LysIMETER EXPERIMENTS — II 63 
prehensive. These data are given in table 14. It is apparent from this 
table that the application of lime to this soil results in an increased 
TABLE 14. Nirrocen In BotoH DratnaGeE WATER AND Crops, CALCULATED TO PounDs 
PER ACRE IN YEARLY PERIODS 
Nitrogen in both drainage water and crops 
Burnt (pounds per acre) 
Tank lime 
Oats Peas Maize Oats Barley Total 
1913 1914 1915 1916 1917 oe. 
2 None | 46.03 | 74.47 | 44.781] 26.96 | 23.51 | 215.75 
“=e 3,000 | 57.46 | 114.16 | 51.67 | 28.81 | 28.10 | 280.20 
removal of nitrogen in the combined crop and drainage water. There 
would seem to be little doubt, in view of the data presented in the last 
three tables, that the effect of lime on this soil is to increase nitrate 
formation. 
RELATION OF DIFFERENT CROPS TO FORMATION OF NITRATES 
It has been noted that the experiments with Dunkirk soil ‘indicated 
certain rather definite relationships between certain kinds of plants and 
the formation of-nitrates. A similar relationship appears to exist in the 
experiments with Volusia soil, as may be seen in the data given in table 15: 
TABLE 15. AvatLaBLe NITROGEN IN Sor, PropuciING DIFFERENT Crops, AS MEASURED 
BY THE NITROGEN OF THE CROP AND OF THE DRAINAGE WATER 
(In pounds per acre) 
Nitrogen in planted tanks Nitrogen in Excess (++) 
(average of tanks 13 and 15) drainage water |. deficiency 
Cr in bare tanks Sin 
e (average lanted 
= In In Eas 7 tanks 
ee ions Paatat Total 14 and 16) 
ts (LOUS) esses 2. 16 35 12 63 81 a8 
Beas (1914)0 o.oo S.... 12 81 27 120 42 +78 
Maize (1915)......... 15 32 11 58 52 + 6 
Mratse(@ONG) ea... 5: 4 23 8 35 42 — 7 
Barley (1917)... ...-. t 21 7 32 42 —10 
* Estimated at one-third the quantity in tops. 
