COMPARATIVE YIELDS OF GRASSES. 197 
soil, timothy for two years gave 1.76 tons and bromus 1.15 
tons, or about 64 percent. This fairly represents the rela- 
tive value of the two grasses on soils adapted to timothy. 
The comparison on sandy soils is probably in this case a lit- 
tle too much in favor of the bromus. Bromus when sown in 
a mixture, with timothy, will persist from year to year, but 
will not increase, to form a very large portion of the crop. 
While the seed remains expensive its usefulness is limited in 
this region, though it might be tried on asmall scale for 
pasture mixtures. 
Timothy through the cheapness of the seed, and good 
quality of hay for horses, is the most universally used of any 
grass. But no grass depends more on the moisture and fer- 
tility of the soil, for the production of agood crop. The ideal 
soil for timothy is quite moist, rich clay orloam. Impover- 
ished, sandy or droughty soils produce very light crops. 
Witness Table CI on soil that had been in potatoes three 
years, where the timothy gave an average for three years of 
but .74 tons. In Table CII the average, on low soil well 
supplied with moisture, is 1.76 tons for two years, while in 
Table CIII, on new land, low, and five years from breaking, 
2.17 tons were obtained in 1902. Timothy will do well on 
all land adapted to grass, but on land that is sandy, hilly 
and droughty, good results will not be obtained in all cases. 
Red top has compared favorably with timothy in all of 
the tests, as the tables show. It flourishes best on moist 
land, and is a valuable addition to a mixture for meadow or 
pasture, with timothy. Agropyrum, or slender wheat grass 
has been tried twice, with the plots. It produces a slim 
stalk without much foliage and a wiry rather impalatable 
hay. The vield is fair compared with timothy and it will be 
tested further, especially on poor soil. 
The results obtained with clover are the most striking, 
and important, of all the work done upon the Experiment 
Farm. Clover has the power of restoring fertility to worn 
out soils, by taking nitrogen from the air and storing it in 
its roots. If clover can be grown with certainty, it will 
make the difference between success and failure on much of 
the lighter land. The growing of clover on the farm has 
been a success from the first year. In seven years there has 
