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Light Requirement in Rapid Diagnosis of Sulfonylurea-Resistant Weeds of Lindernia spp. (Scrophulariaceae)

Published online by Cambridge University Press:  12 June 2017

Akira Uchino*
Affiliation:
Department of Lowland Farming, Tohoku National Agricultural Experiment Station, Omagari, Akita 014-0102, Japan
Hiroaki Watanabe
Affiliation:
Department of Lowland Farming, Tohoku National Agricultural Experiment Station, Omagari, Akita 014-0102, Japan
Guang-Xi Wang
Affiliation:
Department of Lowland Farming, Tohoku National Agricultural Experiment Station, Omagari, Akita 014-0102, Japan
Kazuyuki Itoh
Affiliation:
Department of Lowland Farming, Tohoku National Agricultural Experiment Station, Omagari, Akita 014-0102, Japan
*
Corresponding author's E-mail: [email protected].

Abstract

Sulfonylurea resistance has been found in Japan, and four of the nine resistant weeds are in the genus Lindernia (Scrophulariaceae). To develop appropriate control methods for these resistant weeds, a rapid method to diagnose sulfonylurea-resistant weeds was improved and applied to common falsepimpernel (L. procumbens), two varieties of low falsepimpernel (L. dubia var. dubia and var. major), and azetogarashi (L. micrantha). Illumination is crucial for diagnosis in Lindernia spp., and treatment with 7.5 or 75 ng ai/ml thifensulfuron-methyl produced clear results.

Type
Research
Copyright
Copyright © 1999 by the Weed Science Society of America 

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Footnotes

Present address of the third and fourth authors: National Institute of Agro-Environmental Sciences, Tsukuba, Ibaraki 305-8604, Japan.

References

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