Page 14 - Griffin Gazette Spring 2017
P. 14

                                                                         it Clean

                                                                         SANITATION FOR CEA CROPS

                             By Tami Van Gaal, CEA Division Leader       be treated include benching, floors, walls, irrigation lines and any
                                                                         containers or other crop supports that will be reused.
                             Growers of Controlled Environment
                             Agriculture (CEA) crops face the same       Regardless of the surface treated, end of crop sanitation is always
                             sanitation needs as their ornamental        a three-step process: 1) Physical cleaning, 2) Chemical cleaning/
                             counterparts: Preventing the introduction   rinse and 3) Sanitizing. First, physically remove as much debris as
                             of pests (pathogens, insects and mites)     possible from benching and floors. When reusing pots, brush or
                             from new plant material entering the        scrub the pots to remove any remaining media and plant material.
                             greenhouse, preventing the spread of pests  Next, chemically clean to ensure that the surface is truly ready for
                             that become established during production,  sanitizing. You wouldn’t skip the soap when washing your hands,
                             controlling algae in the production space,  so don’t skip the cleaner when washing your benches!
and preventing carryover of pests between crops. The catch for
CEA growers is that their crops and/or their production spaces           CEA growers can choose between two products for chemical
can limit product-use options. Fortunately, there are effective          cleaning. Strip-It is an acid cleaner, suitable for use in greenhouse
products labeled for use with edibles and for use in typical CEA         structures where spaces are large and air exchange is good.
production spaces. Information below details recommendations             Horti-Klor is an alkaline cleaner, used for cleaning warehouse
for surface sanitation in production spaces. Best practices to           production spaces and produce packing rooms. Horti-Klor can
minimize introducing pests to the production space and preventing        also be used in a greenhouse, but Strip-It should not be used in
movement of these pests through the space during production              smaller, enclosed spaces commonly found in warehouse settings.
are outlined in the digital bonus content of the online version of       Either product can be applied to benching, concrete floors,
the Gazette.                                                             evaporative cooling pads, greenhouse glazings, gravel floors and
                                                                         other non-porous surfaces, including most structural insulated
Best Practices for Cleaning Hard Surfaces                                panels. Application with a foamer provides ideal contact. Use
Surface sanitation between crops will drastically limit pest             either product at a rate of 5 oz/gal, allowing a wet treatment time of
carryover to future crops, help to limit development of algae and        3-5 minutes, followed by a rinse.
greatly minimize the growth of biofilm in irrigation lines. Surfaces to

14 | Griffin Gazette Spring 2017
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