Plant Soil Environ., 2023, 69(11):522-531 | DOI: 10.17221/386/2023-PSE

The potential of glyphosate-alternatives like electrophysical weeding in the stale seedbed method for Alopecurus myosuroides (Huds.) controlOriginal Paper

Benjamin Klauk ORCID...1, Jan Petersen1
1 Department Life Science and Engineering, Bingen Technical University of Applied Sciences, Bingen am Rhein, Germany

Changing political demands requires the search for alternatives to glyphosate, which has often been used in the stale seedbed method. In three field trials between 2020 and 2023, three electrophysical treatments (XPower System, Zasso®) differing in speed, three mechanical treatments (disc harrow, rotary harrow, cultivator) and three chemical treatments (glyphosate, maleic hydrazide, pelargonic acid + maleic hydrazide) were evaluated concerning the efficacy and economic performance in stale seedbed method in Alopecurus myosuroides control. Process costs for each treatment were calculated. Furthermore, the maximum investment costs for the XPower system were calculated to be on the same level as the other treatments. In all treatments, the density of A. myosuroides in autumn was significantly lower than in the control. In general, the fewest plants and heads were found in the chemical treatments. Despite the lower plant density, the electrophysical method did not show a significant difference in the number of heads compared to the untreated control, especially at higher speeds. Calculated process costs ranged between
40 €/ha (glyphosate) and 430 €/ha (pelargonic acid + maleic hydrazide). To be economically comparable with the other treatments, the investment of the XPower should be at maximum between – 219 000 € (glyphosate) and 300 000 € (pelargonic acid + maleic acid), depending on the driving speed. In a holistic view, electrophysical control, as well as pelargonic acid and maleic hydrazide as glyphosate alternatives in the stale seedbed method, are not suitable. A stale seedbed with mechanical control of A. myosuroides is recommended.

Keywords: blackgrass; integrated weed management; non-chemical weed control; pelargonic acid; maleic hydrazide

Received: September 21, 2023; Revised: October 14, 2023; Accepted: October 16, 2023; Prepublished online: November 6, 2023; Published: November 30, 2023  Show citation

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Klauk B, Petersen J. The potential of glyphosate-alternatives like electrophysical weeding in the stale seedbed method for Alopecurus myosuroides (Huds.) control. Plant Soil Environ. 2023;69(11):522-531. doi: 10.17221/386/2023-PSE.
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