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.
2006
Volume 9
Issue 4
Topic:
Agronomy
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Szczepanek M. 2006. STABILITY OF PERENNIAL RYEGRASS (Lolium perenne L.) PLANTS CULTIVATED FOR SEEDS AT VARIED LEVELS OF NITROGEN FERTILIZATION, EJPAU 9(4), #56.
Available Online: http://www.ejpau.media.pl/volume9/issue4/abs-56.html

STABILITY OF PERENNIAL RYEGRASS (LOLIUM PERENNE L.) PLANTS CULTIVATED FOR SEEDS AT VARIED LEVELS OF NITROGEN FERTILIZATION

Ma│gorzata Szczepanek
Department of Plant Cultivation, University of Technology and Life Sciences in Bydgoszcz, Poland

 

ABSTRACT



The effect of different doses of nitrogen fertilization on the usefulness of perennial ryegrass (Lolium perenne L.) cultivated for seeds for long-term use was studied in a field experiment. A negative correlation of seed yield and the length of use was found. The strongest reduction in seed yielding occurred in the fourth year, which mainly resulted from a decrease in the number of generative tillers and the number of seeds per spike. In the first and second year of full use, nitrogen fertilization in a dose of 60 kg·ha-1 was sufficient. In the third year, increasing the dose by 30 kg N·ha-1 prevented a decrease in perennial ryegrass plant productivity, but it did not prevent the yield reduction in the fourth year after sowing. Germination energy and germinability was the lowest in the third year of cultivation; a level of nitrogen fertilization did not affect the seed sowing value.

Key words: perennial ryegrass, seed yield, nitrogen fertilization, years of full use.


Ma│gorzata Szczepanek
Department of Plant Cultivation,
University of Technology and Life Sciences in Bydgoszcz, Poland
Kordeckiego 20, 85-225 Bydgoszcz, Poland
email: Malgorzata.Szczepanek@utp.edu.pl

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