Page 18 - 2017 Griffin Gazette Issue 4
P. 18

BCAs are living, breathing organisms,
                                                                             so it’s important to care for them
                                                                             properly prior to and during release.

                                                                             The table below details information regarding storage and release
                                                                             of some popular BCAs that will help to maintain health and viability.
                                                                             Always unpack your BCAs immediately upon arrival, verify viability and
                                                                             report concerns back to Griffin as soon as possible.

BCA Product How to Check Viability                              How to Store                              How to Release

Aphidius colemani    Select aphid mummies without exit          Store unopened blisters out of            Place opened blister packs in the crop
Blister packs        holes from the blister pack. Place in a    direct light at 43-46°F and release       canopy (shaded from the light source)
                     ventilated, clear container at 70˚F away   within 18 hours of receipt.               and allow the adults to emerge naturally.
                     from direct light. Assess emergence
                     after 7 days by observing mummies for
                     exit holes or counting adults.

Aphidius ervi        See viability notes for A. colemani.       Store unopened bottles out of             Open the bottle in the production space
Bulk mummies                                                    direct light at 43-46°F and release       to allow emerged adults to move into the
                                                                within 18 hours of receipt.               crop. Release late in the day or under
                                                                                                          reduced light levels in a shaded area.
                                                                                                          Replace the vented cap on the container
                                                                                                          and store the bottle at room temperature
                                                                                                          out direct light. Repeat the releases once
                                                                                                          per day until all adults have emerged.

Dalotia coriaria     Scatter a small sample from the            Store unopened containers in a            Release late in the day or under reduced
                     container on white paper. Observe          dark location at 50-60˚F. Release         light. Place small piles of 25-50 Dalotia
aka Atheta coriaria  active movement in adults and larvae.      within 48 hours of receipt.               with the carrier on the surface of the
                                                                                                          potting media, at various locations in
Bulk larvae and                                                                                           the crop to achieve the desired release
adults                                                                                                    rate. Alternatively, make piles directly on
                                                                                                          the greenhouse floor or in pots of media
                                                                                                          under benches. For breeder boxes,
                                                                                                          request the GGSPro bulletin.

Hypoaspis miles      Scatter a small sample on white paper      Store at 50-60˚F. Release within          Apply to growing media at end of day or
Bulk mites           and observe mite movement under            24 hours of receipt.                      under low light conditions.
                     magnification.

Amblyseius           Option 1: Clip a sachet to a binder clip,  Crack open the box of sachets             For hook sachets, hang sachet in the
andersoni,           set the flat side of the clip on a sticky                                            crop canopy, out of direct light. For stick
A. cucumeris,        card and watch for the mites to spread     to prevent   buildup of  bCoOx 2ouatnodf  sachets, simply insert the stick into the
A. swirskii and      out on the sticky card.                    heat. Store  the opened                   media so the bottom of the sachet just
Neoseiulus                                                                                                barely touches the media.
californicus         Option 2: Cut open the sachet, sprinkle    direct light under moderate
Sachets              contents on white paper and observe
                     activity under a microscope.               humidity at temperatures of
Neoseiulus fallacis
                                                                50-60˚F for several days. Best if
Bulk mites
                                                                placed in crop within 18 hours

                                                                of receipt.

                     See H. miles.                              See H. miles.                             Rotate container to mix carrier and mites
                                                                                                          uniformly, then sprinkle over crop foliage.

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