8 
COLOKAIK) P]XPE1{IMENT STATION 
to keep a leaf growth above the ground. One year of thorough treat- 
ment of tliis type should so Aveaken the plant that the second year 
a cultivated -crop such as potatoes, sunfloAvers, or corn could be 
groAvn and given thorough clean cultivation, with special care that 
no perennial peppergrass plants are allowed to grow. The objec- 
tions to this method are that it sacrifices one year’s use of the 
land and that it requires constant attention and thorough cultiva- 
tion regardless of other farm work. This practically means that 
the method will never be successfully used except in individual 
cases. It is, hoAvever, AAdien used, a most reliable method. 
Second — A method which has been suggested is to plow the field, 
fence it, and turn in some hogs with noses in working condition. If 
enough hogs are used they will dig up the patch and eat the ma- 
jority of the root stalks. The pasture should be watched and, if 
Plate III — An expensive but sure method of eradication. 
