The application of 1.8-naphthalic anhydride to control ALS-herbicide resistant barnyardgrass with graminicides

  • V. Schwartau Institute of Plant Physiology and Genetic of NAS of Ukraine, 31/17, Vasilkivska str., Kiev, Ukraine, 03022
  • L. Mykhalska Institute of Plant Physiology and Genetic of NAS of Ukraine, 31/17, Vasilkivska str., Kiev, Ukraine, 03022
Keywords: weeds, herbicides, acetolactate synthase inhibitors, resistance, 1.8-naphthalic anhydride


Goal. Investigate the possibility to use 1,8-naphthalic anhydride metabolism inductor to control acetolactate synthase (ALS) inhibitor-resistant biotype of common graminicides of aryloxyphenoxypropionic acid class in rice.

Methodology. The interaction of 1,8-naphthalic anhydride and fenoxaprop-p-ethyl on variety Vikont rice plants was studied under laboratory aseptic conditions. The data were statistically processed.

Results. In Ukraine we have identified the biotype of resistant to herbicide ALS inhibitors Echinochloa crus-galli, which is cross-resistant to widely used herbicides — ALS inhibitors of the following chemical classes: imidazolinones (imazamox, imazapyr), sulfonylurea (nicosulfuron), triazolopyrimidines (penoxsulam). The possibilities of chemical control of weeds in rice, corn, sunflower, etc. crops are significantly limited. Multi-resistance of this weed biotype to herbicides — inhibitors of photosynthesis, mitotic cycle, 5-enolpyruvylshikimate-3-phosphate synthase, acetyl-CoA-carboxylase, protein synthesis — has not been detected. Therefore, the use of graminicides of aryloxyphenoxypropionate class is promising for the control of this ALS-resistant biotype of Echinochloa crus-galli. To increase the selectivity of fenoxaprop-P-ethyl application to rice plants, we propose to treat the seeds of the crop with the inductor of xenobiotics metabolism in plants — 1.8-naphthalic anhydride before sowing. When using 1.8-naphthalic anhydride in concentrations of 10-5 M, phytotoxicity of fenoxaprop-P-ethyl in concentrations of 10-6 and 10-5 M to rice plants is effectively reduced.

Conclusions. The use of 1.8-naphthalic anhydride is promising for increasing the selectivity of fenoxaprop-P-ethyl for rice plants and allows the development of technologies using graminicides of aryloxyphenoxypropionate class to control ALS-resistant biotype of Echinochloa crus-galli in crops. Also, it is necessary to pay attention to the problem of ALS-resistant weed biotype proliferation control in agrophytocenoses in regions of Ukraine.


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How to Cite
Schwartau , V., & Mykhalska , L. (2020). The application of 1.8-naphthalic anhydride to control ALS-herbicide resistant barnyardgrass with graminicides. Quarantine and Plant Protection, (2-3), 4-9.