322 FORAGE CROPS 
high a proportion of phosphoric acid and too 
low a proportion of nitrogen for the production 
of timothy hay upon the soil and in the climate 
under consideration. It would probably be best 
for the farmer to buy the separate ingredients 
and mix them himself. The following mixture 
or its equivalent is recommended, nitrate of 
soda, 200 pounds; 16 per cent acid phosphate, 
100 pounds, and muriate of potash, 80 per cent 
purity, 50 pounds. Whether this quantity should 
be applied per acre, or a greater or less quantity, 
can best be determined from the history of the 
land and the appearance of the meadow from 
year to year. In the experiments under consid- 
eration, only acid phosphate has been used as a 
source of phosphoric acid, although experiments 
at the Pennsylvania and Illinois Stations indi- 
cate that finely ground phosphate rock may, in 
the course of a rotation, be equally useful.” 
PERMANENT PASTURES 
The treatment of permanent pastures follows 
the same general procedure as for permanent 
meadows. In many parts of the country, past- 
ures occupy the rougher areas of the farm. In 
some instances they are too wet, in others too 
rough, and in practically all cases no attention 
is given to their improvement, either in the way 
