Improving Nitrogen Fertilizer Management in Sprinkler-Irrigated Cotton

IPNI-2015-USA-AZ09

Water and nitrogen (N) are the first and second constraints to cotton production in the western U. S, respectively (Morrow and Krieg, 1990). Great strides have been made in improving surface irrigation management and water application uniformities in the western US, with the wide adoption of laser leveling. However, the more efficiency overhead sprinkler and subsurface drip irrigation is slowly being adopted in western states like Arizona. Read more


Year of initiation:2015
Year of completion:2016
Map:

Interpretive Summary

2016

Aside from water, nitrogen (N) is the main limitation in cotton production in the western USA. Flood irrigation techniques are commonly used in Arizona cotton production, despite the relative inefficiency of these systems. With declining water resources there is increased interest in more efficient systems such as overhead sprinkler (center-pivot and linear-move) and subsurface drip (SSD) irrigation. But, N fertigation research for cotton in these systems is lacking.

2015

Aside from water, N is the main constraint to cotton production in the western USA. Because of existing canal infrastructure, flood irrigation techniques are commonly used in Arizona cotton production, despite relatively low N recovery (15 to 34%) in these systems. With declining water resources, there is increased interest in center-pivot or linear-move overhead sprinkler systems, but N management research for cotton in these systems is lacking in the far western US.


Updates & Reports

2016

2016 Annual Report

2015

Project Description


Project Leader

Kevin Bronson, USDA-ARS


Project Cooperators

Pedro Andrade-Sanchez, Univ of Arizona
Doug Hunsaker, USDA-ARS


IPNI Staff

S. Phillips
R. Mikkelsen


Location

Americas \ Northern America \ USA \ Arizona


Topics

irrigation, nutrient use efficiency, water use efficiency

cotton

Nitrogen (N)