RHS Level 2 - Principles of Horticulture
RHS Level 3 - Certificate in Practical Horticulture
Monday, 15 October 2012
Horticultural Dictionary - Allelopathy
Suppression
of
growth
of
a
plant
by
a
toxin
released
from
a
nearby
plant
of
the
same
or
another
species.
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