Turkish Journal of Field Crops

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

EFFECTS OF SUPPRESSION APPLICATIONS ON SUMMER ASPHODEL (Asphodelus aestivus Brot.) DENSITY, BOTANICAL COMPOSITION, FORAGE YIELD AND QUALITY OF AEGEAN RANGELANDS

Mustafa SURMEN, Emre KARA

Abstract

Summer asphodel (Asphodelus aestivus Brot.) has an underground storage organ that enables the plant to survive extreme conditions and contains alkaloids that are toxic to the livestock in rangelands. For this reason, the experiment was carried out in the rangeland of Aydin province (Turkey) in order to determine the most effective methods of weed management where there is an increase in the summer asphodel (Asphodelus aestivus Brot.) population. In the study, the effects of 8 different control methods (control, mowing, fertilization, paraquat, glyphosate, 2,4-D, 2,4-D + Picloram, grubbing) on yield, quality and botanical composition were investigated. Result of the findings in this study shows that the grasses increased more in vegetation. The highest values of hay yield were observed in paraquat and fertilization applications. High values of crude protein yield were found in fertilization and grubbing applications. The lowest population of summer asphodel (Asphodelus aestivus Brot.) was obtained grubbing and paraquat applications. Together with these results, grubbing, fertilization, paraquat and glyphosate applications come to the fore. However, due to the high workforce, it is significant to choose an application considering the size of the rangeland and the population of the indicator weed species.

Keyword: Asphodelus aestivus, forage quality, herbicide, range improvement, weed control ,

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