Category:Photographs by Walter J. Buckhorn

Media in category "Photographs by Walter J. Buckhorn"

The following 25 files are in this category, out of 25 total.

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  1937. Ponderosa pine stump section showing tree growth rings and fire scars from 1255-1930. Deming Creek. Bly, Oregon. (34049117104).jpg 1,955 × 1,409; 374 KB
  
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  1937. Ponderosa pine stump section showing tree growth rings and fire scars from 1255-1930. Deming Creek. Bly, Oregon. (34049124174).jpg 1,376 × 1,991; 359 KB
  
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  1937. Ponderosa pine stump section showing tree growth rings and fire scars from 1680-1930. Deming Creek. Bly, Oregon. (34505232180).jpg 1,343 × 1,952; 373 KB
  
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  1937. Ponderosa pine stump section showing tree growth rings and fire scars from 1720-1920. Pringle Falls, LaPine, Oregon. (34851943776).jpg 1,379 × 1,964; 361 KB
  
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  1937. Ponderosa pine stump section showing tree growth rings and fire scars from 1810-1930. Round Lake Unit. Klamath Falls, Oregon. (34851937926).jpg 1,409 × 1,958; 387 KB
  
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  1941. Damage to ponderosa pine poles by caterpillar logging. Cut in March 1941. Wolf Creek. Ochoco National Forest, Oregon. (40712589601).jpg 1,325 × 925; 377 KB
  
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  1941. Group killing of ponderosa pine reproduction by Ips oregoni resulting from road slash pushed against the group of trees. Trees cut in May of 1941. Wolf Creek. Ochoco National Forest, Oregon. (23863871977).jpg 1,321 × 936; 246 KB
  
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  1941. Ponderosa pine silvicultural selection; area 100% cut. Wolf Creek. Ochoco National Forest, Oregon. (38696664272).jpg 1,330 × 946; 311 KB
  
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  1941. Ponderosa pine silvicultural selection; area 80% cut. Wolf Creek. Ochoco National Forest, Oregon. (38696662052).jpg 1,321 × 950; 286 KB
  
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  1946. Douglas-fir tussock moth cocoons on a Douglas-fir sapling. Troy, Oregon. (39315593434).jpg 1,181 × 1,391; 371 KB
  
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  1946. Douglas-fir tussock moth cocoons on twigs of young Douglas-fir. Troy, Oregon. (25154646927).jpg 1,998 × 1,466; 513 KB
  
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  1946. Fading foliage on ponderosa pine infected by Elytroderma deformans needle fungus. Johnson Creek. Ochoco National Forest, Oregon. (25154672177).jpg 1,989 × 1,439; 435 KB
  
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  1946. Fading foliage on ponderosa pine infected by Elytroderma deformans needle fungus. Johnson Creek. Ochoco National Forest, Oregon. (39993815382).jpg 1,998 × 1,430; 453 KB
  
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  1946. Group of ponderosa pine affected by Elytroderma deformans needle fungus. Johnson Creek. Ochoco National Forest, Oregon. (39993811262).jpg 1,861 × 1,315; 501 KB
  
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  1946. Group of young Douglas-fir defoliated by Douglas-fir tussock moth. Troy, Oregon. (28246287619).jpg 1,955 × 1,437; 724 KB
  
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  1946. Group of young Douglas-fir defoliated by Douglas-fir tussock moth. Troy, Oregon. (39993798812).jpg 1,915 × 1,447; 726 KB
  
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  1946. Mature ponderosa pine dying from effects of Elytroderma deformans needle fungus. Johnson Creek. Ochoco National Forest, Oregon. (26152452288).jpg 2,030 × 1,367; 430 KB
  
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  1946. Sawfly (Neodiprion) defoliation. Completely defoliated stem of ponderosa pine reproduction. Near Allison Ranger Station. Ochoco National Forest, Oregon. (26152458388).jpg 1,039 × 1,411; 273 KB
  
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  1946. Sawfly (Neodiprion) defoliation. Partially defoliated ponderosa pine reproduction. Near Allison Ranger Station. Ochoco National Forest, Oregon. (26152462848).jpg 2,017 × 1,453; 691 KB
  
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  1946. Sawfly (Neodiprion) defoliation; effect of spraying with .025% DDT. Partially defoliated and unharmed ponderosa pine reproduction. Allison Ranger Station. Ochoco National Forest, Oregon. (25154682527).jpg 2,000 × 1,445; 633 KB
  
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  1948. Douglas-fir and white fir defoliation. Tupper area. Umatilla National Forest, Oregon. (33368486751).jpg 1,153 × 1,072; 194 KB
  
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  1948. Douglas-fir and white fir defoliation. Tupper area. Umatilla NF, OR. (33113320930).jpg 1,343 × 1,082; 376 KB
  
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  1949. BT-19 releasing spray on western spruce budworm control project. Mt. Hood area, Oregon. (32803855822).jpg 1,419 × 971; 355 KB
  
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  1958. Peter Orr with equipment used to collect hibernating budworm samples. Sumpter, Oregon. (33171237100).jpg 1,082 × 1,469; 152 KB
  
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  C.1927. Dendroctonus valens; Magdalis lecontei; Dendroctonus brevicomis; and Vespamima sequoiae. (38221533801).jpg 1,373 × 1,051; 187 KB