Common blue violet is a widely distributed, perennial broadleaf that is difficult to control in lawns. Two experiments were conducted to evaluate the efficacy of synthetic auxin herbicides and their mixtures or rate for common blue violet control. A herbicide comparison experiment was conducted with treatments including a nontreated check; 2,4-D dimethylamine; 2,4-D isooctyl ester (2,4-D ester); dichlorprop (2,4-DP) ethylhexyl ester, MCPA dimethylamine; mecoprop dimethylamine; triclopyr butoxyethyl ester; quinclorac; and mixtures of triclopyr + quinclorac; 2,4-D ester + 2,4-DP; 2,4-D ester + triclopyr; 2,4-D ester + 2,4-DP + triclopyr. All herbicides were applied at 1.12 kg ae ha−1 except quinclorac (0.84 kg ha−1). Additionally, a triclopyr dose-response experiment was conducted using rates of 0, 0.14, 0.28, 0.56, 0.84, and 1.12 kg ha−1. Epinasty ranged from 80% to 99% at 21 d after application for triclopyr-containing treatments and no more than 28% for all other treatments. Plant mass from harvest and regrowth data from the comparison experiment indicated triclopyr-containing treatments provided the highest common blue violet control. Mixtures containing triclopyr did not differ from triclopyr alone, indicating there was no added effect between herbicide mixtures. The triclopyr dose-response experiment confirmed triclopyr efficacy across data collection types. As triclopyr dose increased, violet epinasty increased and chlorophyll content and dry weight decreased. Triclopyr applied at 0.81 kg ha−1 or greater concentration provided 75% or greater control, as indicated by regrowth data. Many herbicides containing triclopyr are registered for use in turf, but most apply a concentration not greater than 0.56 kg ha−1 triclopyr when applied at the high label rate. Thus, to achieve good (75%) common blue violet control, turf managers should select products that contain triclopyr and apply doses of at least 0.81 kg ha−1 when used according to the label.

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绿草定和合成生长素除草剂混合物对普通蓝紫罗兰（Viola sororia）控制的功效

常见的蓝紫罗兰是一种分布广泛的多年生阔叶植物，在草坪上难以控制。进行了两个实验来评估合成生长素除草剂及其混合物或比率对普通蓝紫色控制的功效。除草剂比较实验进行了处理，包括未处理的检查；2,4-D 二甲胺；2,4-D异辛酯（2,4-D酯）；二氯丙(2,4-DP)乙基己酯，MCPA二甲胺；氯丙酸二甲胺；绿草定丁氧基乙酯；喹氯酸；以及绿草定+喹氯酸的混合物；2,4-D 酯 + 2,4-DP; 2,4-D 酯 + 绿草定；2,4-D 酯 + 2,4-DP + 绿草定。所有除草剂的施用量为 1.12 kg ae ha-1除喹氯酸（0.84 kg ha-1）。此外，使用 0、0.14、0.28、0.56、0.84 和 1.12 kg ha 的比率进行了绿草定剂量反应实验-1. 在应用含绿草定的治疗后 21 天，上瘾率从 80% 到 99% 不等，所有其他治疗不超过 28%。来自比较实验的收获和再生数据的植物质量表明含绿草定的处理提供了最高的常见蓝紫色对照。含有绿草定的混合物与单独的绿草定没有区别，表明除草剂混合物之间没有附加作用。绿草定剂量反应实验证实了绿草定在数据收集类型中的功效。随着绿草定剂量的增加，紫罗兰色增加，叶绿素含量和干重降低。绿草定施用量 0.81 kg ha-1如再生数据所示，或更高浓度提供 75% 或更高的控制。许多含有绿草定的除草剂已注册用于草坪，但大多数使用的浓度不超过 0.56 kg ha-1以高标记率施用绿草定。因此，为了实现良好的 (75%) 常见蓝紫色控制，草坪管理者应选择含有绿草定的产品并施用至少 0.81 kg ha 的剂量-1根据标签使用时。