Biotech Studies 2013, Vol 22, Num, 2     (Pages: 041-058)

Effects of Forecrops on Quality of Some Bread Wheat (Triticum aestivum L.) Cultivars


1 Tarla Bitkileri Merkez Araştırma Enstitüsü Müdürlüğü, Ankara
2 Ankara Üniversitesi Ziraat Fakültesi Tarla Bitkileri Bölümü, Ankara
- This research was carried out at the University of Research and Application Farm, Faculty of Agriculture, Ankara, during 2009-2010 and 2010-2011 growing seasons. The experiments were set up on the plots where two year crop rotation researches have been conducted approximately since 1985 by Central Research Institute for Field Crops. In this research, 9 different previous crops (fallow, continuous wheat, chickpea, winter lentil, spring oat, spring lentil, sunflower and safflower) and 4 bread wheat cultivars (Bayraktar-2000, Eser, Gerek-79 and Tosunbey) were used. . Samples were analyzed after had milled in Quality Laboratory of Central Research Institute for Field Crops. In the study; kernel hardness, flour yield, protein content, Zeleny sedimentation, ash, falling number, wet gluten, dry gluten, gluten index and glutograph, properties were investigated.

According to research results; the highest protein content was 17.3 % (dry matter) from Tosunbey (278 kg/da) after safflower in the first year and 15.5 % (dry matter) from Gerek-79 (375 kg/da) after spring lentil in the second year. The highest ash content was 0.49 (dry matter) from Eser after common vetch in the first year and 0.82 (dry matter) from Tosunbey after common vetch in the second year. Principal component analysis (PCA) of quality parameters for two years showed that Tosunbey gave the best values after different cover crops for quality in dry season the 1.yYear and rainy season the 2. year. Variety X Previous crop interactions of all parameters were significant except grain hardness. Keywords : Previous crop, crop rotation, dry farming, bread wheat, quality