Influence of Nitrogen Fertilizer Application Techniques on

پژوهشهای زراعی ایران

Article 5, Volume 10, Issue 3 - Serial Number 27, October 2012, Pages 532-545   

Document Type: Research Article

DOI: 10.22067/gsc.v10i3.17802

Authors

S. K Mousavi^* ; M Feizian; A Ahmadi

Abstract

In order to evaluate the effect of different nitrogen application methods on yield and yield components of winter wheat, a field experiment with split plot arrangement in randomized completely blocks design with four replicates was conducted during 2006-07. Basal dressing in three levels (with no basal dressing, strip and distributing nitrogen fertilizer) as main plot and top dressing in six levels (distributing on tillering, two distributing on tillering and before spike appearance, water soluble fertilizing with herbicide application before heading, two water soluble fertilizing on tillering and before spike appearance, two application: one distributing on tillering and one water soluble fertilizing before spike appearance and finally, three water soluble fertilizing on tillering, before spike appearance and milking period) as subplot was carried. The amount of fertilizer in strip application was 2/3 of distributing method. In the compartmented application, the amount of applied fertilizer was two third of distributing fertilizer method. Leaf dry weight for strip and broadcasting treatments was 18 percent more than no basal nitrogen application treatments. Effect of basal nitrogen application on wheat biomass and grain yield was not significant, that attributed to wheat lodging. The grain protein percent for strip and broadcasting basal nitrogen application treatments was 15 percent more than protein percent of no basal treatment. Developing cropping systems that use N efficiently is important for reducing costs of N fertilizer inputs and for minimizing nitrate contamination

Keywords

wheat; Nitrogen fertilizer; Basal dressing; Top dressing