Turkish Journal of Field Crops

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THE EFFECT OF VARIOUS LONG-TERM TILLAGE SYSTEMS ON YIELD AND YIELD COMPONENT OF YELLOW AND NARROW-LEAVED LUPIN

Agnieszka FALIGOWSKA, Jerzy SZUKAŁA

Abstract

A field experiment was conducted in the Wielkopolska region (52◦29’ N, 16◦49’ E, Poland) in Central Europe. The study was conducted over a 3-year period (2008, 2009, 2010) as a two-factorial desingn with four replications in the randomised plots The first factor consisted of lupin species (S): yellow lupin (YL) and narrow-leaved lupin (BL); the second factor was the adopted soil tillage system (TS): conventional tillage (CT), reduced tillage (RT) and no-tillage (NT). The following tillage systems were applied continuously since 1997 (before 1997 CT was used). YL compared to BL developed significantly higher stems, a greater plant mass, more pods and seeds per plant, but the number of seeds per plant pod and the mass of 1000 seeds were not differentiated between S. The seed yields of lupins were very similar and amounted to 1.15 t ha-1 for YL and 1.01 t ha-1 for BL. NT decreased significantly the plant density both lupin species. The seed yields of both lupin species were very similar and there were not significant differences between TS. For this reason both lupin species may be cultivated in simplified soil tillage systems without losses of seed yields.

Keyword: narrow-leaved lupin, tillage systems, yellow lupin ,
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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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