148 STORRS AGRICULTURAL EXPERIMENT STATION. 
EFFECT OF NITROGENOUS FERTILIZERS UPON LEGUMES. 
During the years 1895-98 inclusive, the Station carried on a 
series of experiments with several of the legumes, especially 
cow peas and soy beans. With each crop there were four ex- 
periments, comprising 10 plots each, mostly small. Although 
there were fewer and less extensive experiments with these 
crops than with cereals and grasses, the results are interesting 
and important. 
Effect upon Yield. — The experiments, on the whole, indi- 
cate than the yields of legumes were increased only slightly, 
if at all, by the use of nitrogenous fertilizers. In many 
cases the yields with mineral fertilizers were nearly or quite 
as large as those from the use of nitrogen in addition to the 
minerals. This was especially noticeable, as seen in Table 18, 
in the experiments with cow peas grown for fodder, and har- 
vested before or at time of blossom. In these experiments only 
the plots to which the one-third ration of nitragen was added 
yielded crops larger than those from the mineral plots. 
The weights of yields per acre given in the following table 
represent the averages of yields from the plots upon which the 
same kinds and amounts of fertilizers were used. 
TABLE 18.— Comparison of yields of cow peas (green plants cut jor 
fodder) from plots upon which different quantities of nitrogen 
were used. 

YIELD PER ACRE (80 % WATER). 
Plot Kinds and amounts 
No. of fertilizers per acre. 



Comparative scale, 10,000 lbs. to the inch. lbs. 
0, 00 Nothing, : : a i a ee 9660 
Bg, 00 1 as ence Z a 18485 
730/) Niwogen, Pt | pg — 9265 
os 1 Nivceenn “i Pah z  ———— 18465 
92 |} Ninogen cont | a 




From this table it will be seen that not only was there no 
increase from the use of nitrogen, but even the yields of the 
crops from the use of the larger amounts of nitrogen averaged 
less than those from the use of minerals only. 
eae 
