Duration of Water Stress Affects Development of Sphaeropsis Canker on Scots Pine | Zendy

Janelle Johnson | Zendy; Mark L. Gleason | Zendy; Sharon K. Parker | Zendy; Ellen Provin | Zendy; Jeffery Lies | Zendy; Paula Flynn | Zendy

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Duration of Water Stress Affects Development of Sphaeropsis Canker on Scots Pine

Author(s) -

Janelle Johnson,

Mark L. Gleason,

Sharon K. Parker,

Ellen Provin,

Jeffery Lies,

Paula Flynn

Publication year - 1997

Publication title -

arboriculture and urban forestry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.222

H-Index - 47

eISSN - 2155-0778

pISSN - 1935-5297

DOI - 10.48044/jauf.1997.009

Subject(s) - scots pine , canker , inoculation , biology , water stress , horticulture , pinus <genus> , botany

Saplings of Pinus sylvestris were subjected to drought stress periods and inoculated with Sphaempsis sapinea in a greenhouse experiment. Six wk after inoculation, saplings that had low needle water potentials for 14 to 21 days after inoculation exhibited more dieback and developed significantly (P < 0.05) longer cankers than saplings that had equivalent water stress for 3 to 4 days after inoculation or unstressed saplings. The results indicate that drought stress increases susceptibility of Scots pine to Sphaeropsis canker and that canker growth can be suppressed by watering drought-stressed trees.

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