How does soil organic matter affect potato productivity on sandy soil?

While many studies note the positive effects of soil organic matter (SOM) on crop yields, there is limited quantitative information on the influence of increased SOM on potato productivity in sandy soil. This study estimated the impact of varying SOM on potato productivity in sandy soils and explored whether nitrogen (N) mineralization served as a primary mediator. Soil from nine fields in Wisconsin (SOM range of 1.1 to 3.8 %) was collected for a greenhouse study. Both NH4-N and NO3-N extracted from ion strips and potentially mineralizable nitrogen (PMN) were used as the proxies for N mineralization. Linear mixed effect models indicated that fresh matter whole biomass and dry matter vine biomass were 0.45 and 0.54 times greater at 3.8 % SOM compared to 1.1 % SOM at an optimal soil pH of 5.2, respectively. Similarly, total N uptake in the whole and vine biomass was 0.51 and 1.0 times higher at 3.8 % SOM than 1.1 % SOM, respectively. While PMN demonstrated a positive correlation with SOM,..., , , # How does Soil Organic Matter Affect Potato Productivity on Sandy Soil? [https://doi.org/10.5061/dryad.wstqjq2t9](https://doi.org/10.5061/dryad.wstqjq2t9) This dataset investigates the impact of Soil Organic Matter (SOM) on potato productivity in sandy soil. The data is derived from an experimental study that includes various treatments, replications, and measured parameters related to soil properties and potato growth. The dataset provides insights into the relationships between soil characteristics and potato productivity. ## Description of the data and file structure The dataset consists of several columns representing different aspects of the experimental setup, soil properties, and potato growth. Some key columns include: Treatments: Different experimental treatments applied.            N1 = 0 nitrogen            S1, 2, 3 = Replications 1, 2, 3            FF, NF, W, L, RE, TN, DH, GS, NW= Nine different abbreviated fieldnames Reps: Replications of each treatment. Fieldnames...尽管已有诸多研究证实土壤有机质（Soil Organic Matter, SOM）对作物产量的正向调控作用，但针对砂质土壤中SOM含量提升对马铃薯生产力的影响，当前仍缺乏系统的定量研究数据。本研究旨在定量评估砂质土壤中不同SOM水平对马铃薯生产力的影响，并探明氮（Nitrogen, N）矿化是否为其核心介导因子。 本研究从美国威斯康星州的9块农田采集土壤样品（SOM含量范围为1.1%至3.8%），用于开展温室培养试验。本研究采用离子交换膜条带提取的铵态氮（Ammonium Nitrogen, NH4-N）与硝态氮（Nitrate Nitrogen, NO3-N），以及潜在可矿化氮（Potentially Mineralizable Nitrogen, PMN）作为氮矿化的替代表征指标。 线性混合效应模型（Linear Mixed Effect Models）分析结果显示，在土壤pH值为最佳值5.2的条件下，当SOM含量为3.8%时，马铃薯全株鲜生物量与藤部干生物量分别较SOM含量1.1%时提升0.45倍与0.54倍。同理，当SOM含量为3.8%时，全株与藤部生物量的总氮吸收量分别较1.1%SOM时提升0.51倍与1.0倍。尽管PMN与SOM呈显著正相关…… # 砂质土壤中土壤有机质如何影响马铃薯生产力？ [https://doi.org/10.5061/dryad.wstqjq2t9](https://doi.org/10.5061/dryad.wstqjq2t9) 本数据集旨在探究砂质土壤中土壤有机质（SOM）对马铃薯生产力的影响。数据源自一项涵盖多组处理、重复试验以及土壤特性与马铃薯生长相关测定参数的实验研究，可为解析土壤特性与马铃薯生产力之间的内在关联提供科学参考。 ## 数据与文件结构说明 本数据集包含多列数据，分别对应试验设计、土壤特性与马铃薯生长的不同维度。核心列项包括： 处理组（Treatments）：施加的不同试验处理 N1 = 0氮素施加组 S1、S2、S3：第1、2、3次重复 FF、NF、W、L、RE、TN、DH、GS、NW：9个不同的农田缩写名称 重复次数（Reps）：各处理的重复次数 农田名称（Fieldnames）……