Nirmala Panda and Anup Kumar Paul
Indira Gandhi Krishi Vishwavidalaya Raipur (C.G)
Email: anupfmkvk@redifmail.com, anup_niru@redifmail.com
Abstract: The present investigation was carried out during kharif 2006-07 at instructional farm of indira Gandhi krishi vishwavidalaya,Raipur .The experiment was conducted in split plot design in field and CRD in laboratory condition replication in twice. The stem extract was of Echinochloa colona was most effective and root extract in least effective on germination and seedling growth of rice genotype. Maximum reduction in seedlings growth was observed in R-1060-1674-1-1 ,Danteshwari and R-1037-649-1-1.While minimum impact was observed on R-548-89-6,Safri-17 and Dubraj.The minimum chlorophyll content in Echinochloa colona was observed in Dubraj.In Ischaemum rugosum maximum chlorophyll was observed in Danteshwari. Overall more phenol content was estimated in vasumati ,dubraj and Safri 17 .Minimum phenol content was observed in R-1182-167-2-157-1 and danteshwari.Minimum adverse effect on amylase activity was observed in Echinochloa colona was due to shoot extract of rice genotypes Vasumati followed by R-548-89-6 and Safri-17 and maximum adverse effect was due to indira sugandhit dhan .
Keywords: Allelopathy, amylase,Phenol content, Rice extract, Weed extract
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