16 
to be replenished considerably. The lime content of this soil is held 
principally as epidote and hornblende. Only a small amount of the 
lime-soda felspars are here. 
Piedmont Soils. 
Results at Iredell Test Far?n. G 
This farm is located near Statesville, well up in the Piedmont (foot¬ 
hill) section of the State. The main type of soil on the farm is Cecil 
clay loam. The important types in this section are Cecil sandy loam, 
Cecil clay loam, and Cecil clay, the latter two predominating. 
The Test Plats. 
The plats on which these experiments were conducted are embraced 
in Fields A, P, and C. Fields A and B had been long in cultivation 
and w r ere badly run down when work was commenced. The plats in 
Field C were part of an old field, covered with broom sedge, small 
briars, and small pines in 1903 when the State took hold of the property. 
These plats are one-twentieth acre in size, with space between plats 
sufficient for two rows of corn or other crops, the rows on either side 
of each plat being fertilized like the plat which they adjoin. 
Field A. —These plats were used for fertilizer experiments with cotton 
in 1903-4-6-9; for fertilizer experiments with corn in 1905-7; for gen¬ 
eral crop of oats without fertilizer in the fall and spring of 1908; and 
for fertilizer experiments with peas in the summer of 1908. In case 
of each of the three crops, the same plan or system of fertilization 
was followed. By this is meant that plat 1 in all cases received only 
nitrogen; plat 2, phosphoric acid; plat 3, potash, and so on, though 
the quantities actually applied varied with the three crops. The fertili¬ 
zation of cotton plats was based on a normal application of 400 pounds 
per acre of a mixture containing 7 per cent available phosphoric acid 
and 2 per cent each of nitrogen and potash. The fertilization for 
corn was on a basis of 300 pounds per acre of a mixture containing 
7 per cent available phosphoric acid, 3 per cent nitrogen, and 1% per 
cent potash. For peas, the fertilization w T as based on a normal appli¬ 
cation of 300 pounds per acre of a mixture containing 8 per cent avail¬ 
able prosphoric acid, 1 per cent nitrogen and 4 per cent potash. 
Field B. These plats were used for fertilizer experiments with corn 
in 1903-4-6-8; for fertilizer experiments with cotton in 1905 and 1907; 
for a general crop of oats without fertilizer in the fall and spring of 
1909, and for fertilizer experiments with peas in the summer of 1909. 
Field C. —These plats were used for fertilizer experiments with peas 
in 1904-5-6-7; a grain crop without fertilizer preceding the pea crop 
in each year except 1904; for fertilizer experiments with cotton in 1908; 
and for fertilizer experiments with corn in 1909. 
Table 9 gives the average results for seven years fertilization for 
corn on these fields, A, B, and C. 
usedfTthis BuUetm ° f ^ BulS ' V ° l ‘ 31, No3 ‘ 6 and 8 ’ f ° r detaila of field results for Irede11 far “ 
