Data from: Late-season corn stalk nitrate measurements across the US Midwest from 2006 to 2018

This dataset is based on field-guided corn stalk nitrate test surveys across the US Midwest from 2006 to 2018. In total, measurements from 10,675 corn fields were collected which represents 32,025 corn stalk nitrate measurements. Nitrogen form (commonly referred to as N source10) and the total N rate applied, US state, year of harvest, and climatic conditions are included for each site-year (trial location by growing season combination). When available, previous crop, manure source, tillage, and timing of N application are also included.