[SHUTT] NITROGEN-ENRICHMENT OF SOILS LL, 
WASHINGTON CULTURES—RED CLOVER & ALFALFA—POT 




EXPERIMENT. 
Clover | Alfalfa 
| | | | a 
Un- | Seed In- | Soil In- Un- | Seed In- | Soil In- 
treated | oculated | oculated | treated | oculated | oculated 
| 

91-9 | 110-0 69- 63-6 51-3 






Ist cutting....... .| 109-7 O | 
nde). Was 7 "44640 rates 72-6 || 0076 
ce NS LEE | 143.5 | 149-4 | 161-9 | 96-7 | 104.8 | 141-4 
Torley ote. 366-9 | 387-7 | 413-2 | 244-5 | 241-0 | 292-3 

Considering the clover, the appearance of the treated and untreated 
crops was practically the same at the time of the first cutting, though on 
weighing the several yields it was found that that from the “seed 
inoculated ” fell somewhat behind that of the other two pots. At the 
time of the second cutting, however, the yields from the inoculated 
plants were decidedly the heavier and, again, when the third cutting 
was made a marked increase in the growth of the “soil inoculated’’-crop 
was observed. Comparing the total weights of foliage produced in the 
season, it will be noted that decidedly larger yields were obtained from 
the treated crops, the increases presumably being due to the influence 
of the inoculating material. 
As in the case of the clover, the first cutting of alfalfa showed no 
increase from the inoculated pots, indeed, the untreated seed gave a 
somewhat higher yield. At the time of the second cutting the “soil 
inoculated” alone showed an advantage. An increase, however, was 
observed when the third cutting was made in the treated alfalfas, more 
especially in the “soil inoculated” pots. Considering the total yields, 
it will be seen that it is only in the latter that any benefit has resulted 
from the culture. 
In the plot work, the alfalfa results were discarded owing to faulty 
drainage materially affecting the growth on a part of the land. The 
data from the clover, “seed inoculation” only being practised, are as 
follows, the yields being weighed as hay. 
