Allelopathy is a biological phenomenon by which an organism produces one or more biochemicals that influence the growth, survival, and reproduction of other organisms. These biochemicals are known as allelochemicals and can have beneficial (positive allelopathy) or detrimental (negative allelopathy) effects on the target organisms.
Kindly see https://en.wikipedia.org/wiki/Allelopathy
Allelopathy refers to the beneficial or harmful effects of one plant on another plant, both crop and weed species by the release of chemicals from plant parts by leaching, root exudation, volatilization, residue decomposition and other processes in both natural and agricultural systems.
Allelopathy is a process in which a plant produces certain chemicals that can inhibit the growth of other plants in vicinity..
it can be regarded as a weapon used by plant to compete out other plants growing in vicinity.
in this way the plant producing allelochemicals can spread and propagate themselves easily
Regards
Danish husain
Dear Danish husain, Arvind Singh, Subir Bandyopadhyay I very thank to answer, i am love to know when used plant Extract spry on plant, mean Allelopathic??
Allelopathy is a natural phenomenon. I don't think that plant extracts from one plant sprayed on another plant to control or suppress its growth will be allelopathy.
Dear Ghalib
There is plenty of literature available where plant extract is used to alter the growth, or as inhibitors of certain microbes or as insecticide or pesticide... but have never encountered use of term allelopathy in such cases...
in my opinion, the query you raised has nothing to do with allelopathy
Dear , Arvind Singh and Subir Bandyopadhyay, I am Very thanks to answer With continued cooperation.
Allelopathy is a mechanism in which chemicals produced by weed plants may increase or decrease the associated plant growth. The term of allelopathy is defined as an interaction among the plants and the microorganisms (Molish, 1937), or as the effects of one plant (including microorganisms) on another plant via the release of chemicals into the environments (Rice, 1984). Allelopathy, also could be coined as an interference mechanism, in which live or dead plant materials release chemical substances, which inhibit or stimulate the associated plant growth. ( Harper, 1977 and May and Ash, 1990). Allelopathy, may also play an eminent role in the intra-specific and inter-specific competition and may determine the type of inter-specific association. The plant may exhibit inhibitory or rarely stimulatory effects on germination and growth of other plants in the immediate vicinity.
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