New York AGRICULTURAL EXPERIMENT STATION. 467 
manure. The percentage of manure in this test was kept the 
same for all the soils as the following table shows: 
TABLE II.— INGREDIENTS oF Sorts USED For LETTUCE FORCING. 







(CROP It.) 
Ingredients. 
Soil. — --— 4 s~ 
¥; Loam. Sand. Manure. 
Per ct. Per ct. Per ct. 
MEPELIE NO tes ecco te aioe ese wel cee ola ss 50 > 25 25 
PENN TENT EY or ig) «wy tre'bie stele 0 wie ese: ovole 52.2 O20 15.5 
RESET ITT | 4e. tS 5t St. « 5 os 8 a ia a 2 meyers 19.9 64.6 15.5 
BME LIE) Oiete ns nc aie ic iv «Se 0.0 « acere sb. Ben 84.5 15.5 
recast 

— 

The ingredients which were used for these soils differed slightly 
from those which were used for Crop J. The manure was horse 
manure with the long straw and the dry rough portions removed. 
It had been turned several time and was partly rotted. The 
sand was much like that used for Crop I, but the loam was com- 
posed of rotted sod from a medium clay loam* which had some- 
what more sand and gravel than that which was used for the pre- 
ceding crop and it also differed from it in that it was not piled in 
alternate layers with manure. 
In order to insure for Soil 6 a superabundance of available nitro- 
gen, phosphoric acid and potash, it was given a liberal application 
of commercial fertilizers in addition to the manure. This made 
it necessary to extend the same treatment to Soils 4 and 5. High- 
grade sulphate of potash, 50 per cent actual potash, was applied to 
each at the rate of 400 pounds per acre; and acid phosphate con- 
taining about 15 per cent available phosphoric acid, at the rate 
of 600 pounds per acre. Nitrate of soda containing 15.7 per 
cent nitrogen, was applied to the growing crop at the rate of 
133 1/3 pounds per acre in two applications. 
The 3 soils were arranged in 9 plats on the north and south 
side benches of the lettuce-house as shown in the accompanying 
1 The mechanical analysis of this soil is given on page 479, and the chem- 
ical analysis on page 487. 
