Analyses of One Hundred Soils. 153 
Clyde series. The samples, 100 in all, were taken from all parts of the 
county and from the various soil types. Many conditions were noted 
when the samples were taken (September, 1917), as the condition of 
the crops, prevalent weeds, trees, etc. Information as to the use of 
lime fertilizer, crop yield, was obtained from the man in charge of the 
farm. The following data was obtained by analysis: First, amount 
of volatile organic matter; second, per cent of phosphorus; third, per 
cent of nitrogen; fourth, presence of carbonates and acidity of the soil 
to litmus paper. The data from these soils is recorded in the tables 
which follow: 
DISCUSSION OF TABLES. 
© It will be noticed from the tables that there are many soils of this 
county quite high in organic matter, only 11% being below 4%, while 
45% range from 4 to 7%; 37% range from 7 to 15%, and 6% are above 
that amount. It might be expected that this high organic content would 
earry a considerable amount of nitrogen, and this was found to be the 
case. Every per cent of increase in organic matter carried with it an 
increase of 519 pounds of nitrogen and 72 pounds of phosphorus per 
acre. This is much less phosphorus than is to be expected in these 
soils, and in most cases they would respond profitably to an application 
of that fertilizer. It is shown in Charts 1 and 2 that nitrogen has more 
to do with high corn yield than phosphorus. There is a serious lack of 
calcium carbonates in over half of the soils tested; 55% are acid to 
litmus. This condition makes a good clover stand nearly impossible 
and is the main cause of “clover sickness” frequently reported. 
TABLE I. 
Organic Matter 0 to 4%. Nitrogen and Phosphorus Content. 
Per Cent. 
Sample O ° Lbs. per Per Cent. Lbs. per Per Cent. Lbs. per 
No. Matter Acre Nitrogen Acre Phosphorus Acre 
atter 
25 2.19 43, 800 0714 1,428 .0827 1, 654 
Re 4.00 80, 000 .1834 3, 668 0781 1,562 
35° 1.66 33, 200 .2226 4,452 . 0660 1,320 
14° 1575 35, 000 2002 4,004 0946 1,892 
16° 3.40 68, 000 .1106 2,212 .0410 1, 820 
ii 4.00 80, 000 .2122 4,244 0990 1,978 
235 3.81 76, 200 .0840 1, 680 0754 1,508 
27° 3.66 73, 200 .1414 2,828 .0722 1,444 
285 4.01 80, 200 .0980 1,960 0930 1, 860 
45° 3.72 74,400 .2525 5, 050 .0740 1,480 
475° 3.47 69, 400 . 2240 4,480 .0800 1, 600 
68, 433 3, 667 1,696 ave. 
| 
This group constitutes 11% of total. 
°—Acid condition. 
