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- W2354262127 abstract "To found out the value of Helianthemum ordosicum,the biological activities of six kinds of extract on different concentrations were determined and compared. And the carbinol,ethanol and water extracts which have strong nematicidal activity were selected from those extracts. The influences of extract types,treatment concentrations and treatment time on Bursaphelenchus xylophilus were investigated. Variance analysis of three factors showed Helianthemum ordosicum’s corrected mortality was extremely influenced by type (A),treatment concentration (B) and treatment time (C),interaction effect of three factors (A×B×C) and interaction effects between factors (A×B,A×C,B×C)had the same effect. The optimal treatment combinations were solved : one was the water extract 6 mg·L-1 on the 1st day; the other was ethanol extract 3 mg·L-1 on the 5th day ,the Helianthemum ordosicum’s corrected mortalities of the above two combinations were all 100%. The water and carbinol extract’s LC50 in 5 days were compared,and the nematocidal activity of water extract were significantly stronger than others." @default.
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- W2354262127 date "2008-01-01" @default.
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- W2354262127 title "Nematicidal activity of extracts of Helianthemum ordosicum against Bursaphelenchus xylophilus" @default.
- W2354262127 hasPublicationYear "2008" @default.
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