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Dose–response effects of clove oil from Syzygium aromaticum on the root-knot nematode Meloidogyne incognita by Susan LF Meyer; Dilip K Lakshman; Inga A Zasada; Bryan T Vinyard; David J Chitwood is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract **BACKGROUND:** Clove oil, derived from the plant __Syzygium aromaticum__ **(L.) Merr. & Perry**, is active against various organisms, and was prepared in a soy lecithin/detergent formulation to determine concentrations active against the root‐knot nematode __Meloidogyne incognita__ (Kofoid and White) Chitwood. **RESULTS:** In microwell assays, the mean effective clove oil concentration that reduced egg hatch by 50% (EC~50~) was 0.097% (v/v) clove oil; the EC~50~ for second‐stage juvenile (J2) viability was 0.145% clove oil (compared with carrier control treatments). Volatiles from 5.0% clove oil reduced nematode egg hatch in water by 30%, and decreased viability of hatched J2 by as much as 100%. Reductions were not as large with nematodes in carrier. In soil trials with J2 recovered from Baermann funnels, the EC~50~ = 0.192% clove oil (compared with water controls). **CONCLUSION:** The results demonstrated that the tested formulation is active against __M. incognita__ eggs and J2, that the EC~50~ values for J2 in the microwell studies and the soil recovery tests were similar to each other and that direct contact with the clove oil is needed for optimal management resul

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Author

Susan LF Meyer; Dilip K Lakshman; Inga A Zasada; Bryan T Vinyard; David J Chitwood

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1526-498X)

Published

2007

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)