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Home → Publications → National Nursery Proceedings → 1973 → Transport and Control of Needlecast Diseases of Conifer Nursery Stock

Transport and Control of Needlecast Diseases of Conifer Nursery Stock

Several needlecast diseases have recently caused severe damage in some conifer nurseries and plantations in the northeastern States. Brown spot disease (Scirrhia acicola) and Lophodermium pinastri of red and Scotch pines, Rhizosphaera kalkhoffii of Colorado blue spruce, and Swiss needlecast (Phaeocryptopus gaumanni) of Douglas-fir are discussed. The movement of infected conifer nursery stock is documented to show how a disease can be transported from one State to another.


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Author(s): Thomas H. Nicholls, Allen J. Prey

Publication: National Nursery Proceedings - 1973

Event: Northeastern Area Nurserymen's Conference
1973 - Stevens Point, WI