128 STORRS AGRICULTURAL EXPERIMENT STATION. 
how much more profitable is the crop from the use of the 50 
pounds ration of nitrogen if the crop is to be sold, because, as 
previously stated, the market value of the crop depends on its 
weight, and not upon its protein content. 
Effects upon Yields of Oats— Only one soil test and two 
special nitrogen experiments were made with oats, a very 
much smaller number than were made with grasses and corn. 
At the time when these experiments were made the conditions 
of seasons and soil were not altogether favorable. For these 
reasons it is thought unadvisable to draw any definite con- 
clusions regarding the effect of nitrogen upon the yields; Sit 
may be. observed that, in a general way, the results seem to 
correspond with those with corn and grasses. There was a 
gradual increase in yield according to the increase in the 
quantity of nitrogen used, but the profits from the use of nitro- 
gen have been very small. In the next section of the dis- 
cussion, however, attention is called to the increase in the nitro- 
gen compounds (protein) in the crop as a result of the use of 
nitrogen in the fertilizer. 
The following table gives a comparison of the results of the 
experiments with oats. The yields per acre are the averages 
of yields from all the plots having the same kinds and amounts 
of fertilizer per acre. | 
TABLE 8.— Comparison of yields of oats (grain) from plots upon which 
different quantities of nitrogen were used. 

YIELD PER ACRE (11.1 % WATER). 




Plot Kinds and amounts 
No. of fertilizers per acre. 
Comparative scale, 400 lbs. to the inch. lbs. 
lbs. 
O, 00, ; 
EG | Nothing, s Se, 5) A 474 
6, 6a, | § Dissolved boneblack, | 320 . 
66, 6¢| ( Muriate of potash, . | OO ——————_—_—_—_—— 484 
7 Mixed min. as plot 6, | 420 
8, § Mixed min. as plot 6, | 480 
9, Mixed min. as plot 6, | 480 
noe 15 Nitrogen, ; : 78 2 Se | SSE 704 


