Herbicide Injury Symptoms on Landscape Plants; A Photo CD-ROM Image File

in HortScience
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  • 1 Dept. of Horticulture, Purdue Univ., West Lafayette, IN 47907-1165

Damage caused by misapplication of herbicides in landscape management or drift from agricultural fields on to nearby landscape plantings is often difficult to diagnose. Symptoms may vary with herbicide, species that is damaged, and other factors. To address this need, a photo CD-ROM has been developed to help plant damage diagnosticians determine if damage has been caused by herbicides. Fourteen herbicides or herbicide combinations commonly used in turfgrass, landscape, or field crop production applications were applied to 21 taxa of landscape trees, shrubs, groundcovers, or herbaceous perennials. More than 800 photographic transparencies of damage symptoms (representing all 21 taxa and 12 herbicides) were taken, and 457 were selected for storage in the digitized photo CD format for rapid retrieval. In all cases, as damage symptoms were observed, they were photographically recorded using a Nikon FM camera with a 55-mm micro-NIKKOR lens and Fujichrome Velvia transparency film under ambient, sunlit conditions. Species and plant taxa lists are displayed and the CD-ROM is demonstrated.