104 STORRS AGRICULTURAL EXPERIMENT STATION. 
The fertilizer was applied broadcast on May 30, and the 
two varieties of corn were planted May 31, in check rows, 
three feet each way. ‘Throughout the season it was noticed 
that the growth of corn on the nothing plots was small and 
pale in color. ‘The mixed mineral plots, 6a and 66, made 
nearly as heavy a growth of stalks as the plots having nitro- 
gen, but the plants were lighter colored, and did not develop 
as heavy a growth of ears. The nitrogen plots were much 
alike, except that the growth of both ears and stalks seemed 
to be slightly heavier on the plots where the largest quantities 
of nitrogen were used. 
Tables 24 and 25, on the preceding page, give the yields of both 
corn and stover on the two series of plots for the two varieties 
of corn. ‘The water in both the corn and the stover from each 
plot was determined, so that the yields per acre are given on the 
basis of a uniform quantity of water in the case of each plot. 
It will be noticed that there is quite a marked increase in 
yield on the nitrogenous plots over that where only mineral 
fertilizers were used. The mineral fertilizers alone gave but a 
slight increase over that obtained where no fertilizer was used. 
This was true with both the corn and the stover. The per- 
centage of shelled corn was also greatest in most cases where 
nitrogen was applied to the crop. 
HXPERIMENT ON COW PHAS. 
Another series of plots similar to those on which the corn 
was grown, was planted to cow peas. ‘The size of the plots, 
and the kinds and amounts of fertlilzers used were exactly the 
same as on the corn plots. ‘The seed was planted in drills three 
feet apart, May 31, and was kept free from weeds by frequent 
cultivation. The growth until the latter part of the season 
appeared much the same on all of the plots except those 
having no fertilizer. ‘Toward the latter end of the season 
(Sept. 3) it was noticed that the growth on plots 11 and 12, 
where sulphate of ammonia was used in the larger amounts, 
was not as heavy nor as dark colored as on the adjoining plots. 
An examination of. the roots indicated that the proportion of 
root tubercles was much less on these two plots than on most 
of the others. After the crop was harvested a thorough 
examination of the roots was made on each of the plots, and 
the following notes were made. 

