Enhancement of Yield and Nitrogen and Water Use Efficiencies by Nitrogen Drip‐Fertigation of Garlic

Authors:
Publisher website
Google Scholar
Abstract
Two field experiments were conducted to evaluate response of garlic yield, and nitrogen (N) and water use efficiencies (NUE and WUE) to N applied by fertigation or conventional soil application. The following treatments were included: 0, 30, 60, and 90 mg L−1 N in the irrigation water. Additional two treatments of soil application of N (single or split) equivalent to one fertigation treatment were included. Garlic was planted in two growing seasons. Irrigation was applied to replenish 80% of the Class A pan evaporation twice each week. Neutron probe readings were taken at different soil depths and used to determine crop evapotran‐spiration (ETc), WUE, and crop coefficient (Kc). Labeled N fertilizers (15N) were applied to a micro‐plots within each plot. At harvest, plant samples were taken from the micro‐plots for 15N measurements and NUE determination. Sampling from macro‐plots was used to determine yield. Results indicate that yield responded positively to N regardless of method of application. ...

This publication has 23 references indexed in Scilit: