Stimulation action of mefenpyr-diethyl on soybean, wheat, and signal grass plants

Abstract

Mefenpyr-diethyl is a safener used for protection of cereal plants under applications of ACCase and ALS inhibitor herbicides. Current studies are describing safeners using a new approach, relating these products to stimulation action on plants. The objective of this work was to evaluate the stimulation action of mefenpyr-diethyl on soybean, wheat, and signal grass plants. The experiment was conducted in a greenhouse, under a completely randomized design, with four replications, in two seasons. Mefenpyr-diethyl (50 g a.i. ha⁻¹) was applied on soybean plants (at V4 stage), and wheat and signal grass plants (both with 15 cm height). The variables evaluated were plant height, dry matter, and lipid content of the three species, and number of tillers of wheat and signal grass plants. The application of mefenpyr-diethyl in the first season increased the number of tillers of wheat and height of soybean plants. The soybean presented 24 and 14% more dry matter than the control in the first and second season, respectively, and 0.5% more lipid content in plants treated with mefenpyr-diethyl. These results show the stimulation action of mefenpyr-diethyl on wheat and soybean plants, denoting its potential for growth promotion and indicating the need for studies with this approach. No effect was found for the signal grass plants.

Keywords:

• Safener
• stimulus
• lipid content
• growth

Acknowledgements

The authors thank all the staff and students of the Center for Advanced Research in Weed Sciences (NUPAM) of the Faculty of Agronomic Sciences and the Laboratory of Bromatology of the Faculty of Veterinary Medicine and Zootechnics of the São Paulo State University (FCA/UNESP, Botucatu, SP, Brazil).

Disclosure statement

The authors declare that there is no conflict of interests regarding the publication of this paper.

Additional information

Funding

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (BR). This work was suppoted by the [Brazilian Coordination for the Improvement of Higher Education Personnel (CAPES)]; under Grat [Project number 88882.180605/2018-01].