Evaluation of broadcast and spot herbicide applications for spreading dogbane (Apocynum androsaemifolium L.) management in lowbush blueberry fields

IF 1 4区农林科学 Q3 AGRONOMY

Canadian Journal of Plant Science Pub Date : 2022-09-02 DOI:10.1139/cjps-2022-0087

H. Lyu, A. McKenzie‐Gopsill, S. White

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引用次数: 0

Abstract

Abstract Spreading dogbane is a creeping herbaceous perennial weed in lowbush blueberry. Management is limited primarily to spot applications of dicamba, though recent herbicide registrations facilitate the evaluation of new broadcast and spot herbicide applications. The objectives of this research were to determine (1) the effect of sequential postemergence (POST) mesotrione application interval on spreading dogbane, (2) the effect of sequential POST mesotrione and foramsulfuron applications on spreading dogbane, (3) the effect of POST herbicide tank mixtures on spreading dogbane, (4) the effect of summer and fall spot herbicide applications on spreading dogbane, and (5) the effect of spot applications of dicamba tank mixtures with sulfonylurea herbicides on spreading dogbane. Broadcast mesotrione (144 g a.i. ha−1) and foramsulfuron (35 g a.i. ha−1) applications did not control spreading dogbane. Control was not improved by sequential applications of either herbicide. Broadcast mesotrione + foramsulfuron applications reduced non-bearing-year density and may be more effective than either herbicide applied alone. Broadcast flazasulfuron applications reduced non-bearing-year shoot density and flazasulfuron + foramsulfuron applications reduced non-bearing-year and bearing-year shoot densities. Summer spot applications of foramsulfuron and flazasulfuron caused 70% injury to spreading dogbane but did not reduce shoot density, and dicamba continues to be the most effective spot herbicide treatment. Fall spot applications did not control spreading dogbane due to early senescence of spreading dogbane shoots. Spot applications of dicamba at 0.96 or 1.92 g a.e. L water−1 provided equivalent spreading dogbane control and efficacy was not improved by tank mixture with foramsulfuron, flazasulfuron, or nicosulfuron + rimsulfuron.

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低灌丛蓝莓田撒播麻草(Apocynum androsaemifolium L.)的施用评价

摘要山茱萸是低灌木蓝莓中的一种多年生匍匐草本杂草。管理主要限于麦草畏的现场应用，尽管最近的除草剂注册有助于评估新的广播和现场除草剂应用。本研究的目的是确定（1）顺序羽化后（POST）中三酮施用间隔对施用毒麻的影响，（2）顺序施用POST中三酮和氟虫灵对施用毒草的影响，（4）夏秋两季点用除草剂对布麻的影响，以及（5）麦草畏与磺酰脲类除草剂混合罐的点用对布麻影响。施用广播中三酮（144 g a.i.ha−1）和氟虫磺隆（35 g a.i.ha−1）并不能控制其传播。连续施用两种除草剂都没有改善控制。广播中三酮+杀草灵降低了非生育年密度，可能比单独使用任何一种除草剂都更有效。广播使用flazasulfuron降低了非承载年的枝条密度，flazasul磺ron+foramsulfuron应用降低了非承重年和承载年的树干密度。在夏季现场施用福莫磺隆和flazasulfuron对传播的毒麻造成70%的伤害，但并没有降低芽密度，麦草畏仍然是最有效的现场除草剂处理方法。秋斑施用并不能控制施用罗布麻，因为施用罗布草的枝条衰老较早。在0.96或1.92 g a.e.L水−1的条件下，现场施用麦草畏可提供同等的布麻控制效果，且与福莫磺隆、阿磺隆或烟嘧磺隆+林磺隆的罐式混合物并未提高药效。

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来源期刊

Canadian Journal of Plant Science 生物-农艺学

CiteScore

1.90

自引率

8.30%

发文量

审稿时长

1 months

期刊介绍： Published since 1957, the Canadian Journal of Plant Science is a bimonthly journal that contains new research on all aspects of plant science relevant to continental climate agriculture, including plant production and management (grain, forage, industrial, and alternative crops), horticulture (fruit, vegetable, ornamental, greenhouse, and alternative crops), and pest management (entomology, plant pathology, and weed science). Cross-disciplinary research in the application of technology, plant breeding, genetics, physiology, biotechnology, microbiology, soil management, economics, meteorology, post-harvest biology, and plant production systems is also published. Research that makes a significant contribution to the advancement of knowledge of crop, horticulture, and weed sciences (e.g., drought or stress resistance), but not directly applicable to the environmental regions of Canadian agriculture, may also be considered. The Journal also publishes reviews, letters to the editor, the abstracts of technical papers presented at the meetings of the sponsoring societies, and occasionally conference proceedings.