A Diagnostic Guide is designed to help you identify a pest issue and management solutions. Diagnostic Guide JAPANESE japonica TREES AT RISK Japanese beetles feed on a number of common shade trees, shrubs, woody ornamentals, fruit and vegetable plants. Japanese beetles attack over 300 species including: linden, crape myrtle, flowering crabapple, Norway , Japanese maple, flowering cherry, , sycamore, black walnut, horse , and gray .

Linden Crabapple Norway Maple American Elm Birch Crape Myrtle

SIGNS OF DAMAGE PHYSICAL APPEARANCE Individual leaves are missing Adults are 3/8 “ long with a leaf tissue between the leaf metallic green head and thorax, veins causing a lace-like and copper-brown wing covers. skeleton appearance. Adult have a row of five white hair tufts projecting from Leaf damage under each wing cover and Japanese beetle two more at the rear tip of the adult abdomen. Larvae are white, C-shaped grubs 1/16 “ - 1/4”. These grubs can be significant turf pests. Canopy symptoms

Japanese beetle larvae Turf damage from grubs

Tech support: www.treecarescience.com | [email protected] | 877-272-6747 ©2015 Rainbow Treecare Scientific Advancements TREATMENT STRATEGY Soil applications of Xytect™ or Lepitect™ will provide acceptable levels of stand-alone control. However, if there exists a low threshold for leaf damage or if infestations are high consider combining soil applications with a foliar spray tank mix of Xytect™ and Tengard™ during adult flight period (July-August).

Spray treatments are required once adult feeding occurs on trees that have not been treated preventively. Tank mixes of Xytect™ and Tengard™ will provide a high level of control for 14-21 days. Sprays should begin at the early onset of adult feeding. Protecting trees against the early feeding is extremely important. Japanese beetles are attracted to trees that are being fed on by other beetles, so keep- ing them from feeding initially is important.

PRODUCT APPLICATION METHOD DOSAGE TIMING RE-TREATMENT

Xytect™ 2F Soil injection 6 mL per inch DBH Late fall or Annual early spring

Lepitect™ Soil injection 0.2 oz per inch DBH Early June to provide Annual protection into August.

Xytect™ 2F & Tengard™ Foliar spray 1.5 oz Xytect™ per 100 gal When beetles are present. Reapply at 14-21 day water and 8 oz Tengard™ intervals

TREATMENT EXPECTATIONS When the soil applied systemic products Xytect™ or Lepitect™ are used, the beetles may continue to feed, but they die soon after. Some defoliation should be expected even on treated trees. From a distance trees will look fine; when viewed close-up you will see some damage.

Combine soil applications with foliar spray applications for those with low tolerance for leaf damage or in areas that have a history of severe infestations.

Feeding adult beetles attract more adult beetles to attack.

BIOLOGY

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Always refer to product label for all rates and approved uses. Tech support: www.treecarescience.com | [email protected] | 877-272-6747

©2015 Rainbow Treecare Scientific Advancements