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Effect of Subsurface Drip Irrigation Capacity and Nitrogen Fertigation Timing on Corn Production

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  131593348,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: 10.13031/aim.20131593348) @2013
Authors:   Freddie R Lamm, Alan J. Schlegel
Keywords:   Microirrigation, corn, nutrient management, irrigation, fertigation, nitrogen management

Abstract. A study was conducted at the KSU Northwest Research-Extension Center at Colby, Kansas in 2010 and 2012 to examine subsurface drip irrigation (SDI) capacity and nitrogen fertigation timing on corn production. Targeted SDI N fertigation events at 3 specific early season growth stages (V5, V9 or VT) were compared under 2 levels of irrigation (6.4 or 3.2 mm/day). Treatment effects were evaluated in terms of corn yield components, crop water use, and crop water productivity. Analysis indicates that conjunctive management of both irrigation and inseason N fertigation are important for corn production with SDI and that results are affected by annual weather conditions.

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