Effects of selective herbicide treatment on weed community in cereal crop rotation

Markéta Mayerová, Jan Mikulka and Josef Soukup
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Markéta Mayerová: CropResearch Institute, Division of Crop Management Systems, Prague, Czech Republic
Jan Mikulka: CropResearch Institute, Division of Crop Management Systems, Prague, Czech Republic
Josef Soukup: Facultyof Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic

Plant, Soil and Environment, 2018, vol. 64, issue 9, 413-420

Abstract: The efficacy of different frequently used selective herbicides and their impact on weed community were assessed in the field experiment with cereal crop rotation in 2013-2016. All herbicide treatments provided effective weed control, but community composition changed after 4 years. The density of many weed species increased on the untreated plots. Annual grasses Apera spica-venti and Alopecurus myosuroides had temporal increase at plots treated with 2,4-d, florasulam and aminopyralid, but decline at plots treated with pyroxsulam and/or chlorsulfuron. Significant treatment effect was confirmed only for Shannon's index (H'), where the highest H' was found in untreated controls (1.83) and the smallest in plots treated with 2,4-d + florasulam + aminopyralid (1.61). The pyroxsulam + florasulam + aminopyralid showed the greatest efficacy on a broad spectrum of weeds while maintaining reasonable species diversity.

Keywords: chemical weed management; herbicide efficacy; field trial; weed diversity (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:64:y:2018:i:9:id:289-2018-pse

DOI: 10.17221/289/2018-PSE

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