Open AccessDuration 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.