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Sulfonylurea resistance in Lindernia micrantha , an annual paddy weed in Japan
Author(s) -
Itoh,
Hong Wang,
Ohba
Publication year - 1999
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1046/j.1365-3180.1999.00155.x
Subject(s) - sulfonylurea , herbicide resistance , mcpa , weed , acetolactate synthase , agronomy , biology , weed control , chemistry , microbiology and biotechnology , biochemistry , enzyme , insulin
Resistance to sulfonylurea herbicides, including bensulfuron‐methyl, pyrazosulfuron‐ethyl, imazosulfuron and ethoxysulfuron, was discovered in naturally occurring populations of Lindernia micrantha D. Don in rice fields that had been treated with sulfonylurea‐based herbicides for 3–7 consecutive years. The resistant biotype was approximately 80≈300 times more resistant than the susceptible one to the above four sulfonylurea herbicides. This is the second confirmed occurrence of herbicide resistance resulting from the use of sulfonylurea herbicides in Japan. Several herbicides with different modes of action, including pretilachlor, cafenstrole, bifenox, naproanilide, thiobencarb + simetryn + MCPB, MCPA‐thioethyl + simetryn and cyhalofop‐butyl + bentazone, effectively controlled the resistant biotype in pot trials.