African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6621

Full Length Research Paper

The impact of seed gall nematode on grain yield, quality and marketing prices on durum wheat in Anatolia, Turkey

Irfan Ozberk1*, Siraç Yolcu2, Abuzer Yücel3, Mehmet Köten4 and Julie M. Nicol5  
1Department. of Field Crop, Faculty of Agriculture, the University of Harran, S. Urfa, Turkey. 2Extension service, ViranÅŸehir, Åž. Urfa, Turkey. 3Department of Plant Protections, Faculty of Agriculture, the University of Harran, Turkey. 4Department of Food Engineering, Faculty of Agriculture, the University of Harran, S. Urfa, Turkey. 5Plant pathology, CIMMYT International, Ankara,Turkey.
Email: [email protected]

  •  Accepted: 21 February 2011
  •  Published: 18 August 2011


The objective of this study was to draw the attention for this under estimated pest in the South-east of Anatolia. Field studies were carried out in historically known infested farmer fields to assess the effects of seed gall nematode (Anguina tritici [Steinbuch]) on grain yield, quality and marketing price of durum wheat (Triticum durum Desf.) in the wheat production region of ViranÅŸehir, Anatolia, Turkey during 2008/2009 growing season. Grain yield losses due to A. tritici were reported up to 32%. Seed gall severity corresponded with a decrease in number of grain spike-1, grain weight spike-1, test weight (kg hl-1) and 1000 kernel weight (g). However, the SDS protein content (%) was not affected by increase in seed galls. The price of durum wheat per tonne was reduced from 335 to 297 USD$ with increasing A. tritici contamination (from 5 to 20%). This could be explained by a significant negative regression with grain price against A. tritici (P ≤ 0.01; R= 80.2%). A. tritici has a potential to be one of the major biotic constraints in the irrigated wheat production regions of Anatolia as both yield and grain price were affected. The use of clean seeds should assist in effective control and careful monitoring is a must.


Key words: Grain yield, quality, marketing price, Anguina tritici, durum wheat, seed gall nematodes.