- 7 



of the container into the formalin. There will be a vio- 

 lent boiling and clouds of gas will come up. Do it at 

 arms length and with the face turned away to avoid possi- 

 ble spattering or a face full of gas. Go without delay 

 from one container to the next closer to the door and out 

 Close the door. That's it. 



After 24 hours open the storage and ventilate. Do not 

 Ente r or store produce in it until there is No T race of 

 Tormal dehyde . Formaldehyde is absorbed in water 

 will continue to be released until the water and 

 in the storage is dried out and the storage is 

 ai red. 



and it 

 moi s ture 

 thoroughly 



Other things a grower can do to reduce loss from blue mold rot 

 in storage - pick before apples are fully ripe, avoid injuries and 

 bruises, and get them into storage and cooled down without delay. 



*************** 



ILUE MOLD APPLE STORAGE ROT, DIP TANKS AND 

 WATER DUMPERS AND WASHERS 



C.J. G i 1 g u t 

 Department of Plant Pathology 



Every apple box or apple with blue mold on it which is dunked 

 or immersed in the tank leaves blue mold spores in it. By the end 

 of the day, the tank can have quite a load. And eyery apple dipped 

 in the tank will have blue mold spores and other rot spores on it 

 which will be carried into the storage and cause rot later. 



Growers have included apple fungicides in the dip solution in 

 an effort to reduce storage rot. They doubt that it does much good 

 when they find substantial amounts of storage rot later. 



Some recent work on effect of fungicides in dip solution on 

 storage rots by Dr. M. Szkolnik, at the New York Agricultural Ex- 

 periment Station at Geneva, is of interest. 



Mcintosh and Cortland apples were rolled on a board with two 

 nails projecting 3/16 of an inch to simulate stem punctures and the 

 injured apples placed in steam sterlized boxes and dipped in the 

 solutions. After draining, the injured apples were transferred to 

 steam sterilized trays, with the two injuries per apple exposed, 

 and sprayed with a heavy suspension of spores of storage rot fungi. 

 The trays of inoculated apples were placed in storage at 34 F. 

 Blue mold rot readings were made on Mcintosh in February and on 

 Cortlands in March. 



