Share

Small Fruit Pesticide Label Change

Posted: January 23, 2011

Several changes to pesticide labels have occurred since late fall 2009, when the 2010 Mid-Atlantic Berry Guide went to print.

Kathy Demchak, Penn State Department of Horticulture

General

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

Subtraction

Endosulfan (trade name Thionex, and formerly Thiodan) use is being terminated due to concerns about worker safety and endosulfan’s ability to accumulate in the food chain. Existing stocks of Endosulfan may still be used. 

Additions

Portal® (fenpyroximate, Nichino America, Inc.) is labeled for use on the low-growing berry subgroup, which includes strawberries. Use of this product is limited to two applications per season at least 14 days apart to avoid resistance development. Fenpyroximate is in IRAC activity group 21A, which is different from other activity groups labeled on strawberries. The pre-harvest interval (PHI) is 1 day, and the re-entry interval (REI) is 12 hours.  

Altacor® (chlorantraniliprole, aka rynaxypry®, Dupont) is labeled for use on caneberries  (raspberries, blackberries, etc.) for the target pests omnivorous leafroller (not a problem in PA) and raspberry crown borer (adults), which can be a problem here, most frequently on blackberries. The PHI is 3 days, and the REI is 4 hours.  

Danitol® 2.4EC (fenpropathrin, Valent) is labeled for use on caneberries,(besides strawberries and blueberries on which it had already been labeled) with the most utility against Japanese beetle. It also is labeled for use for 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 3 days, and the REI is 24 hours.