RT Journal Article
SR Electronic
T1 Duration of Water Stress Affects Development of Sphaeropsis Canker on Scots Pine
JF Arboriculture & Urban Forestry (AUF)
JO JOA
FD International Society of Arboriculture
SP 73
OP 76
DO 10.48044/jauf.1997.009
VO 23
IS 2
A1 Janelle W. Johnson
A1 Mark L. Gleason
A1 Sharon K. Parker
A1 Ellen B. Provin
A1 Jeffery K. Iles
A1 Paula H. Flynn
YR 1997
UL http://auf.isa-arbor.com/content/23/2/73.abstract
AB Saplings of Pinus sylvestris were subjected to drought stress periods and inoculated with Sphaeropsis 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.