I. Introduction: Tarnished plant bug (TPB)
covered in more detail in the Peach
Details specific to apple are included here.
Tarnished Plant Bug, Lygus lineolaris (Palisot de
Beauvois) on Apple
II. Injury: Feeding in apple that occurs before bloom
results in buds abscising early and
is rarely a problem. If feeding occurs after fruit set, fruit
deformation will result (Plate 32). Injury
usually consists of a discrete dimple, a deeply sunken conical
the side of the fruit. In some
orchards this is the most important insect damage to fruit at
III. Monitoring: A white visual trap (Plate 33) is
monitoring the TPB on apple.
These sticky 6x8 inch (15.2x20.3 cm) traps are set out at silver
and checked weekly. Traps should
be placed near the edge of the block, at one per 3-5 acres
ha). Hang traps at about 2 feet
(0.6 m) in height, from an outer branch. There should be an area
about 12 inch (30 cm) radius cleared
of foliage. Ground vegetation nearby is desirable, but it should
obscure the trap. Remove traps at
petal fall. Massachusetts research supports an economic injury
2.4 adults per trap by tight
cluster, or 4.1 per trap through late pink.
This is taken primarily from a chapter by L.
Hull, D. G. Pfeiffer & D. J. Biddinger on apple direct pests,
reprinted with permission from Mid-Atlantic Orchard Monitoring
NRAES, 152 Riley-Robb Hall, Ithaca, New York 14853-5701.
Back to Apple
Return to Mid-Atlantic