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Effects of fall bearing-year glufosinate applications, spring nonbearing-year glufosinate applications, and spring nonbearing-year foramsulfuron applications on hair fescue (Festuca filiformis) in lowbush blueberry
Weed Technology ( IF 1.4 ) Pub Date : 2020-11-04 , DOI: 10.1017/wet.2020.120 Scott N. White , Linshan Zhang
Weed Technology ( IF 1.4 ) Pub Date : 2020-11-04 , DOI: 10.1017/wet.2020.120 Scott N. White , Linshan Zhang
Hair fescue is a common perennial grass that reduces yields in lowbush blueberry fields. This grass is suppressed with nonbearing-year foramsulfuron applications, though suppression may be improved through use of sequential glufosinate and foramsulfuron applications. The objective of this research was to determine the main and interactive effects of fall bearing-year glufosinate applications, spring nonbearing-year glufosinate applications, and spring nonbearing-year foramsulfuron applications on hair fescue. The experiment was a 2 by 2 by 2 factorial arrangement of fall bearing-year glufosinate application (0, 750 g ai ha–1 ), spring nonbearing-year glufosinate application (0, 750 g ai ha–1 ), and spring nonbearing-year foramsulfuron application (0, 35 g ai ha–1 ) arranged in a randomized complete block design at lowbush blueberry fields located in Parrsboro and Portapique, NS, Canada. Fall bearing-year glufosinate applications, spring nonbearing-year glufosinate applications, and spring nonbearing-year foramsulfuron applications alone provided inconsistent hair fescue suppression. Fall bearing-year glufosinate applications followed by spring nonbearing-year foramsulfuron applications, however, reduced nonbearing-year total tuft density, flowering-tuft density, and flowering-tuft inflorescence number at each site and reduced seed production at Portapique. Sequential fall bearing-year and spring nonbearing-year glufosinate applications or sequential spring nonbearing-year glufosinate and foramsulfuron applications reduced flowering-tuft density and flowering-tuft inflorescence number at each site but did not consistently reduce total tuft density. Sequential herbicide treatments reduced bearing-year seedling density and may therefore contribute to hair fescue seed bank management in lowbush blueberry.
中文翻译:
秋季施用草铵膦、春季施用草铵膦和春季施用非生育年草铵膦对低丛蓝莓毛羊茅(Festuca filiformis)的影响
毛羊茅是一种常见的多年生草,会降低低丛蓝莓地的产量。这种草在非生育年施用甲磺隆时受到抑制,尽管通过使用连续的草铵膦和甲磺隆施用可以改善抑制。本研究的目的是确定秋季生育年草铵膦施用、春季非生育年草铵膦施用和春季非生育年甲磺隆施用对头发羊茅的主要和交互影响。该实验是秋季生育年草铵膦施用的 2 x 2 x 2 因子排列(0、750 g ai ha–1 ), 春季非生育年草铵膦应用 (0, 750 g ai ha–1 ) 和春季非生育年福尔马磺隆施用 (0, 35 g ai ha–1 ) 以随机完整区组设计排列在位于加拿大 NS 的 Parrsboro 和 Portapique 的低灌木蓝莓田中。秋季生育年草铵膦施用、春季非生育年草铵膦施用和春季非生育年甲磺隆单独施用提供不一致的毛发羊茅抑制。然而,秋季在生育年施用草铵膦,随后在春季非生育年施用甲磺隆,降低了每个地点的非生育年总簇密度、开花簇密度和开花簇花序数,并减少了 Portapique 的种子产量。连续秋季生育年和春季非生育年草铵膦应用或连续春季非生育年草铵膦和甲磺隆应用降低了每个地点的开花簇密度和开花簇花序数,但并没有持续降低总簇密度。连续除草剂处理降低了生育年幼苗密度,因此可能有助于低丛蓝莓的毛羊茅种子库管理。
更新日期:2020-11-04
中文翻译:
秋季施用草铵膦、春季施用草铵膦和春季施用非生育年草铵膦对低丛蓝莓毛羊茅(Festuca filiformis)的影响
毛羊茅是一种常见的多年生草,会降低低丛蓝莓地的产量。这种草在非生育年施用甲磺隆时受到抑制,尽管通过使用连续的草铵膦和甲磺隆施用可以改善抑制。本研究的目的是确定秋季生育年草铵膦施用、春季非生育年草铵膦施用和春季非生育年甲磺隆施用对头发羊茅的主要和交互影响。该实验是秋季生育年草铵膦施用的 2 x 2 x 2 因子排列(0、750 g ai ha