Tarp impacts on crop yields

These data demonstrate the impact of tarps on crop yields (for lettuce, <em>Lactuca sativa</em>). We planted lettuce 1 week after tarp removal and harvested lettuce after 4 weeks of growth. At the time of harvest, we counted the number of lettuce individuals that grew within each plot (1 m x 2 m). We then harvested the lettuce and (after washing and drying it) measured the total weight (crop yield) of all lettuce individuals in each plot. For more information, please refer to Kinnebrew et al. 2022 (https://doi.org/10.1080/21683565.2022.2146254) or contact Dr. Kinnebrew at [e-mail]. <br> Column Names and Explanations: <br> 1. Farm: the farm site (“A,” “B” or “C”) where the plot was located. All farms were located in Chittenden County, Vermont, USA 2. Treatment: indicates the treatment type (silage tarps, clear plastic tarps, or control) 3. Plot_Replicate: the treatment replicate number on each farm (1-6 for each treatment on each farm) 4. Plot_ID: the unique identifier for each spatial plot 5. Number_lettuce: number of lettuce individuals in each plot 6. Total_Crop_Weight: weight in grams of all lettuce plants (cleaned and dried) within the plot boundaries. This weight is used to indicate crop yields.

本数据集展示了覆盖篷布对生菜（*Lactuca sativa*）作物产量的影响。我们于移除篷布1周后播种生菜，并在生菜生长4周后进行收获。收获时，我们统计了每个1米×2米样地内的生菜植株数量。随后收割样地内全部生菜，经清洗、干燥处理后，称量每个样地内所有生菜植株的总重量，即作物产量。
如需获取更多信息，请参考Kinnebrew等人2022年的研究（https://doi.org/10.1080/21683565.2022.2146254），或通过邮箱[e-mail]联系Kinnebrew博士。
列名及说明：
1. 农场（Farm）：样地所在的农场站点，取值为"A""B"或"C"。所有农场均位于美国佛蒙特州奇滕登县。
2. 处理组（Treatment）：表示处理类型，包含青贮篷布处理、透明塑料篷布处理与对照组。
3. 样地重复编号（Plot_Replicate）：每个农场内对应处理组的重复编号，每个农场的每种处理组均设有1至6号重复。
4. 样地唯一标识（Plot_ID）：每个空间样地的唯一标识符。
5. 生菜植株数量（Number_lettuce）：每个样地内的生菜植株总数。
6. 作物总重量（Total_Crop_Weight）：样地边界内所有经清洗、干燥处理的生菜植株的总重量（单位：克），该指标用于表征作物产量。