Issue link: https://read.dmtmag.com/i/787641
www.goodfruit.com GOOD FRUIT GROWER FEBRUARY 15, 2017 19 found that some areas of the cold storage room showed little change in Listeria after normal cleaning practices, including damaged floors, bumpers and HVAC systems; again, aggressive cleaning and sanitizing practices reduced the frequency of positive Listeria samples. In addition, the floor scrubber used for the cleaning tested positive for Listeria and could serve as a source of contamination. "Attention to cleaning equipment is essential to limit cross contamination," Hanrahan said. • Aggressive cleaning makes big difference NORMAL CLEANING DOOR DAMAGED WALLS WALLS DAMAGED FLOORS FLOORS HVAC BUMPERS 0% 100% AGGRESSIVE CLEANING A study comparing normal and aggressive cleaning methods in cold storage rooms found the aggressive technique, which included a chlorinated pressure wash, resulted in a dramatic reduction in the number of positive generic Listeria samples. After normal cleaning, some of the areas — bumpers, HVAC systems and damaged floors — had a higher percentage of positive samples than before the cleaning. positive sampes before cleaning after cleaning DOOR DAMAGED WALLS WALLS DAMAGED FLOORS FLOORS HVAC BUMPERS 0% Percent of presumptive positives. (center of chart is 0%, dashed line is 100%) 100% SOURCE: WASHINGTON TREE FRUIT RESEARCH COMMISSION positive sampes before cleaning after cleaning TerraStart, the preplant non- fumigant alternative for control of soil-borne plant pathogens and nematodes. NEW ! Step 1 Out with the Bad, preplant with TerraStart Step 2 In with the Good with TerraGrow to reestablish a strong, beneficial population Step 3 Treat throughout the growing season with TerraClean 5.0 Scan to learn more 1.888.273.3088 | biosafesystems.com 1611 W Ahtanum Union Gap WA 98903 Paul Clark Phone: (509) 457-9196 Ext 101 3766 Iroquois Wenatchee WA 98801 John Vickery Phone:(509) 662-2753 Ext 201