Turkish Journal of Field Crops

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THE EFFECT OF GROWING SEASONS ON SOME AGRONOMIC AND QUALITY CHARACTERISTICS OF SOYBEAN VARIETIES IN MEDITERRANEAN REGION IN TURKEY

Halil BAKAL , Leyla GULLUOGLU , Bihter ONAT , Halis ARIOGLU

Abstract

This study was conducted at the Experimental area of Cukurova University in 2013 and 2014 as a main and double crop growing seasons. The objective of this study was to determine the effect of growing seasons on some agronomic and quality characteristics of soybean (Glycine max Merr.) varieties in Mediterranean Region in Turkey. The experimental design was a Randomized Complete Block with three replications. The Arısoy, Atakisi, Ataem-7, Umut-2002, Turksoy, Adasoy, Cinsoy, Ilksoy, Sa-88, S.4240, Blaze and Nova varieties were used as a plant material in this research. The investigated characteristics such as plant height, pod and branch number per plant, the lowest pod height, 1000-seed weight, oil percentage and oil yield values of soybean varieties were higher in main crop than in double crop, whereas the protein percentage values was higher in double crop. The average seed yield of soybean varieties were 4616 kg ha-1 in main crop and it was decreased to 4164 kg ha-1 in double crop growing season. The average seed yield was higher in main crop than in double crop. According to a two-year average, the seed yield per hectare of soybean varieties was varied between 4323-5377 kg ha-1 in main crop and 3194-4667 kg ha-1 in double crop growing

Keyword: Soybean variety, seed yield, growing season, agronomic and quality characteristic ,
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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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