1i» 



Industry Practices 



The Tree Fruit Research Commission worl<ed together with the USOA-ARS 

 laboratory in Yakima, Oregon State University, and commercial chemical labs 

 to determine the levels of chemical residue found on fruit following custo- 

 mary postharvest commercial application techniques. These very 1 imi ted 

 tests have shown that in most cases the chemical residue is well below that 

 of even the strictest licensing countries. 



In some cases, the residue found on fruit was of an insufficient quan- 

 tity to control the target disease or disorder. Further study indicated 

 that it was not a question of improperly mixing the solution, but rather a 

 faulty application rate. Poor nozzle configuration and plugged nozzles 

 resulted in insufficient chemical being applied. Full coverage is 

 necessary. Table 3 lists the residue levels of certain chemicals to control 

 diseases and disorders. 



A summary of this study's findings on Benlate is included in this issue 

 of Fruit Notes . 



(Reprinted with permission from the Postharvest Pomology Newsletter , 

 November, I985, Washington State University, Cooperative Extens ion. ) 



***** 



POMOLOGICAL PARAGRAPH 



Wi I 1 iam J. Lord 



Department of Plant and Soil Sciences 



University of Massachusetts 



Pi sinfect cul 1 bins . Fungus spores in boxes and bins can be a source 

 of inoculum to infect the current crop of apples when they are treated with 

 a scald inhibitor after harvest. A fungicide with the scald inhibitor will 

 reduce but not completely eliminate the hazard of rot. Therefore a 10 per- 

 cent chlorox spray is suggested to disinfect empty cull boxes and bins. 



