAY 
SPECIAL 
SEMESAN 
5 lb. can.$ 7.00 
25 lb. pail. 33.00 
100 lb. drum. 129.00 
1 lb. treats 6,000 Sq. Ft. 
FUNGICIDES 
NU-GREEN 
3 
oz. 
can. 
...$ .35 
1 
lb. 
can. 
1.45 
5 
lb. 
can. 
6.30 
25 
lb. 
pail. 
. . . 29.00 
100 
lb. 
drum.... 
. . . 115.00 
300 
lb. 
drum.... 
. .. 338.00 
1 lb. treats 1,000 —- 
2,500 Sq. Ft. 
d 
m 
• 
1 
NU-GREEN 
Grass Disinfectant 
-■•r 
for 
Brown Patch 
1 
1 
Prevention and Control 
A* 
,,~: S 
■ 
$ 
FIVE POUNDS NET 
fi 
. 
CALO-CLOR 
A combination of Corrosive Subli¬ 
mate with Calomel, containing 81% 
of Mercury Metal in chemical combi¬ 
nation. Use Calo-Clor at the rate of 
3-oz. per 1000 sq. ft. to control a 
severe attack, or one-third this 
amount for prevention. 
CALOGREEN 
An extremely finely divided form 
of Calomel, containing 85% Mercury 
Metal. It is insoluble in water, slow 
to act and gives protection over many 
days. It is the best control for Small 
Brown Patch. 
Calo-Clor and Calogreen are recommended for dry application. For applying in solution use Suspension Calo-Clor or Suspension 
Calogreen, the regular parent mercurial to which a suspension agent has been added. This does not interfere with its action in any way, 
but makes possible more even distribution through power sprayers. 
All four types are put up in three sizes: 1 pound, 5 pounds, and 25 pounds. Ask for current prices. 
CORROSIVE SUBLIMATE (Bichloride of Mercury). A mercurial fungicide containing 74% Mercury Metal. This chemical 
is very quick acting, water soluble, with a relatively short period of protection. Recommended for severe fungus attacks where immediate 
results are desired. Prices on application. 
ALL PRICES SUBJECT TO MARKET CHANGES 
