Turkish Journal of Field Crops

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

ROW AND PLANT SPACING EFFECTS ON THE YIELD AND YIELD COMPONENTS OF SAFFLOWER IN A MEDITERRANEAN-TYPE ENVIRONMENT

Sevgi CALISKAN, Mehmet Emin CALISKAN

Abstract

This study was conducted to determine the effects of inter-row and intra-row spacing on two safflower cultivars under the Eastern Mediterranean conditions in Hatay, Turkey during 2010-2011 and 2011-2012 growing seasons. The field experiments were laid out in a split split plot design with three replications with two cultivars (Dincer and Remzibey) as a main plot, four inter-row spacing (15, 30, 45 and 60 cm) as sub-plot and three intra-row spacing (5, 10 and 15 cm) as sub-subplot. Seed yield and yield-related traits were lower in both cultivars in 2012 comparing to previous year probably due to lower rainfall. Two years’ data indicated that cultivars, inter-row and intra-row spacing significantly affected growth, yield and yield components of safflower. Increasing plants population reduced yield components and yield of individual plants, but increased yield per unit area. Low plant density resulted in significantly higher branches/plant, heads/plant, seeds/head. The highest seed yields per hektare were obtained with sowing safflower cultivars at 5 cm intra-row spacing in 45 cm spaced rows in 2011, and in 30 cm spaced rows in 2012. Our results indicated that higher plant density can be advantageous under yield limiting conditions while sowing winter safflower at 45 x 5 cm inter- and intra-row spacing can be recommended for regular seasons in Mediterranean-Type Environments.

Keyword: Carthamus tinctorius, cultivar, oil content, plant density, seed 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