PICTURE the Damage!

Herbicide Damage Symptoms on Ornamentals

500+ four-color images are categorized by plant and herbicide. To diagnose plant damage, simply select the plant you want to see, then choose the herbicide you suspect caused the damage. If the pictures don't match the damage on your plant, it's easy to go back to the main menu for another try.

Developed by Purdue University Extension specialists, PICTURE the Damage! is a Kodak Portfolio CD that can be viewed from a CD-ROM-equipped computer (either MacOS or Windows) or from an ordinary TV screen equipped with a Kodak Photo CD player.

Price: $39.95 (Indiana residents add 6% sales tax) - Order Form

Michael Dana, Horticulture Specialist
Sharon Katz, Graphic Designer & Programmer
Ricky Kemery, Photographer
Laura Hoelscher, Text Editor
Troy Brown, Graphic Designer

and was produced with support from

Purdue Pesticide Programs, the National Agricultural Pesticide Impact Assessment Program, and the Indiana Association of Nurserymen.

Twenty-one taxa of containerized plants (2 plants of each taxon per herbicide treatment) were acquired from nursery sources in Indiana and Illinois¹ during June and July, 1992. The herbicides selected provided a sampling of those used in landscape, turfgrass, and field-crop management.

Plants were held in containers, and all herbicides, except Pramitol, were foliar applied in late July, at a 1/8th dilution of full label-rate to simulate drift, using a CO₂ backpack spray system. Pramitol was applied as a soil drench. Symptom development two weeks following the dilute application was very limited, so a second application of full-rate herbicides was made.

Several herbicides showed little symptom development following the second application. Plants were carried over until the following spring for a repeat attempt at generating damage symptoms. Plants were lined-out during October, 1992, for overwintering,

Another application of full-rate herbicide was made in mid-June, 1993, and the symptoms recorded. Prior to the spring 1993 application, during April and May, some symptoms, apparently caused by herbicide carryover from the previous late summer application, were observed and recorded. They are indicated by the label (carryover) on the CD captions.

As damage symptoms were observed, they were photographed using a Nikon FM camera with a 55mm micro-NIKKOR lens and Fujichrome Velvia transparency film under ambient, sunlit conditions. Transparencies were digitized into Kodak photo CD format.

¹Plants were contributed by LaPorte County Nursery/Landscaping Service, Inc., LaPorte, IN; Midwest Graundcovers, St. Charles, IL; Cunning/tam Gandens, Inc., Waldnon, IN; and C M Hobbs & Sons, Inc., Indianapolls, IN

Table 1

Ornamental plants in PICTURE THE DAMAGE! *

* The species (Table 1) and herbicides (Table 2) are represented on the CD by common names.

Table 2

Herbicides causing symptoms in PICTURE the Damage!*

* Reference to herbicide products in Table 2 is not intended to be an endorsement or indictment.

** The names of the products tested in Table 2 are trade names registered by the appropriate companies.