14 BULLETIN 45, HAWAII EXPERIMENT STATION. 
than a few days, and is best prepared fresh as needed. For use 
dilute the solution to 50 gallons. 
Since Milestone may be more readily obtained than copper car- 
bonate, the formula for another soil fungicide, eau celeste, is given. 
Bluestone (copper sulphate) pounds.. 2 
Ammonia pints.. 3 
Water to make gallons 50 
Dissolve the bluestone in a gallon of water. When dissolved, add 
the ammonia to it. Transfer to bottles that can be tightly corked if 
the solution is not to be used at once. For use dilute to 50 gallons. 
A half-teacupful of either of these solutions sprayed in time at the 
base of each plant is said to protect the plant against Sclerotium wilt. 
Poison baits for army worms. — Where an invasion of army worms 
comes from adjacent grassland, cultivated fields may be protected 
by surrounding with a line of poison bait or establishing such a line 
along the threatened side. Ditches sprinkled with lime serve the 
same purpose. 
Paris-green bran mash as bait for cutworms. — With 25 pounds of 
bran thoroughly mix while dry \ pound Paris green. To make the 
bait attractive chop fine six lemons or waste citrus product, papaya, 
etc.. and add to the mixture, or add a quart of cheap molasses. 
Thoroughly mix and add sufficient water to moisten the mixture, but 
not enough to make it sloppy and thus interfere with its easy and 
economical distribution. 
Arsenate of lead may be substituted for the Paris green, using 
four to six times as much, or of white arsenic half as much as of 
Paris green may be used. 
Criddle mixture for cutworms. — The following formula is largely 
quoted as an effective bait for cutworms. As a cheap substitute for 
cereal baits it is well worth trying. 
Fresh horse dung pounds.. 60 
Salt do 2 
Paris green pound.. 1 
The Paris green is mixed with enough water to form a thin paste 
and it is then thoroughly mixed with the horse dung. 
HANDLING, SORTING, GRADING, AND STORING. 
To prevent bruising, potatoes should be carefully handled at all 
times. The slightest wound is sufficient to open the way for the 
entrance of rot-producing organisms. Care in handling is especially 
necessary at digging time when the skins are tender. 
All bruised and rotted tubers should be sorted out before shipping 
or storing, and if the crop is to be stored any length of time re-sorting 
