
Crab Grass Control 
Many who come to discuss crab grass look. askance 
when we tell them grass is the best control we know. 
Nevertheless no better means for eliminating crab grass 
can be exhibited than a well-established, properly 
nurtured lawn of permanent grasses. Most lawn soils 
are infested with crab grass seeds. A dense turf which 
shades the ground will effectively discourage seed 
germination. The mild shade of the ideal lawn, free of 
crab grass, illustrates our point. When turf is thin or 
dies out from disease, grubs or insect damage, crab grass 
and other weeds quickly volunteer to fill the void. 
Unfortunately, most of us think of remedial measures 
for crab grass eradication when the season is so advanced 
that little can be accomplished toward the desired end. 
Early July and no later than August first is the time 
control measures must begin. A choice of several methods 
or chemicals to effectuate control are open. 
If only occasional plants occur, hand removal is prac- 
tical. When infestation is heavy, repeated heavy rakings 
to lift runners, followed by cutting to prevent seed head 
formation will succeed, if the lawn is liberally fertilized 
and reseeded in early September. The fertilization and 
reseeding should be preceded by spiking to insure a 
good seed bed. 
There are several chemicals which can be used for the 
eradication of crab grass, which you will find listed on 
this page. But—please read our bulletin—'’CRAB 
GRASS CONTROL” before applying any chemical to 
your lawn. 
AERO CYANAMID 
A high analysis nitrogenous fertilizer extremely caus- 
tic to vegetation when applied at reasonably heavy rates. 
It has a place in the crab grass control picture as a soil 
sterilizing agent. Lawns completely infested with crab 
grass which need no regrading or topdressing, are 
treated with 75 pounds of Cyanamid per 1000 square 
feet. This will not only kill the surface vegetation but 
virtually all weed seed in the top inch or so of soil. 
One month must elapse following the application of 
Cyanamid before proceeding with spiking and reseeding. 
No fertilizer other than superphosphate should be applied 
to Cyanamid treated lawns until the following Spring. 
Price: 100-lbs. $6.00, 500-lbs. $29.50. 
Cyanamid may also be used to sterilize lawn top- 
dressing. From 13 to 15 pounds is thoroughly mixed 
with one yard of soil. This should be allowed to stand 
for several weeks before use. If possible, the mixture 
should be turned once or twice. So used, Cyanamid will 
destroy virtually all viable seeds in the soil. 
AERO CYANATE 
A new product made by the American Cyanamid Com- 
pany called AERO CYANATE was used last season on 
golf courses and home lawns for the control of crab 
grass and gave great promise as an effective control for 
this pest. We will tell you more about this material 
later on as soon as packaging and prices are established. 


Mature Plant of Crab Grass 
TAT C-LECT, the selective crab grass killer contains 
the much publicized PMAS as the active ingredient. It 
will destroy crab grass in two or three applications with 
little discoloration to permanent lawn grasses. Appli- 
cations should be made at 5 to 7 day intervals. Instruc- 
tions on the container should be followed implicitly. 
TAT C-LECT REGULAR. This is the same material as 
furnished for the past two seasons. Packed in 8-oz. 
bottle 85c., 16 ozs. $1.50. | 
10% concentrate, which is 5.6 times the concen- 
tration of the regular Tat C-Lect. Pt. $3.25, gal. $13.90, 
5 gals. $62.50. 
TAT C-LECT FORTIFIED. A combination of Tat C-Lect 
and 2-41). °8 ozs. 85¢.;.16 ozs. $1750: 
13% slat. G-Lects Fortified concentrate, | Pt-u53. 5; 
gal. $16.00, 5 gals. $72.00. 
ZOTOX has a definite place in the control of crab grass. 
On heavy mature crab grass it is capable of giving 
quick kill at nominal cost. When soil moisture and 
reaction are ideal and temperatures not too high, 
dilute rates of ZOTOX are fairly selective. Carefully 
used, it will not destroy permanent lawn grasses al- 
though discoloration may be quite severe. For a 
complete kill of all vegetation the rate should be 
16mounces™ of more: per™ 1OO0Msquarcuacet a aErices: 
Pr. $1.50, qt. $2.50, 5 lbs. $4.50, 30 Ibs. $22.50. 
MILARSENITE. A combination of Milorganite and 
sodium arsenite, a caustic weed killer. Quite widely 
used by golf courses for crab grass and clover control. 
May be applied with a carefully calibrated fertilizer 
distributor at rates varying from 5 to 50 pounds per 
1000 square feet. Lower rates are used several times 
at intervals from 7 to 10 days apart for crab grass 
control. Heavier applications are used to effect a 
quick kill. 100-lb. bags $8.00. 
ROLLOSPRAYER. The Rollosprayer is perfect equip- 
ment for applying chemicals to large lawn areas. 
Holds up to seven gallons of spray and will cover 
1000 square feet with one gallon of solution. We 
have a few of these sprayers for rent at $5.00 per day. 
Illustrated on page 5. 
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