Volatilization Losses from Sprinkler Applied Nitrogen Blythe - PowerPoint PPT Presentation

Volatilization Losses from Sprinkler Applied Nitrogen Blythe McAfee

Application Techniques • Sprinkler irrigation • Gravity irrigation • Micro irrigation • Surface spreading • Injection www.farmprogress.com, www.watercenter.unl.edu, www.nelsonirrigation.com

Ammonium Ammonia + + NH 4 NH 4 + NH 4 NH 3 NH 3 NH 3 + NH 4 + NH 4 + NH 4 + NH 4

+ NH 4 NH 3 NH 3 + NH 4 NH 3 + NH 4 NH 3 NH 3 + NH 4 NH 3 + NH 4 + NH 4 NH 3 + NH 4 + NH 4 NH 3 + NH 4 + + NH 4 NH 4 + NH 4 NH 3 NH 3 + NH 4 + NH 4 + + NH 4 NH 4 NH 3 + NH 4 + NH 4 + NH 4 + NH 4 + NH 3 NH 4 NH 3 + + NH 3 NH 4 NH 4 NH 3 NH 3 NH 3 + + NH 4 NH 4 + NH 4 + NH 4 + NH 3 NH 4 NH 3 + NH 4 NH 3 NH 3 + NH 4

Environmental Factors Soil Weather • pH • Wind speed • Temperature • Humidity • Soil texture • Atmospheric temperature • Water content

Which Factors Increase Volatilization? Acidic (low pH) Alkaline (high pH) Fine Soils Coarse Soils Wet Soil Dry Soil Low Temps High Temps Low Wind Speeds High Wind Speeds Low Humidity High Humidity

How much do we lose?

My Research

Which Increase Volatilization? Acidic (low pH) Alkaline (high pH) Fine Soils Coarse Soils Wet Soil Dry Soil Low Temps High Temps Low Wind Speeds High Wind Speeds Low Humidity High Humidity

• Nebguide G1335 • http://water.unl.edu/manure/

Thank you! Questions?