New York AGRICULTURAL EXPERIMENT STATION. 281 
parison of the plat yields, since the green crop has been cleared 
from the variable amount of water and the hay from differences — 
which probably accrued during curing. Yet we can not at this 
stage assert that one or other of the yields from these plats 
may not prove more valuable to feed than another of greater 
weight, because of excess of some of the more valuable elements. 
Series of 1888. The yield on plat E is so large that it throws 
the comparison somewhat out of accord with appearance, as indi- 
cated by the notes on growth. Notwithstanding this great yield, 
for the two years the plats A, B and D have given respectively 
twenty-one, twelve, and four per cent more hay than HE, while 
plat H has more than held its own. 
Comparing the adjacent plats with the others left unmanured, 
shows an unmistakable gain for the manured plats, except L, 
which yielded less than any unmanured plat. 
Making comparison of every fertilizer plat with the mean of the 
three unmanured, shows a gain in every case except that of plat L. 
This gain ranges from two per cent on plat D to twenty-one per 
cent on plat I. In the cases of plats F, H, I, and perhaps K, the © 
yields seem to have been pushed forward by an increased per- 
centage of clover as compared with Timothy. This is indicated 
by the higher per cent of moisture as well as by notes on 
appearance. _ 
The applications of nitrogen alone seems to have had its great- 
est effect the first season. The after effect was seen in the 
absence of clover, and in a larger than average growth of Timothy, 
which did not amount to substance enough to make up for the 
loss of clover crowded out, and to give a very decided increase of 
crop this second year over the unmanured plats. The increase 
from only one plat, A, of this series, has been sufficient to pay for 
the application of the top dressing. 
PLATS FERTILIZED IN 1889. 
These plats were fertilized in order to confirm the results of last 
season. If our soil needs nitrogen, we may expect similar results 
for another season, when different meteorological conditions might 
show a different result, if the demand for nitrogen is not urgent. 
_ Another series of plats of the same size, one twelfth of an acre, 
has been laid off in the same field and near by the first series. 
Six of these plats A-F, lie alongside the first series on the south, 
36 
