Quantifying the response of Goldrush potato to nitrogen on sandy soil

Optimizing nitrogen (N) application rate is essential for effective N management and requires an understanding of crop growth dynamics, nutrient partitioning, cultivar traits, and soil characteristics. This dataset contains plot-level measurements from a three-year nitrogen (N) rate experiment with the potato cultivar ‘Goldrush’ grown on irrigated sandy soils at the Hancock Agricultural Research Station in central Wisconsin, USA (2015–2017). Seven in-season N fertilizer rates, ranging from 37 to 391 kg N ha -1 including starter N, were applied in a randomized complete block design with four replications each year. The dataset is structured at the plot × year level and includes repeated measurements at early- and late-growth stages as well as final harvest. For each plot, the dataset provides aboveground biomass and tuber dry matter, tissue N concentration, and calculated N uptake in aboveground and tuber fractions at approximately 45 and 75 days after emergence and in total crop biomass..., Field experiments were conducted at the Hancock Agricultural Research Station (central Wisconsin, USA) during the 2015, 2016, and 2017 potato growing seasons. Each year, the trial was established in a different adjacent field on Plainfield loamy sand (Typic Udipsamment), under a regional rotation with soybean in the previous year and winter rye as a cover crop. The experimental design was a randomized complete block with four blocks per treatment and seven N fertilizer rates, resulting in 28 plots per year. Plots were approximately 7.3 m wide and 6.1 m long and were irrigated with well water according to standard station management. The potato cultivar ‘Goldrush’ was planted at a target population of ~34,000 plants ha -1. All plots received a common starter fertilizer at planting that supplied N, P, K, S, micronutrients, and a systemic insecticide. In-season N was applied in one to three split applications at emergence (hilling), hook stage (early tuber initiation), and two weeks after ..., # Quantifying the response of Goldrush potato to nitrogen on sandy soil Dataset DOI: [10.5061/dryad.r4xgxd2sz](https://doi.org/10.5061/dryad.r4xgxd2sz) ## Description of the data and file structure ### Files and variables #### File: Nrate_rawdata.csv **Description:** This dataset contains raw agronomic data collected from field experiments evaluating nitrogen (N) fertilizer rates and their effects on dry matter partitioning, nitrogen uptake, and yield components in potato cv. Goldrush. Field trials were conducted during the 2015 - 2017 growing seasons at the Hancock Agricultural Research Station in Wisconsin, USA. ##### Variables * TotalNapplied: Nitrogen (N) fertilizer application rate in kg-N/ha. 37 kg-N/ha was applied as a starter at planting; all remaining rates received 68 kg-N/ha at emergence. Rates then varied across the final two applications: at tuber emergence and two weeks later. * block: The study was design in a randomized complete block with four replicates (blocks)..., ,