Concrete grinding residue (CGR) is a byproduct of diamond grinding, a road surface maintenance technique. Direct deposition of CGR along roadsides may influence plant growth, which has not been fully studied. Particularly, systematic experiments of CGR effects on selected common prairie species growth under controlled environments are rarely reported. Thus, in this study, a greenhouse experiment was performed to determine CGR effects on seedling emergence and aboveground biomass for four roadside prairie species: Indian grass, Canada wild rye, partridge pea, and wild bergamot. Nicollet loam and Hanlon fine sandy loam were used, and CGR of 4 rates, 0, 2.24, 4.48, and 8.96 kg m⁻², were applied in two ways, either mixed with the soil or applied on the soil surface. Multiple comparisons indicate that CGR produced mixed impacts on seedling emergence, depending on plant species, while aboveground biomass is not significantly influenced by CGR in general. ANOVA analysis with stepwise linear regression indicates that CGR had no uniform effects on seedling emergence, and CGR impacts should be studied for specific plant species and soil types. In conclusion, while CGR may lead to negative environmental issues on roadside plants depending on the plant species and soil types, if aboveground biomass is a major consideration, CGR effects are negligible. This study provides reference information for regulating CGR depositions along roadsides. Future studies may focus on investigating the relationship between CGR effects on seedling emergence and species succession in actual roadside environments.

中文翻译：

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温室研究中混凝土残渣对部分草原物种出苗和早期生长的影响

混凝土磨碎残余物（CGR）是金刚石磨碎（一种路面维护技术）的副产品。CGR沿路边直接沉积可能会影响植物的生长，尚未进行充分研究。特别是，很少有人报道在受控环境下进行CGR对选定的普通草原物种生长的影响的系统实验。因此，在这项研究中，进行了温室试验，以确定CGR对四种路边草原物种：印度草，加拿大野生黑麦，part豌豆和野生佛手柑的出苗和地上生物量的影响。使用Nicollet壤土和Hanlon细砂质壤土，CGR为4、0、2.24、4.48和8.96 kg m ^-2分别以两种方式施用，与土壤混合或施用在土壤表面。多重比较表明，CGR对幼苗出苗产生不同的影响，具体取决于植物种类，而地上生物量通常不受CGR影响。方差分析的逐步线性回归表明，CGR对幼苗出苗没有统一的影响，应针对特定的植物种类和土壤类型研究CGR的影响。总之，尽管CGR可能会导致路边植物的负面环境问题，具体取决于植物种类和土壤类型，但如果主要考虑地上生物量，则CGR的影响可以忽略不计。这项研究为调节路边的CGR沉积提供了参考信息。