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Barnyard grass (Echinochloa colona L.) is one of the noxious weed in rice field which significantly affects the growth and development of rice from germination stage to harvest stage. Various concentrations (1, 2.5, 5, 10, 15 and 20g/l) of aqueous extracts prepared from shade dried leaves of (Excoecaria agallocha L.) a milky mangrove and determined their herbicidal efficacy against the germination, growth and biochemical changes of barnyard grass. The green house experimental results showed that the germination of weed seed was gradually delayed when concentration increased from lower to higher level and higher degree of inhibition was noticed when it exposed to 15 and 20g/l) extract concentration. Generally, the radical length was more suppressed than plumule length against the extract treatments.
[Suraj Maharaj and Prabhakaran.J (2014); Herbicidal efficacy of Excoecaria agallocha L., a mangrove plant on growth and development of barnyard grass (Echinochloa colona L.) Int. J. of Adv. Res. 2 (4). 0] (ISSN 2320-5407). www.journalijar.com
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