Maine-Grown Certified Seed Potatoes 
" Potatoes' # 
Were introduced into New England by some immi¬ 
grants from the North of Ireland in 1718 and were first 
raised in the garden of Nathanial Walker of Andover, 
Mass. 
Selected Early Rose 
(Early). Its tubers are roundish, oblong and somewhat 
flat, while the skin is flesh-colored or pink. Not as pro¬ 
lific as some later sorts, but is extremely early. 100 
lbs./ $4.25; 60 lbs., $2.75; 30 lbs., $1.45; 15 lbs., 80c. 
The New U.S.D.A. Chippewa 
The Chippewa is a recent introduction of the United 
States Department of Agriculture. It is a high yielding 
potato, highly resistant to mild mosaic. It has a velvety 
white skin with very shallow eyes; regular in outline, 
oblong to eliptical in shape. It matures earlier than the 
Green Mountain and other late maturing varieties. It 
consistently produces an attractive tuber with a very 
high percentage of No. 1 potatoes. A distinct advan¬ 
tage possessed by the Chippewa is its maturity before 
the usual time of digging the late crop. While it is not 
classed as an early variety, it matures somewhat earlier 
than Green Mountain and other late maturing varieties. 
100 lbs., $4.75; 60 lbs., $3.00; 30 lbs., $1.60; 15 lbs., 
90c. 
Katahdin 
The Long Keeping Potato 
Originated by the U. S. Department of Agriculture 
and promising to become the outstanding late potato for 
market or storage. It was originated in Maine, by double 
crossing unnamed seedlings of Rural New Yorker No. 2 
and Aroostook Wonder parentage. It was bred for 
disease resistance, quality and yield. During the eight 
years it was under observation, it has been entirely free 
from mild Mosaic. In yields it has constantly surpassed 
Rural New Yorker or Green Mountain. The tubers are 
smooth, short, eliptical to roundish, and have few, very 
small eyes. The crisp white flesh has a distinct desirable 
cooking quality which appeals to the housewife. 100 lbs., 
$4.25; 60 lbs., $2.75; 30 lbs., $1.45; 15 lbs., 80c. 
Over a two year period of tests in Maine, the three 
varieties listed have shown the following relative produc¬ 
tion. 
Chippewa .476 bu. per acre 
Katahdin .410 bu. per acre 
Green Mountain .405 bu. per acre 
Culture. Cut the seed into pieces containing two or 
three eyes. Plant in rows 3 feet apart, and drop 1 5 to 18 
inches apart in the row. One-half peck of Potatoes should 
be sufficient to plant 100 feet of row; ten to twelve 
bushels of seed are required per acre. Cultivate constant¬ 
ly and thoroughly, and work the soil well up around the 
plants. Spray for both insects and blight. 
POTATO PRICES 
Subject to Change Without Notice 
Certified Seed 
100 lbs., $4.25; 60 lbs., $2.75; 30 lbs., $1.45; 
15 lbs., 80c. 
Certified Green Mountain 
This is the most popular variety and is used as a main 
crop winter sort generally throughout the United States. 
It is a white skinned variety of flat, oval form, very 
smooth and attractive. It ripens slowly and is an ex¬ 
cellent keeper. 
Certified Irish Cobblers 
An early, white-skinned variety, very short, thick, 
inclining to round. This is yearly increasing in popularity 
for the early market. Ready for market about ten days 
earlier than the Early Rose; tubers are uniformly larger 
and in average production of large crops it is not equaled 
by any of the extra early varieties, nor greatly surpassed 
in yield by any of the main crop varieties. The vine is 
very stocky and vigorous, not as liable to be affected 
with blight or to suffer by drought as most others. A 
dependable early variety. 
Certified Spaulding Rose 
(Medium early). Practically free from blight and rot. 
It yields well in all climates and is in one section of 
Florida being planted almost exclusively. In color resem¬ 
bles the Early Rose, shape similar, inclines to the oblong 
and is thicker. 
Irish Cobbler 
Raffia for Tying 
Raffia is the straw-colored inner skin of a palm found in Mada¬ 
gascar. It is very strong and tough but soft and flexible, which 
makes it the very best material for tying vegetables, plants, 
vines, etc. It is better than twine, as it does not cut the plants 
and is much stronger. It is also used for making baskets. Raffia 
comes in hanks of from 1 to 5 pounds. We offer the best grade. 
Price per pound, 30c, not postpaid. 
FORMALDEHYDE. Prevents potato diseases and in¬ 
sures a clean healthy crop. 
Directions for treatment of potatoes for common scab, 
black scurf or rhizoctonia and black leg, cold method: 
Soak the uncut tubers 1 1/2 hours in solution of one pound for¬ 
maldehyde in 30 gallons of water. If tubers are first dipped in 
or sprinkled with water, then covered with burlap sacks to keep 
them moist for a day or two before treatment, soaking period 
may be decreased to one-half hour and the effectiveness in¬ 
creased. See page 77. 
MAINE-GROWN POTATOES ARE THE STANDARD 
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ROSS BROS. CO. 
