| imageID: | 17725 |
| Description: | A 20 inch d.b.h. blackjack with about 10 percent of the upper crown killed by Cronartium filamentosum |
| Keywords: | limb rust forest pathology |
| Organisms: | ponderosa pine |
| Original collection id: | 1510 |
| Media: | B&W print 4 x 5 in. and safety negative |
| Collection: | RMRS Archive Images |
| Quality: | 3 |
| Location: | Apache National Forest; AZ; United States |
| Date(mm/yyyy): | 7/1951 |
| Comments: | This tree was left in a recent cut-over area and may live for 20 years but its growth will be greatly reduced and it will soon be dead-topped. Picture used in the Apache National Forest Cronartium filamentosum Rust survey by F.G. Hawksworth. |
| Citation: | Use of this image is governed by Creative Commons CC BY. If you use the image, please include the following citation: USDA Forest Service. 2007. Forest Service Research Image Library. Fort Collins, CO: Forest Service Research Data Archive. https://www.fs.usda.gov/rds/imagedb |
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