Turkish Journal of Field Crops

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CHANGES IN FATTY ACID AND PROTEIN OF SAFFLOWER AS RESPONSE TO BIOFERTILIZERS AND CROPPING SYSTEM

Mahmoodreza SAEIDI, Yaghoub RAEI, Rouhollah AMINI, Akbar TAGHIZADEH, Bahman PASBAN-ESLAM

Abstract

Intercropping and biofertilizer are thought to be strategies for reducing the risks of agricultural production and enhancing yield and quality in developing sustainable agriculture. Hence, two field experiments were carried out with factorial arrangement based on a randomized complete block design with three replications, to evaluate the effects of fertility and cropping systems on quality of safflower in 2015 and 2016. Treatments included nutrient levels (100% chemical fertilizers, 60% and 30% chemical + biological fertilizers and no fertilizer) and safflower and faba bean sole cropping, intercropping systems of them with ratios of 1:1 and 2:1. Results revealed that the integrated use of chemical and biofertilizers in intercropped plants caused to increasing yield components of safflower for both years. The highest unsaturated fatty acids, protein and oil content were achieved in 60% chemical plus biofertilizers. Also, between intercropping systems, ratio of 1:1 and the combinative application of chemical and biofertilizers had the highest land equivalent ratio. Values of actual yield loss showed an advantage of 20 to 98 % from intercropping due to recovery made by intercrops. Therefore, it was concluded that intercropping (safflower / faba bean) with integrated use of the reduced chemical and biological fertilizers, improved growth and quality of safflower.

Keyword: Biofertilizer, fatty acid composition, intercropping, land equivalent ratio, protein content ,

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