Turkish Journal of Field Crops

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EFFECT OF SUPPLEMENTAL IRRIGATION ON YIELD AND BREADMAKING QUALITY OF WHEAT (Triticum aestivum L.) VARIETIES UNDER THE MEDITERRANEAN CLIMATICAL CONDITIONS

Osman EREKUL , Klaus-Peter GOTZ , Talih GURBUZ

Abstract

This study was conducted to determine the suitable irrigation dose (0, 40, 80 and 120 mm) to compansate yield and bread-making quality of four common wheat varieties under the Mediterranean ecological conditions for two years. Grain yields of Pamukova, Sagittario, Fiorino and Golia ranged between 2864 kg ha-1 (Golia, 0 mm) and 6021 kg ha-1 (Sagittario, 80 mm). The supplemental irrigation caused the grain yield to increase significantly up to 58%. The highest grain yields could be ensured with a supplemental irrigation of 80 mm. The protein content, sedimentation value and gluten index among the bread making quality parameters have been found to be at the highest levels for all varieties in both trial years when no supplemental irrigation has been applied. Increases of gluten index were observed with supplemental irrigations. Optimum levels of quality characteristics were obtained with 80 mm supplemental irrigation which is also suited to the level of the highest grain yield. Thus it could be suggested that in order to combine acceptable quality characteristics with the highest grain yield in the region, a supplemental irrigation up to 80 mm could be applied.

Keyword: Wheat, yield, bread-making quality, supplemental irrigation. ,
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Effects of Different Water Stress Levels on Biomass Yield and Agronomic Traits of Switchgrass (Panicum virgatum L.) Varieties under Semi-Arid Conditio

Erdal GONULAL, Suleyman SOYLU, Mehmet SAHIN

Abstract

A field experiment was conducted in the Wielkopolska region at the Gorzyń Research Station, Poland (52.34°N, 15.54°E) in Central Europe. The study was conducted over a 3-year period (2017, 2018, 2019) as a two-factorial design with four replications in the RCBD. The aim of the research was to determine the effect of the cultivar (‘Bolero’, ‘Tytan’) and the inoculation (Nitragina–seeds inoculation, Nitroflora I–seeds inoculation, Nitroflora II–soil inoculation, HiStick® Lupin–seeds inoculation) on plant development, seeds chemical composition and yielding of narrow-leaved lupin. The weather conditions and experimental factors significantly influenced on productivity of narrow-leaved lupin ‘Tytan’. Drought during the growing season reduced seeds and protein yields. After inoculation of HiStck the seeds yield was significantly greater by 12.4% (p < 0.01) and the protein yield after application of Nitroflora I or HiStick by 13.9% (p < 0.01) and 19.2% (p < 0.01), respectively. Correlation coefficients showed strong relations between number of pods and seeds per plant in both cultivars regardless of the inoculation variant, however the strongest relations in both cultivar were proved on HiStick treatment.
Keyword: Biological nitrogen fixation, chemical composition, legumes, protein efficiency, yielding
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