PT  - JOURNAL ARTICLE
AU  - T.E. Kolb
TI  - Allelopathic Effects of Kentucky Bluegrass on Northern Red Oak and Yellow-Poplar
AID  - 10.48044/jauf.1988.067
DP  - 1988 Nov 01
TA  - Arboriculture & Urban Forestry (AUF)
PG  - 281--283
VI  - 14
IP  - 11
4099  - http://auf.isa-arbor.com/content/14/11/281.short
4100  - http://auf.isa-arbor.com/content/14/11/281.full
SO  - JOA1988 Nov 01; 14
AB  - Allelopathic effects of Kentucky bluegrass (Poa pratensis) on seedling growth of northern red oak (Quercus rubra) and yellow-poplar (Liriodendron tulipifera) were investigated. Foliage extracts and leachates from potted Kentucky bluegrass did not reduce the growth of either species in a Hagerstown top soil over a 139-day period from seed germination. Removal of northern red oak cotyledons at the one-flush stage reduced growth of the stem and root, but did not affect susceptibility to bluegrass foliage extractives and pot leachates. The results suggest that previously reported detrimental interference between Kentucky bluegrass and seedlings of northern red oak or yellow-poplar can be attributed to competition rather than allelopathy.