The Effects of Foliar Nitrogen Treatments at Heading Stage on Grain Protein Contents of Bread Wheat Cultivars

Erdinc Savasli, Oguz Onder, Cemal Cekic, Hasan Müfit Kalayci, Ramis Dayıoglu, Yasar Karaduman, Fatma Gokmen, Nesim Dursun, SAIT Gezgin

Abstract


The studies were conducted at Transitional Zone Agricultural Research Institute in Eskisehir and Selçuk University in 2008-2010 growing seasons. Two bread wheat cultivars (Gerek 79 and Bezostaja 1) were used as plant material. Experimental treatments were 0, 30, 60, 90 and 120 kg N ha-1 applied at planting and tillering stages (early-season treatments) and 0, 20, 40 and 60 kg N ha-1 (urea form) applied at heading stage (late-season treatments) as foliar applications. A variation was created in terms of SPAD and TN at heading stage through different nitrogen rates in traditional nitrogen application time. Results under rain-fed conditions revealed that foliar nitrogen at heading stage could increase the protein content at least 1%, and the critical threshold NSPAD value was 0.96 for Bezostaja 1 and 0.94 for Gerek 79. On the other hand, the threshold TN value was 4.22% for Bezostaja 1 and 3.75% for Gerek 79 under the same conditions. The increase in grain protein content of Bezostaja 1 per 10 kg ha-1 of N was 2.0% in early-season and 3.2% in late-season treatments. The same increase rates for Gerek 79 were 1.5% in early-season and 2.7% in late-season treatments. Although both early and late-season treatments were effective on protein content and related quality traits, the application of foliar solution in heading stage was more dominant as compared to the traditional nitrogen application time.

Keywords


Foliar solution; Nitrogen; SPAD; Wheat; Protein

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References


AACC (2000). Approved methods of the American Association of Cereal Chemists, 10th ed. Method 38-12, Method 38-12A, Method 54-50, Method 54-30A. St. Paul, MN, USA

Bremner J M (1965). Nitrogen Ed.: C.A. Black. In: Method of Soil Analysis. Part: II. Chemical and Microbiological Properties. Agronomy Series. No:9. Agron. Inc. Madison. Wisconsin. USA.

Ellen J & Spiertz J H J (1980). Effects of rate and timing of nitrogen dressings on grain yield formation of winter wheat (T.aestivum L.). Fert. Res. 1:177–190.

JMP. 13.0.0. Scintilla - Copyright (C) 1998-2014 by Neil Hodgson;neilh@scintilla.org

Foulkes M J, Hawkesford M J, Barraclough P B, Holdsworth M J, Kerr S, Kightley S & Shewry P R (2009). Identifying traits to improve the nitrogen economy of wheat: Recent advances and future prospects. Field Crops Res. 114: 329-342.

Lorbeer S, Acobsen J, Bruckner P, Wichman D & Berg J (2000). Capturing the genetic protein potential in winter wheat. Fertilizer Facts. Number 23. Montana State Univ.

Markwell J, Osterman J C & Mitchell L J (1995). Calibration of the Minolta SPAD-502 leaf chlorophyll meter. Photosyn. Res. 46, 467–472.

Spiertz J H J (1983). Agronomical and physiological aspects of the role of nitrogen in yield formation of cereals. Plant Soil 75:379–391.

Triboi E & Triboi-Blondel A M (2002). Productivity and grain or seed composition: a new approach to an old problem. Eur. J. Agron;16:163–186.

Westcott M, Eckhoff J, Engel R, Jacobsen J, Jackson G & Stongaard B (1997). Flag leaf diagnosis of grain protein response to late-season N application in irrigated spring wheat. Fertilizer Facts. Number 12. Montana State University.

Wuest S B & Cassman K G (1992). Fertilizer-nitrogen use efficiency of irrigated wheat: I. Uptake efficiency of preplant versus late-season application. Ag.J.84:682–688.

Zhu J & Khan K (2001). Effects of genotype and environment on glutenin polymers and bread making quality. Cereal Chemistry 78: 125-130.




DOI: https://doi.org/10.15316/SJAFS.2017.5

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