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Small Fruit Pesticides -- New Uses

Posted: December 9, 2010

A few new pesticides have become available for use since The 2010 Mid-Atlantic Berry Guide went to print.

Kathy Demchak, Penn State Horticulture

   

First, though, a general note.  On some labels, we now see the mention of the low-growing berry subgroup (Group 13-07G), which includes lowbush blueberry and also strawberries.  The use of this grouping allows materials to be used on crops that previously rarely appeared on pesticide labels.

   

Portal (fenpyroximate, Nichino America, Inc.) is labeled for use on the low-growing berry subgroup, which include strawberries.  Target species are mites including two-spotted spider mites.  A 2(ee) label for cyclamen mites is available, and I'll check on the status of this use in Pennsylvania for the next newsletter.  Use is limited to two applications per season at least 14 days apart.  The pre-harvest interval (PHI) is one day, and the re-entry interval (REI) is 12 hours. 

  

Altacor (chlorantraniliprole, also known as rynaxypry®, Dupont) is labeled for use on caneberries (raspberries, blackberries, etc.) for the target pests omnivorous leafroller and raspberry crown borer (adults).  We don't have problems with omnivorous leafroller in Pennsylvania, but sure do with raspberry crown borer.  The PHI is three days, and the REI is four hours. 

    

Danitol (fenpropathrin, Valent) is labeled for use on caneberries.  Of the pests listed on the label, it would have the most utility against Japanese beetle.  It is also labeled for use against two-spotted spider mites, but the use of broad spectrum insecticides such as pyrethroids (part of the pesticide group into which fenpropathrin falls) is tough on beneficial mites, and thus has often resulted in pest mite flare-ups.  The PHI is three days, and the REI is 24 hours.