suppression of growth of a plant by a toxin released from a nearby plant of the same or another species.
the inhibitory effect of one living plant upon another by the release of toxic substances
(ə-lē-lŏp’ə-thē, āl’ə-)
The inhibition of growth in one plant species by chemicals produced by another. For example, other plants will often not grow underneath black walnut trees, since these trees produce juglone, a chemical inhibiting plant respiration.

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