2020 Fruit insecticide registration update

Summary of insecticide and miticide label additions, clarifications and corrections to the 2020 Michigan Fruit Management Guide (E0154).

The following is a review of insecticide and miticide label changes and restrictions to the Michigan State University Extension Bulletin E0154, “2020 Michigan Fruit Management Guide.” Agri-chemical labels and regulations can change quickly, so use this information within the context of each compound's legal label.

Insecticide 2020 label additions, clarifications and corrections

Compound

Label changes/restrictions

Crop

Target pests

Sil-Matrix

Label expansion

Pome and stone fruit, blueberries

San Jose scale suppression, aphids and mites

Verdepryn 100SL

New registration

Pome and stone fruits, blueberries, grapes, caneberries

Lepidopteras, spotted wing Drosophila, fruitworms

Spear-Lep

New registration

Pome and stone fruits, berries

Leafrollers

PQZ 1.87 SC

New registration

Pome and stone fruits, grapes

Aphids, mealybugs, leafhoppers

Mustang Maxx

24(c) label

Tart and sweet cherries

Spotted wing Drosophila

Lorsban

Corteva to phase-out production in 2020, but EPA registration status stands while under review.

New insecticide label information for compounds listed in 2020 E0154

MSU Fruit Management Guide E0154 product numbers are in parenthesis ().

Verdepryn (22) (cyclaniliprole, Cyclapryn) belongs to the diamide class of insecticides, which work on the insect by activating ryanodine receptors, thus preventing muscle contraction. Verdepryn 100SL is registered for use in pome fruits, stone fruits, blueberries, grapes and caneberries for control of a range of pests including leafrollers, codling moth, oriental fruit moth, plum curculio, aphids, pear psylla, grape berry moth, Japanese beetle, Rhagoletis fruit flies, spotted wing drosophila and fruitworms. Cyclapryn has shown to be relatively safe on most beneficials. The maximum yearly amount of Verdepryn that can be applied is 33 fluid ounces per acre (0.22 pounds active ingredient) in pome and stone fruits, grapes, caneberries and blueberries.

PQZ (33) (pyrifluquinazon) is an insecticide in the Pyridine class and is labeled for use on pome and stone fruits for control of aphids, and grapes for control of leafhoppers and mealybugs. Its mode of action is a chordotonal organ TRPV channel modulators (nerve action), placed in the IRAC 9B group. The maximum yearly amount of PQZ that can be applied is 4.8 fluid ounces per acre (0.070 pounds active ingredient). Fourteen-day preharvest interval (PHI) for pome and stone fruit, three-day PHI for grapes.

Spear-Lep (35) (GS-omega/kappa-Hxtx-Hv1a) is a peptide-based biopesticide labelled for pome and stone fruits, blueberries, caneberries, strawberries and grapes for control of a range of leafrollers, aphids, fruitworms and tussock moth. Spear functions as a central nervous system inhibitor, and performance is enhanced when tank mixed with Bacillus thuringiensis (Bts). Spear-Lep has a zero-day preharvest interval and is relatively non-toxic to mammals, birds, fish, honey bees and other beneficial insects.

Sil-Matrix (52) (potassium silicate) is a broad-spectrum pesticide for use in fruit crops, includ­ing but not limited to apples, pears, apricots, peaches, cherries, nectarines, plums, grapes, blueberries, raspberries, blackberries, strawberries and gooseberries. Sil-Matrix provides suppression of mites, aphids and San Jose scale in pome fruits. Thorough coverage is important for control, and 1.0% solution is recommended for insect control. Sil-Matrix is compatible with most commonly used agricultural pesticides. However, avoid contact with glass and remove promptly from glass surfaces. Performance can be optimized by addition of a non-ionic surfactant. Sil-Matrix has an REI of 4 hours and a PHI of 0 days. Do not apply more than 20 gallons per acre (60 pounds active ingredient per acre) per season.

Mustang Maxx (86) (zeta-cypermethrin) is a pyrethroid insecti­cide registered for use on grapes, blueberries, caneberries and pome and stone fruits for the control of many insect pests, includ­ing cutworms, plant bugs, leafhoppers, leafrollers, fruitworms, beetles and fruit flies. This material is highly toxic to bees and is disruptive to natural enemies. Do not apply more than 24 fluid ounces of Mustang Maxx 0.8EC per acre per season, and do not make ap­plications less than seven days apart. A 24(c) Local Needs Label in Michigan allows for up to 24 fluid ounces (0.15 pounds active ingredient per acre) of Mustang Maxx to be applied to tart and sweet cherries (total of six sprays at 4 fluid ounces per acre), with a three-day PHI.

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