Oklahoma State University

Fertility

Fertility

Nitrogen Requirements of Contemporary Cotton Cultivars

Lugert Altus Irrigation District Deep Sampling Handout

 

Nitrogen fertilizer recommendations in Oklahoma were changed in 2012.  Cotton Yield Goal – Nitrogen Rate Recommendation, Fact Sheet PSS 2158 (PDF)

 

Some areas with high nitrate-nitrogen concentrations in groundwater need to determine how much nitrogen is being provided through pumping.  Total Amount of N Delivered (Expressed in Pounds of N Per Acre) from Varying Irrigation Water NO3-N Concentrations and Irrigation Amounts (PDF).

 

This link takes you to the OSU Plant and Soil Sciences Soil, Water and Forage Analytical Laboratory homepage

 http://www.soiltesting.okstate.edu/

 

This link takes you to the  Texas A&M AgriLife Cotton Resource Website - Fertility

http://cotton.tamu.edu/Fertility.html

 

 

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