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displaying greater than 30% disease damage, insect herbivory or sunburn damage). However, in both years, there was no unmarketable fruit. Average cluster weight was calculated by dividing fruit yield per vine by the number of clusters harvested per vine

for all treatments were measured on a single vine within each experimental unit during harvest. During both years, yield was divided into marketable and unmarketable fruit (fruit displaying greater than 30% disease damage or insect herbivory). However

insect herbivory or fungal invasion. These responses all require significant modification of many phytohormones and energy to be performed. The preventative responses may only serve as a benefit to the plant if the plants are subsequently attacked by a

, and defense against ultraviolet light, pathogens, insect herbivory, and other biotic and abiotic stresses ( Benoit and Berry, 1997 ; Berhow and Vaughn, 1999 ; Brignolas et al., 1998 ; Murphy et al., 2000 ; Ryan et al., 2002 ). Subtropical peaches

.F. Shure, D.J. 1994 The influence of light and nutrients on foliar phenolics and insect herbivory Ecology 75 86 98 Eigenbrode, S.D. Shelton, A.M. 1990 Behavior of neonate diamondback moth larvae (Lepidoptera: Plutellidae) on glossy-leafed resistant