Exploring Tools to Monitor In-Season Crop Nitrogen Status

2020

  • Mack Naber
  • Yi Wang
  • University of Wisconsin, Madison, Department of Horticulture
  • University of Wisconsin, Madison, Department of Horticulture
Project Media

Nitrogen management on sandy soils is challenging by limited nutrient capacity couples with rain events exceeding the water storage capacity of the crop root zone, which can quickly change plan available nitrogen. The findings presented here are from the first two years of a three-year study with two objectives: firstly, to compare in-season plant tissue samples, petiole, whole leaf and whole vine and total nitrogen for determining plant nitrogen status and correlation with final yield; secondly to compare optimum applied nitrogen rates of developing varieties to varieties widely grown in Wisconsin.