A linuron-free weed management strategy for carrots

de Boer Tessa; Smith Peter; Chandler KevinNurse RobertObeid KristenSwanton Clarence

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A linuron-free weed management strategy for carrots

机译：A linuron-free weed management strategy for carrots

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The development of a linuron-free weed management strategy for carrot production is essential as a result of the herbicide reevaluation programs launched by the Pest Management Regulatory Agency in Canada for herbicides registered before 1995 and the discovery of linuron-resistant pigweed species in Ontario. Field trials were conducted in one of Ontario's main carrot-growing regions on high organic soils in 2016 and 2017. Pigweed species seedlings were effectively controlled with PRE treatments of prometryn, pendimethalin, S-metolachlor, or glufosinate. POST treatments of pyroxasulfone and metribuzin followed by predetermined biologically effective dose (>= 90% control of pigweed seedlings) of acifluorfen, oxyfluorfen, fluthiacet-methyl, and fomesafen achieved excellent crop selectivity and commercially acceptable pigweed species seedling control under field conditions. Carfentrazone-ethyl or fomesafen applied PRE severely reduced seedling emergence and yield in the wet growing season of 2017. This study demonstrated clearly that an alternative linuron-free strategy can be developed for carrots. The strategy of exploring the potential to use the biologically effective dose of selected herbicides to achieve crop selectivity and control of pigweed species seedlings was verified.

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《Weed Technology: A journal of the Weed Science Society of America》 |2019年第3期|464-474|共11页
作者
de Boer Tessa; Smith Peter; Chandler KevinNurse RobertObeid KristenSwanton Clarence;
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作者单位

Univ Guelph, Dept Plant Agr, Guelph, ON N1G 2W1, Canada;

Agr & Agri Food Canada, Harrow, ON, Canada;

Ontario Minister Food Agr & Rural Affairs, Hort, Harrow, ON, Canada;

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原文格式 PDF
正文语种英语
中图分类植物保护;
关键词
Biologically effective dose; carrot growth; critical weed-free period; seedling emergence;

A linuron-free weed management strategy for carrots

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