Oct. 22, I917 
Effect of Sulphur on Different Crops and Soils 
93 
No. 896.—Keokuk-Waverly area, Barren County, from the Underwood farm near 
Roseville. The land had been long in cultivation; was worn out; had little fertilizer 
used and produced 20 bushels com, 8 bushels wheat, and 12 bushels oats per acre. 
No. 897.—Quaternary area, McCracken County, from the Station experiment field,, 
about 3 miles southwest of Paducah, at Tone Oak. A part of this land had been 
cultivated for 15 years, the remainder for 30 years. Some stable manure had been 
added. It produced about 15 bushels of corn, 8 bushels of wheat, and 1 ton of hay 
per acre. 
No. 898.—Devonian area, Madison County, from the farm of Mark Settle, northwest 
of Big Hill. This land had been cultivated for 50 years; was much worn; no fertilizers 
used. It produced 15 bushels of corn, 10 bushels of wheat, and % ton of hay per acre. 
No. 899.—Silurian area, Jefferson County, from a farm adjoining the Fair Grounds 
woods at Fern Creek. The land had been cultivated for many years; was much worn; 
no commercial fertilizers and little stable manure used. It produced light crops. 
Before the experiments were started the soils were partially analyzed 
and found to have the following composition, in pounds per acre, on 
assuming that the surface 6 % inches weighs 2,000,000 pounds (Table I) : 
Table I .—Composition of experimental Kentucky soils 
Soil number. 
Total phos¬ 
phorus.** 
Total 
sulphur, b 
Sulphate 
sulphur . c 
Calcium 
carbonate 
require¬ 
ment. 
802.. 
360 
180 
400 
520 
AOC\ 
160 
140 
180 
393 
I2p 
3 > I 7 ^ 
107 
143 
36 
333 
107 
8q4. 
T CMO 
C2Q 
896. 
700 
ACSCS 
200 
240 
400 
C2Q 
898. 
0 ACS 
4 \J\j 
rtAA 
400 
600 
A U-U 
380 
4 00 
o Magnesium-nitrate method (Wiley, H. W., ed. Official and provisional methods of analysis, Asso¬ 
ciation of Official Agricultural Chemists. As compiled by the Committee on Revision of Methods U S 
Dept. Agr. Bur. Chem. Bui. 107 (rev.), p. 2. 1908.) ’ ‘ 
& Sodium-peroxid method (5). 
0 Hydrochloric-acid (sp. gr. 1.115) digestion (Wiley, H. W. Idem, p. 14). 
d Hopkins method (Wiley, H. W. Idem, p. 20). 
These soils were air-dried, put through a coarse sieve, and 15 pounds 
(in triplicate) were placed in 2-gallon glazed earthenware jars, supplied 
with drainage and thoroughly mixed with the following materials, added 
at the rate of pounds per acre of soil on the above assumption of soil 
weight: 
500 pounds of tricalcium phosphate, C. P., precipitated. 
200 pounds of potassimum nitrate, C. P. 
8,000 pounds of calcium carbonate, C. P. 
100 pounds of flowers of sulphur; or 
200 pounds of flowers of sulphur. 
Triplicate jars like the above were also prepared of each soil, except 
that the sulphur was omitted; and these were used as controls. 
Series I : soybeans. —Fifteen uninoculated soybean seeds (Soja max) 
were planted in each jar in the greenhouse on November 2, 1914, and 
