Penn State University Cover Crop Cocktails: Surface Soil Inorganic Nitrogen Data

The dataset is a cleaned/summarized version of data collected from 2012-2022 at the Cover Crop Cocktail site for surface soil inorganic nitrogen. Surface soil samples are collected approximately monthly during cover crop growing season. Data include sampling timepoint information (date, year, month, day), sampling plot information (entry, block, plot, strip), cover crop treatment, crop window, and sample values (nitrate and ammonium in parts per million (ppm) and milligrams of nitrogen per kilogram of soil (mg N/kg soil); total nitrogen in mg N/kg soil).

本数据集为2012年至2022年间在Cover Crop Cocktail站点采集的表层土壤无机氮数据的经清洗与汇总版本。在覆盖作物生长季内，约每月采集一次表层土壤样本。数据涵盖采样时间点信息（日期、年份、月份、日）、采样地块信息（entry、block、plot、strip）、覆盖作物处理方案、作物生长窗口期，以及样本检测值：硝酸盐与铵态氮的含量以百万分比(ppm)及每千克土壤含氮毫克数(mg N/kg soil)计，总氮含量以mg N/kg soil计。