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Home → Publications → National Nursery Proceedings → 1970 → Control Of Lophopdermium Pinastri On Red And Scotch Pines In Lake States Forest Nurseries

Control Of Lophopdermium Pinastri On Red And Scotch Pines In Lake States Forest Nurseries

An outbreak of the needlecast fungus, Lophodermium pinastrl, killed or caused severe damage to several million red pine (Pinus resinosa Ait.) and Scotch pine (P. sylvestris L.) seedlings in 14 nurseries in Michigan, Minnesota, and Wisconsin from 1966 to 1969. The outbreak was brought under control with the use of the fungicide maneb. Lophodermium pinastri is a serious pest in European Scotch pine nurseries and plantations. In 1935 Spaulding (2) reported a destructive needlecast of red pine seedlings in a Massachusetts nursery that was authoritatively identified as Lophodermium pinastri. However, this fungus was not considered an important primary pathogen of red and Scotch pines in this country until recently.


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Author(s): Dr. Tom Nicholls

Event: Northeastern Area Nurserymen's Conference
1970 - Orono, Maine