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Web URL(s): | http://www.bioone.org/bioone/?request=get-document&issn=0022-0493&volume=094&issue=06&page=1471 Last checked: 03/29/2016 Access conditions: Item is within a limited access website |
Publication Type:
| Refereed |
Author(s): | Butler, M. D.;
Alderman, S. C.;
Hammond, P. C.;
Berry, R. E. |
Author Affiliation: | Butler: Central Oregon Agricultural Research Center, Oregon State University, Madras, Oregon; Alderman: National Forage Seed Production Research Center, USDA-ARS, Corvallis, Oregon; Hammond and Berry: Entomology Department, Oregon State University, Corvallis, Oregon |
Title: | Association of insects and ergot (Claviceps purpurea) in Kentucky bluegrass seed production fields |
Section: | Field and forage crops Other records with the "Field and forage crops" Section
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Source: | Journal of Economic Entomology. Vol. 94, No. 6, December 2001, p. 1471-1476. |
Publishing Information: | Lanham, MD: Entomological Society of America |
# of Pages: | 6 |
Keywords: | TIC Keywords: Claviceps purpurea; Poa pratensis; Chrysoteuchia topiaria; Ergot; Seed production; Insect pests; Predators of insect pests; Conidia
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Abstract/Contents: | "Insects in Kentucky bluegrass seed production fields in Oregon, Iaho, and Washington were sampled just before harvest and their association with ergot conidia of Claviceps purpurea Fr. (Tul.) was evaluated during 1996-1998. A diversity of insects was observed at all three locations. The most abundant beneficial insects collected with sweep nets were Nysium spp., Nabis spp., ichneumonid wasps, and Hippodamia spp. The cranberry girdler, Chrysoteuchia topiaria (Zeller), was the only important pest on grass seed collected by sweep net. Numbers of aphids such as Sitobion avenae (F.) cicadellids and thrips such as Anaphothrips spp. and Aptinothrips spp. that were collected with an aphid sampler were below economic thresholds. Other insect groups occurred in low numbers. Noctuid moths collected in universal blacklight traps included nine species of cutworms and armyworms. Protagrotis obscura (B. & McD.) was the most common cutworm species and was present in all fields. The moth Chortodes rufostrigata (Pack.) previously reported only from wet meadows in northeast and south central Oregon was found in Kentucky bluegrass fields in central Oregon, suggesting that irrigated Kentucky bluegrass seed production fields may simulate a montane meadow habitat. Conidia of C. purpurea were found on a diversity of insects, including moths, flies, leafhoppers, and thrips. Up to 100% of moths and 75% of flies collected from some fields carried conidia of C. purpurea. No correlation between ergot honeydew present in a field and number of insects with conidia of C. purpurea was detected." |
Language: | English |
References: | 21 |
Note: | Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Butler, M. D., S. C. Alderman, P. C. Hammond, and R. E. Berry. 2001. Association of insects and ergot (Claviceps purpurea) in Kentucky bluegrass seed production fields. J. Econ. Entomol. 94(6):p. 1471-1476. |
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| Web URL(s): http://www.bioone.org/bioone/?request=get-document&issn=0022-0493&volume=094&issue=06&page=1471 Last checked: 03/29/2016 Access conditions: Item is within a limited access website |
| MSU catalog number: SB 931 .A1 J6 |
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