Progress with direct bark inoculation for White Pine blister rust.

Clifford E. Ahlgren

Research output: Contribution to journalArticle

Abstract

Describes tests in which entire rings of bark containing active Cronartium ribicola mycelium were transferred from cankered to healthy 6- to 9-year Pinus strobus stems. Out of 25 such inoculations, 14 transmitted the disease; 7 trees died through graft failure where bands were taken from the oldest portion of a canker; and in 4 cases the disease did not spread and symptoms disappeared from the grafted band. As infection was evident on all successful inoculations within a year after grafting, the method shows considerable superiority over other methods in time required to determine resistance. KEYWORDS: Blister rust inoculations \ plant diseases \ trees \ Fungi artificial inoculation \ fungal diseases \ Pinus strobus \ diseases \ blister rust \ protection \ forests \ plant diseases \ fungal diseases \ rust diseases \ stem
Original languageEnglish (US)
Pages (from-to)208-209
Number of pages2
JournalJournal of Forestry
Volume59
Issue number3
Publication statusPublished - 1961

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