Increased infestation of aggressive creeping perennial weeds is a significant problem in urban vegetation management programs. These weeds produce vigorous biomass and extensive underground networks of either rhizomes or creeping roots that easily regrow from numerous buds. Foliar application of proper systemic herbicides has been a most effective way to suppress regrowth from underground creeping organs; however, killing the mature plants has disadvantages from aesthetic, economic, and ecological viewpoints. Therefore, we intended to test the possibility of soil‐injection of soil‐active herbicides for effective control of the perennial weeds which develop underground network systems. A pot experiment using combinations of seven species (seven rhizomatous and two having creeping roots) and five chemicals (four herbicides and a plant growth regulator) was conducted to assess whether and how chemicals diffused in soil affect the sprout and growth of buds on creeping organs. All the tested herbicides completely inhibited bud sprouting in one and more species when applied at median or high rates, while most of the flurprimidol‐applied segments sprouted but shoot elongation was significantly reduced. Characteristics of each herbicide were also reflected in the selectivity and features of new outgrowth. The results indicated that chemicals existing in soil were undoubtedly absorbed and affected bud activities. It is concluded that soil injection that delivers the probable soil‐active chemicals to subterranean creeping systems could be a promising technology for controlling noxious creeping perennials.

中文翻译：

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通过土壤活性化学剂注射建立对多年生杂草的定性控制：评估地下芽在接触中的响应

侵略性多年生杂草的侵扰增加是城市植被管理计划中的重要问题。这些杂草会产生旺盛的生物量，并形成根茎或爬行根的广泛地下网络，这些网络很容易从众多芽中长出。叶面喷洒适当的系统性除草剂是抑制地下爬行器官再生的最有效方法。但是，从美学，经济和生态的角度来看，杀死成熟植物都有其弊端。因此，我们打算测试在土壤中注入土壤活性除草剂以有效控制开发地下网络系统的多年生杂草的可能性。进行了一项盆栽实验，使用了七个物种（七个根茎，两个带有蠕变的根）和五种化学物质（四种除草剂和一种植物生长调节剂）的组合，以评估土壤中扩散的化学物质是否以及如何影响蠕变器官上的芽和芽的生长。当以中值或高剂量使用时，所有测试过的除草剂都完全抑制了一个或多个物种的芽萌发，而大部分氟草泼醇施用的片段均已萌芽，但枝条伸长率明显降低。每种除草剂的特征还反映在新产物的选择性和特征上。结果表明土壤中存在的化学物质无疑被吸收并影响芽的活动。