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Effect of different doses of nitrogen fertilizer on yield and yield concentration of two-rowed barley cultivars

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2008-04-01

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Asian Journal of Chemistry

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Abstract

The research was conducted in the experimental field of Department of Field Crops, Faculty of Agriculture, Uludag University, Bursa, Turkey. Totally ten cultivars were examined for two years (Angora, Caminant, Goldie, Viva, Jubilant, Compact, Orbit, Kaya, Sladoran and Balkan-96). The experiment area was established in a randomized design with three replicates having 500 spikes m(-2) on 1.2 x 5 m = 6 m(2). Pure nitrogen dose (33 % NH4NO3-) was applied 0 kg N da(-1) (N-0), 5 kg N da(-1) (N-5), 10 kg N da(-1) (N-10), 15 kg N da(-1) (N-15) and 20 kg N da(-1) (N-20) to each cultivar. It was found that grain number per spike and yield of cultivars increased until N-10, 1000-grain weight of the cultivars increased until N-15 application but following the application of N-20, there was a decrease in the above-mentioned characteristics. However, increasing nitrogen doses increased plant heights up to N-20 doses including N-20 but it was observed that plant logging occurred in some cultivar. It was determined that there was a negative correlation between yield and plant height and a positive correlation between yield-and grain number per spike.

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Genetic-variability, Chlorophyll meter, N fertilization, Grain, Growth, Components, Quality, Tillage, Barley, Nitrogen fertilizer, Plant height, 1000 grain weight, Chemistry

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