Insect Infestations, Incidence of Viral Plant Diseases, and Yield of Winter Wheat in Relation to Planting Date in the Northern Great Plains

Planting date effects on arthropod infestation and viral plant disease are undocumented for winter wheat, Triticum aestivum L., in South Dakota and the northern Great Plains. Winter wheat was planted over three dates (early, middle, and late; generally from late August to late September) to determin...

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Bibliographic Details
Published in:Journal of economic entomology 2005-12, Vol.98 (6), p.2020-2027
Main Authors: Hesler, Louis S., Riedell, Walter E., Langham, Marie A. C., Osborne, Shannon L.
Format: Article
Language:English
Subjects:
Animals
Aphididae
Barley yellow dwarf virus
Biological and medical sciences
cereal aphids
Control
crop damage
disease incidence
FIELD AND FORAGE CROPS
Fundamental and applied biological sciences. Psychology
Generalities
grain yield
insect pests
Insecta
Insecta - physiology
Invertebrates
Phytopathology. Animal pests. Plant and forest protection
Plant Diseases - parasitology
Plant Diseases - virology
Plant Shoots
plant viruses
planting date
population density
Protozoa. Invertebrates
Rhopalosiphum padi
Schizaphis graminum
Seasons
Seedlings
South Dakota
Time Factors
Triticum - parasitology
Triticum - virology
Triticum aestivum
winter wheat
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Summary:Planting date effects on arthropod infestation and viral plant disease are undocumented for winter wheat, Triticum aestivum L., in South Dakota and the northern Great Plains. Winter wheat was planted over three dates (early, middle, and late; generally from late August to late September) to determine the effect on abundance of insect pests, incidence of plant damage, incidence of viral plant disease, and grain yield. The study was conducted simultaneously at two sites in South Dakota over three consecutive cropping seasons for a total of six site yr. Cereal aphids (Homoptera: Aphididae) were abundant in three site yr. Rhopalosiphum padi (L.), bird cherry-oat aphid, was the most abundant cereal aphid at the Brookings site, whereas Schizaphis graminum (Rondani), greenbug, predominated at Highmore. Aphid-days were greater in early versus late plantings. Aphid abundance in middle plantings depended on aphid species and site, but it usually did not differ from that in early plantings. Incidence of Barley yellow dwarf virus (family Luteoviridae, genus Luteovirus, BYDV) declined with later planting and was correlated with autumnal abundance of cereal aphids. Incidence of BYDV ranged from 24 to 81% among 1999 plantings and was
ISSN:0022-0493
1938-291X
DOI:10.1603/0022-0493-98.6.2020