Allelopathy is probably involved in all aspects of natural ecosystems such as competition and succession of plant communities. Much of research in allelopathy mentioned that allelopathy can be used to control weeds and to reduce synthetic chemical input into agriculture practices. Several important papers describing allelopathy and allelopathic active substances in plants in Bangladesh have published in the last decay. Hundreds of plant species including about 150 rice cultivars in Bangladesh were evaluated their allelopathic potential. Dozens of allelopathic active substances including novel compounds were also isolated from those plant species. Concept of allelopathy is very important to developed sustainable agriculture setting in organic farming. Some of the information in allelopathy have the potential for use in understanding and controlling weeds in agriculture.
Key words: Allelopathy, Bangladesh, Phytotoxicity, Weed management
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