Turkish Journal of Field Crops

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THE EFFECTS OF VARYING ROW SPACING AND PHOSPHORUS DOSES ON THE YIELD AND QUALITY OF FENUGREEK (Trigonella foenum-graecum L.)

Rüveyde TUNÇTÜRK

Abstract

This study was conducted to determine the effects of different row spacing (20, 30 and 40 cm) and phosphorus applications (0, 30, 60 and 90 kg ha-1 ) on the yield and quality of fenugreek in Van-Turkey, in 2006 and 2007 growing seasons. Field experiments were arranged in Completely Randomized Block Design with three replications at the experimental fields of Agricultural Faculty of Yuzuncu Yil University. As a result of the research, while all the growth and yield parameters except for thousand seed weight and protein content were significantly affected by row spacing applications. Phosphorus fertilizer applications positively affected all the traits examined except for pod length. Consequently, the highest seed yield (777.0-785.0 kg ha-1 ) was obtained from 30 cm row spacing in the both experimental years, respectively. In phosphorus applications, while the highest seed yield (731.0 kg ha-1 ) was obtained from 60 kg P ha-1 applications in 2006 year, the highest seed yield (742.0 kg ha-1 ) was obtained from 90 kg P ha-1 applications in 2007 year. But, between 60 and 90 kg P ha-1 applications there was not an important difference in the both experimental years. However, the highest protein content (23.0 %) was obtained from 20 cm row spacing and 30 kg P ha-1 applications in the 2006 year.

Keyword: Fenugreek, phosphorus, row spacing, yield ,

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