Turkish Journal of Field Crops


90 232 311 26 79




2. Beyler İş Hanı, No: 313 Kat: 3 Konak-İzmir




This study determines the effects of phosphorus, applied in various doses (0-30-60-90-120 kg ha-1 ), on the seed yield, protein and amino acid content of the faba bean (Salkim, Filiz and Kitik). The study was conducted in the 2022 and 2023 growing seasons in the experimental field of the Faculty of Agriculture of Aydin Adnan Menderes University. The effect of different interactions of cultivar and phosphorus dose on the seed yield and on the levels of the amino acids aspartic acid, serine, alanine, arginine, threosine and histidine was found to be significant, as was the effect of the phosphorus dose on the protein ratio. The optimum values for the seed yield (2.14t ha-1 ) and protein (26.4%) were obtained when the phosphorus was applied at 60kg ha-1 . Among the cultivars, Kitik achieved a higher yield and protein ratio than the others. Arginine (1.056g/100g) and aspartic acid (1.125g/100g) were the amino acids found in the greatest quantities in the faba beans. However, while methionine (0.087g/100g) and cysteine (0.085g/100 g) were the essential amino acids present in the smallest quantities, the application of phosphorus increased the levels of these amino acids. As a result, the changes brought about in the yield, protein content and amino acid content of the faba bean cultivars by applying various doses of phosphorus were determined, revealing ways in which the nutritional value of the seeds might be enhanced.

Keyword: Amino acid, faba bean, phosphorus, protein ,

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


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