New herbicides for control of linuron resistant pigweed species in carrots

Linuron-resistant pigweed species (Amaranthus retroflexus and Amaranthus powellii) have been identified on more than 8000 hectares in Ontario. The inability of linuron to control annual pigweed species is a serious threat to successful carrot production. The objective of this study is to further the development of an integrated weed management strategy for carrots with a special focus on management and control. Field trials were conducted at the Ontario Vegetable Crop Research Station located in Kettleby, Ontario. The identification and potential registration of new herbicides for the control of linuron-resistant pigweed species will provide new weed management options for growers in-regards to the best management practices for current and future herbicide-resistant populations.

已在安大略省境内超过8000公顷的农田中检出对利谷隆（linuron）具有抗性的苋属杂草（pigweed），涵盖反枝苋（Amaranthus retroflexus）与鲍威尔苋（Amaranthus powellii）两个物种。利谷隆无法有效防除一年生苋属杂草的问题，对胡萝卜的规模化生产构成了严峻威胁。本研究旨在进一步开发胡萝卜田杂草综合防控策略，并重点聚焦于杂草的治理与防除环节。本研究于位于安大略省凯特尔比（Kettleby）的安大略省蔬菜作物研究站开展田间试验。针对利谷隆抗性苋属杂草的新型除草剂开发及其潜在登记工作，将为种植者提供全新的杂草防控方案，助力其优化针对当前及未来除草剂抗性杂草种群的最佳管理实践。