Nutrient Management Minute #86
Week of September 16, 2002 (November 25 kill date)
John Creswell, Coordinator
Nutrient Management Education Project
Iowa State University Extension
Cornstalk Nitrogen Test
This is John Creswell for Iowa State University Extension with a Nutrient Management Minute.
This week, we'll talk about testing cornstalks for nitrate at the end of the growing season. Testing cornstalks for nitrate concentrations is a way to determine if you applied more nitrogen than needed for this year’s corn crop. Data collected over several years can help you evaluate your nitrogen management program.
Collect cornstalk samples within one to three weeks after kernel black layer by cutting fifteen, eight-inch stalk sections per sample, starting six inches above the soil surface. Then, send samples to a laboratory for analysis.
Good nitrogen management ensures the best economic return to applied nitrogen, and helps protect water quality.
For more information on the cornstalk nitrogen test, call your county Extension office and ask for Pamphlet PM-1584, Cornstalk Testing to Evaluate Nitrogen Management.
This has been John Creswell for Iowa State University Extension with a Nutrient Management Minute.
1999 WRIGHT COUNTY MANURE NUTRIENT MANAGEMENT DEMONSTRATION ON OCTOBER
2 NUTRIENTS AND THEIR SOURCES STUDY SESSION 2 NUTRIENTS
25 INTEGRATED NUTRIENT MANAGEMENT FOR MORE SUSTAINABLE CASSAVA PRODUCTION
Tags: management minute, nutrient management, september, nutrient, management, minute