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
Helios W. , Kotecki A. 2006. EFFECT OF N FERTILIZATION AND THE HARVEST DATE ON THE ACCUMULATION OF DRY WEIGHT, ORGANIC AND MINERAL NUTRIENTS IN PLANTS OF SELECTED PEA CULTIVARS, EJPAU 9(4), #14.
Available Online: http://www.ejpau.media.pl/volume9/issue4/abs-14.html

EFFECT OF N FERTILIZATION AND THE HARVEST DATE ON THE ACCUMULATION OF DRY WEIGHT, ORGANIC AND MINERAL NUTRIENTS IN PLANTS OF SELECTED PEA CULTIVARS

Waldemar Helios1, Andrzej Kotecki2
1 Department of Plant Cultivation, University of Agriculture in Wroc³aw, Poland
2 Department of Plant Cultivation, Wroc³aw University of Environmental and Life Sciences, Poland

 

ABSTRACT



In 2000-2002 a field experiment carried out at the Paw³owice Agricultural Experiment Station, in the vicinity of Wroc³aw, investigated the effect of N fertilization and the date of harvest on the accumulation of nutrients in two pea morphotypes: Agra – leafless and traditional Rola cultivars. The dry weight accumulation in pea seeds, pod-shells and stems was determined by seed ripening, weather course and pea cultivar-specific factor, however it did not depend on the N fertilization. In the period from green to full maturity the plants demonstrated some changes: the share of seeds in seed yield increased, whereas the share of pod-shells and stems decreased; the content of total protein, fat, fiber and crude ash as well as P, K, Mg in seeds decreased and the share of NFE increased. In pod-shells and in stems the content of total protein, fat, NFE, P and the energy value decreased, while the content of fiber – increased. The share of seeds, pod-shells and stems in organic and mineral nutrients accumulation differed and dependent on the development phase and was cultivar-specific.

Key words: pea, dry weight, cultivar, organic and mineral nutrients, date of harvest, N fertilization.


Waldemar Helios
Department of Plant Cultivation,
University of Agriculture in Wroc³aw, Poland
C. K. Norwida 25, 50-375 Wroc³aw, Poland
email: helios@ekonom.ar.wroc.pl

Andrzej Kotecki
Department of Plant Cultivation,
Wroc³aw University of Environmental and Life Sciences, Poland
pl. Grunwaldzki 24a, 50-363 Wroc³aw
email: andrzej.kotecki@up.wroc.pl

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.