Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2768

Full Length Research Paper

Influence of late-season nitrogen application on chlorophyll content and leaf area index in wheat

Burhan Kara1* and Metin Mujdeci2
  1Department of Field Crops, Faculty of Agriculture, Suleyman Demirel University, Isparta, Turkey. 2Department of Soil Science, Faculty of Agriculture, Suleyman Demirel University, Isparta, Turkey.
Email: [email protected]

  •  Accepted: 14 July 2010
  •  Published: 18 August 2010

Abstract

 

The research was conducted in Isparta ecological conditions during the 2006 - 2007 and 2007 - 2008 crop growing seasons. The purpose of the study was to determine the effects of late-season N application (LSN) on chlorophyll content and leaf area index (LAI) of wheat. The experiment was laid out in as Randomized Complete Block split-plot design with three replications. Gün-91, Gerek-79 and Altay-2000 wintery bread wheat cultivars were used. Nitrogen was applied as conventional N (two equal amounts at seed sowing and tillering stage) and late-season N supplies (one-third of was applied during sowing, one-third at the tillering stage and the rest was applied as foliar at post-pollination stage). Chlorophyll content and LAI were significantly affected by N applications in both years. Chlorophyll content an LAI of wheat cultivars varied, depending on cultivars, N application forms and growing period. The highest chlorophyll content was obtained from Gerek-79 x conventional N application during the ear-emergence period (51.8), and in the second year it was determined in Altay-2000 x LSN application (51.1). In the first year, the highest LAI was obtained from Gün-91 x conventional N application during flowering period (9.46), and in second year it was determined in Altay-2000 x conventional N application (9.71).

 

Key words: Wheat, leaf area index, chlorophyll, N application.