caa a22 4500 397572220 CHVBK 20180308164844.0 cr unu---uuuuu 161202e19960601xx s 000 0 eng 10.1093/ee/25.3.611 doi (NATIONALLICENCE)oxford-10.1093/ee/25.3.611 Insect Infestations and Incidence of Western Gall Rust Among Ponderosa Pine Sources Grown in the Central Great Plains [Elektronische Daten] [Mary Ellen Dix, Mark Harrell, Ned B. Klopfenstein, Kristen Barkhouse, Rudy King, Randy Lawson] Six seed sources in two 22-yr-old ponderosa pine, Pinus ponderosa variety scopulomm Engelmann, provenance plantings in Hastings, NE, and Alliance, NE, were evaluated for abundance of Rhyacionia bushnelli, Retinia metalliea, Dioryctria spp., and Peridermium harknessii. The 6 sources were selected for this study based on superior growth and previous susceptibility or nonsusceptibility to the aforementioned insects and pathogen. Infestation levels per tree and per branch, and proportion of infested tips were used to evaluate the influence of source on pest abundance. Abundance of the pests varied with planting. In both plantings, R. bushnelli abundance was lower on the 3 taller sources (720, 721, 757) than on the 3 shorter sources (764, 833, 835) similar to what was observed previously. The abundance of current and old R. metallica was low in both plantings and did not vary with source. At the Alliance planting, taller sources had more total Dioryctria spp. than shorter sources. P. harknessii galls were present on every sampled tree in the Hastings planting and occurred only on a few trees sampled at Alliance, but no source differences were detected. Abundance of R. bushnelli was positively correlated with previous-year R. metallica at Alliance and current-year R. metallica at Alliance and negatively correlated with P. harknessii abundance at Hastings. Interactions among environmental, host, and insect factors probably account for these correlations. © 1996 Entomological Society of America Population Ecolocy nationallicence Rhyacionia bushnelli nationallicence Retinia metallica nationallicence Dioryctria nationallicence Peridermium harknessii nationallicence Pinus ponderosa nationallicence Dix Mary Ellen USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, National Agroforestry Center, University of Nebraska, Lincoln, NE 68583-0822 aut Harrell Mark Department of Forestry, Fisheries and Wildlife, University of Nebraska, Lincoln, NE 68583-0814 aut Klopfenstein Ned B. USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, National Agroforestry Center, University of Nebraska, Lincoln, NE 68583-0822 aut Barkhouse Kristen Animal Science Department, University of Nebraska, Lincoln, NE 68583-0908 aut King Rudy USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO 80526-2098 aut Lawson Randy Biology Department, Chadron State College, Chadron, NE 69337 aut Environmental Entomology Oxford University Press 25/3(1996-06-01), 611-617 0046-225X 25:3<611 1996 25 ee https://doi.org/10.1093/ee/25.3.611 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.3.611 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dix Mary Ellen USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, National Agroforestry Center, University of Nebraska, Lincoln, NE 68583-0822 aut NATIONALLICENCE 700 1- Harrell Mark Department of Forestry, Fisheries and Wildlife, University of Nebraska, Lincoln, NE 68583-0814 aut NATIONALLICENCE 700 1- Klopfenstein Ned B. USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, National Agroforestry Center, University of Nebraska, Lincoln, NE 68583-0822 aut NATIONALLICENCE 700 1- Barkhouse Kristen Animal Science Department, University of Nebraska, Lincoln, NE 68583-0908 aut NATIONALLICENCE 700 1- King Rudy USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO 80526-2098 aut NATIONALLICENCE 700 1- Lawson Randy Biology Department, Chadron State College, Chadron, NE 69337 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/3(1996-06-01), 611-617 0046-225X 25:3<611 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford