Articles
MANAGEMENT OF APHID TRANSMITTED VIRUS DISEASES OF ORNAMENTAL BULB CROPS IN THE PACIFIC NORTHWEST
Article number
570_39
Pages
297 – 300
Language
English
Abstract
Color-breaking of tulip flowers was one of the first clearly documented examples of a plant virus disease.
Since its description in 1576, a number of other important virus diseases of various ornamental bulb crops have been described.
Almost all of these viruses are transmitted in a non-persistent manner by one or more species of aphids.
During 1998, a survey of all commercial bulb growers in the Pacific Northwest was conducted to determine the practices they use to manage a variety of disease and pest problems.
In the case of viruses, growers use hand and/or herbicide roguing of symptomatic plants on about 80% of the lily acreage, 69% of the tulip acreage and less than 1% of the daffodil acreage to reduce the incidence of virus-infected plants in their fields.
Although applications of insecticides are applied to 70 to 100% of the tulip, daffodil, iris and lily acreage to control aphids, relatively few growers use pyrethroid types of insecticides or mineral spray oils.
It is likely that growers could improve the effectiveness of their virus disease management program by modifying their current spray programs to include these more effective materials to control non-persistent aphid-borne viruses.
Since its description in 1576, a number of other important virus diseases of various ornamental bulb crops have been described.
Almost all of these viruses are transmitted in a non-persistent manner by one or more species of aphids.
During 1998, a survey of all commercial bulb growers in the Pacific Northwest was conducted to determine the practices they use to manage a variety of disease and pest problems.
In the case of viruses, growers use hand and/or herbicide roguing of symptomatic plants on about 80% of the lily acreage, 69% of the tulip acreage and less than 1% of the daffodil acreage to reduce the incidence of virus-infected plants in their fields.
Although applications of insecticides are applied to 70 to 100% of the tulip, daffodil, iris and lily acreage to control aphids, relatively few growers use pyrethroid types of insecticides or mineral spray oils.
It is likely that growers could improve the effectiveness of their virus disease management program by modifying their current spray programs to include these more effective materials to control non-persistent aphid-borne viruses.
Publication
Authors
G.A. Chastagner, A. Antonelli, K.L. Riley
Keywords
Virus disease management, aphid control
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