Turkish Journal of Field Crops


90 232 311 26 79




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


Muhammad YOUNIS, Sadam HUSSAIN, Ghadeer M. ALBADRANI, Khairiah ALWUTAYD, Jinjin WANG, Shaista JABEEN, Safdar ALI, Ilkay YAVAS5, Saddam HUSSAIN


Optimal nitrogen (N) application rate, source and timing are important to achieve high wheat yield. Overdose of N as basal dose promotes excessive vegetative growth and delays maturity, resulting in low N use efficiency (NUE) and crop yield. The current study was conducted for two years (2018-2019 and 2019-2020) to examine the influence of various N sources viz., common-urea, Zn-coated urea, neem-coated urea, and polymer-coated urea and their application methods (basal- and split-application) on the growth, physiology, yield, and related traits in wheat under semi-arid conditions. Results showed that N sources and application methods significantly affected the growth, physiological and yield-related traits; neem-coated urea applied in splits remained the most effective source for the observed traits, followed by Zn-coated, polymer-coated, and common urea. Compared with common urea, neem-coated urea significantly increased chlorophyll (Chl) and carotenoid contents under basal and split application. Neem-coated urea also recorded higher biological and grain yields than other treatments which were associated with higher values of yield-related traits including the number of productive tillers, number of spikelets, and number of grains per spike. For N application methods, split application significantly improved the plant height, Chl pigments, yield- and yield-related traits compared with the basal application. In conclusion, neem-coated urea application as a split application performed well followed by Zn[1]coated and polymer-coated urea in improving the growth and overall yield.

Keyword: Basal application, neem-coating, nitrogen, split application, urea, wheat ,

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


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