﻿294 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



scale, red scale, and yellow scale were located in a number of ])laces where 

 they were never thought to have existed. 



In Ventura County the mealy bug was thought to be the only real dan- 

 gerous pest. Purple and red scales were known to exist in only two lo- 

 calities. A tree-to-tree inspection located mealy buy in 6 localities where it 

 was not known to exist. Red scale in two new localities and purple scale 

 in two districts miles from the known infestation. 



Infestations — The owner of every tree or orchard, which is infested with 

 mealy bug, should be served with an official quarantine notice forbidding 

 him to remove, give away, or sell any fruit without first getting a permit 

 from the Horticultural Commissioner, or his deputies. 



Infested fruit cannot by law be shipped to any other district within the 

 State, and it should not be shipped to any citrus district outside of the State, un- 

 less thoroughly treated and hand washed in a 30% solution of denatured alcohol 

 and inspected by a lawful inspector after treatment. To the Eastern market 

 the owner takes his own risks in shipping such fruit. 



Picking Boxes. In a district partly infested with this pest, every box 

 which is used as a regular picking box, or which has ever been in a packing 

 house which handles infested fruit, must be thoroughly disinfected just before 

 entering the orchards. These boxes may be treated in any of three ways, viz., 

 fumigated, emerged in denatured alcohol (30%) or steeped for 20 seconds 

 in water maintained at a temperature of 170° F. 



For fumigating, an air-tight compartment may be constructed in the pack- 

 ing house with a top ventilator at the roof. Four ounces of cyanide per 100 

 cubic feet is sufficient to destroy all life. Tlie boxes should not be removed 

 except when taken directly to the orchards. 



A large tank should be filled with denatured alcohol if this method is 

 to be used to insure the complete immersion of every box. 



If hot water is to be used a constant fire should be kept under the water 

 tank, so as to maintain a constant temperature. 



Picking boxes should not be allowed to be shipped from an infested 

 to a clean district under any circumstances, neither should new boxes filled 

 with fruit be allowed to enter a clean district from an infested area, even 

 liiough the fruit came from an uninfested orchard. All exchanges of fruit 

 or boxes from infested districts must be prohibited. 



Picking Crezvs — A picking crew should not be allowed to work in a 

 district partly infected with mealy bugs unless under these conditions : 



1. All clean orchards must be picked consecutively before entering those 



infested. 



2. Every orchardist must furnish his own ladders, picking sacks, etc. 



3. Every grower having mealy bug in his orchard must furnish the mem- 



bers of the picking crews with jumpers, overalls, and caps to be worn 

 only while picking his own fruit. 



4. .\n intelligent and careful man must direct the movements of the i)ick- 



ing crew to see that the above regulations are carried out. 



