Also found in: Medical, Encyclopedia, Wikipedia.


 (ə-lē-lŏp′ə-thē, ăl′ə-)
A usually negative effect on the growth or development of an organism of one species, caused by a chemical released by an organism of another species. Usually used of plants.

[Greek allēlōn, reciprocally (from allos, another; see al- in Indo-European roots) + -pathy.]

al·le′lo·path′ic (ə-lē′lə-păth′ĭk, ə-lĕl′ə-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


relating to or characterized by allelopathy
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Barley straw is a biological agent which on decomposition produces allelopathic compounds that act as algaecides in reservoirs.
Oats, wheat and other cover crop plants also produce allelopathic substances that can temporarily hinder the germination and growth of other plants, too, but not in quantities sufficient to cause serious disturbances in the garden.
Walnut and butternut trees get part of their scientific name, Juglans, from a chemical they produce called "juglone." Juglone is an allelopathic chemical, meaning it inhibits the growth of other plants in the vicinity of the tree, reducing competition for water and nutrients.
The goal of agroforestry is to maintain sustainable land use by incorporating woody species with agriculturally important crops that can help to decrease soil erosion while providing unique allelopathic benefits to the system.
In addition, cover crops can suppress weed density by competing for light (Teasdale 1993), water and nutrients (Mayer & Hartwig 1986) and through the production of allelopathic compounds (White et al.
No plant is yet marketed for its allelopathic potential, notes Francisco A.
The objectives of this research were (i) to assess the allelopathic potential of three rye populations, six triticale cultivars, and two barley cultivars and (ii) to determine, under field conditions in northern Greece, the cover crop effect on corn development and on emergence and biomass of two annual grass weeds, barnyardgrass and bristly foxtail.
The data was inconclusive regarding B augmentation overcoming allelopathic effects of pHBA.
ashei litter and vermiculite suggest that there is no allelopathic component in the J.
Extensive research indicated that the Callistemon citrinus plant was in fact exuding a natural herbicide identified as leptospermone, an allelopathic substance.
Casual observation of ponds containing the aquatic plant, Chara vulgaris, led us to think that Chara might produce chemicals that inhibit the growth of other plants, i.e., that it might be allelopathic. To test this hypothesis, we germinated lettuce and radish seeds with and without aqueous extracts of Chara vulgaris and C.
It was hypothesized that the tomato, marigold, and pecan leaf extracts would have an allelopathic effect on the growth of the broccoli and lettuce.