THE POTATO-TUBER MOTH. vi 
This method of saving seed potatoes appears so simple, although 
effective, that it is feared that many growers may disregard it. 
To grow all potatoes successfully the farmer should work overtime 
on a cleaning-up campaign which should begin at once on receipt of 
this bullet. Small or useless tubers and tops should be promptly 
cleaned up and burned, and the land should be harrowed to break up 
clods and leave as few hiding places as possible for the moths. All 
weeds and other plants of the potato kind should be destroyed over 
large areas surrounding the potato fields. 
It is particularly urged that potato growers cooperate in this work, 
which will lessen very materially the numbers of moths and hence 
reduce the chances for propagation. Could general cooperation be 
secured by legislation or otherwise it would be possible to restrict 
the distribution of this species to the area which it now occupies or 
to stamp it out where now established. Slipshod methods of raising 
potatoes at such a time as midsummer or early autumn are particularly 
dangerous, and in infested districts it is advisable in many cases to 
raise some crop other than potatoes, because unless protective and 
defensive measures are adopted at once there will be a serious re- 
duction of the potato crop and similar trouble will be experienced 
during seasons to come. 
O 
WASHINGTON : GOVERNMENT PRINTING OFFICE : 1913 
