Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Szmigiel A. , Oleksy A. , Kołodziejczyk M. 2014. EFFECT OF NITROGEN FERTILIZATION ON QUALITY AND QUANTITY IN SPRING WHEAT, EJPAU 17(2), #01.
Available Online: http://www.ejpau.media.pl/volume17/issue2/abs-01.html

ABSTRACT

The experiment was conducted in 2008–2010 on the experimental field
in Prusy near Krakow, a part of the Experimental Station of the Institute of
Crop Production of the University of Agriculture in Krakow. The aim of the research
was to compare the effect of diversified levels of nitrogen fertilization on
grain yield, its structure and protein content in grain in two spring wheat cultivars.
Diversified weather conditions during the period of investigations and the cultivar
factor influenced the level of spring wheat yielding ability. Nitrogen fertilization
caused a significant increase in grain yield to the dose of 90 kg N, at which
the greatest grain yield was observed. Bigger doses of 120 and 150 kg of nitrogen
did not cause any significant increase in the level of yield, on the contrary,
a declining tendency in yielding was observed. Among the grain yield components
only the number of ears per area unit remained under the influence of the weather
conditions. The number of grains per ear and 1000 grain weight, remained similar
as the number of ears depended on the cultivar. On the other hand, the level
of nitrogen fertilization affected the increase in ear density and 1000 grain
weight until the dose of 60 kg N∙ha^-1. It was concluded that protein content
in grain depends on the prevailing weather conditions, cultivar and nitrogen
fertilization levels. Among the compared cultivars, Bombona c.v. revealed a bigger
protein accumulation in grain, which yielded lower than Tybalt c.v. Applied nitrogen
doses caused increased protein content in grain within the range from 13.06 to
15.18% when the highest dose of 150 kg N∙ha^-1of nitrogen was applied.

Key words: yield, protein content, yield components, nitrogen, dose.

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Aleksander Szmigiel
Department of Plant Production,
Agricultural University of Cracow, Poland
Al. Mickiewicza 21, 31-120 Kraków, Poland
email: rkszur@ar.krakow.pl

Andrzej Oleksy
Institute of Plant Production, University of Agriculture in Krakow, Poland
Aleja Mickiewicza 21
31-120 Kraków
Poland
email: rroleksy@cyf-kr.edu.pl

Marek Kołodziejczyk
Department of Plant Production,
Agricultural University of Cracow, Poland
Al. Mickiewicza 21, 31-120 Kraków, Poland
email: mkolodziejczyk@ar.krakow.pl

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Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

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