Whole-plant gas exchange was measured continuously for 24 h on rooted cuttings of Girard’s ‘Pleasant White’ azaleas. Azalea treatments were azalea lace bug, Stephanitis pyrioides (Scott), feeding injury levels that averaged 6, 13, or 31% leaf-area injury throughout the plant canopies. Gas exchange parameters, including net photosynthesis, dark respiration, carbon use efficiency, and growth, were compared with undamaged control plants. Responses of Girard’s ‘Pleasant White’ azaleas suggested that azaleas were tolerant of lace bug feeding injury levels above the aesthetic threshold. Azalea tolerance can be incorporated into an integrated management plan to reduce chemical inputs into the urban landscape.
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1 April 2000
Whole-Plant CO2 Exchange Measurements on Azaleas Injured by Azalea Lace Bug (Heteroptea: Tingidae) Feeding
W. E. Klingeman,
M. W. Van Iersel,
G. D. Buntin,
S. K. Braman
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Journal of Economic Entomology
Vol. 93 • No. 2
April 2000
Vol. 93 • No. 2
April 2000
azalea lace bug
carbon use efficiency
photosynthesis
respiration
Rhododendron
Stephanitis pyrioides