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Article
Application checkpoints for fall ammonia
Integrated Crop Management News
  • H. Mark Hanna, Iowa State University
  • John E. Sawyer, Iowa State University
Document Type
Article
Publication Date
10-21-2001
Abstract

Depending on postharvest field conditions, some producers will soon be considering anhydrous ammonia application. Using fall labor to apply fertilizer can be attractive but needs to be balanced with the potential for nutrient loss. To avoid conversion of anhydrous ammonia from ammonium to more leachable forms of nitrogen, application should be delayed until average soil temperature is below 50°F and trending lower. Measure the 4-inch soil temperature at near 10 a.m. or 7 p.m. or check Iowa State University's county soil temperatures and forecast.

Copyright Owner
Iowa State University
Language
en
File Format
application/pdf
Citation Information
H. Mark Hanna and John E. Sawyer. "Application checkpoints for fall ammonia" (2001)
Available at: http://works.bepress.com/mark_hanna/93/