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.

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Kruczek A. 2000. IMPACT OF VARIED SOIL NITROGEN RICHNESS ON THE EFFECTIVENESS OF CORN FERTILISATION WITH NITROGEN, EJPAU 3(2), #03.
Available Online: http://www.ejpau.media.pl/volume3/issue2/agronomy/abs-03.html

ABSTRACT

The research defined the effectiveness of corn fertilisation with nitrogen depending on its content in soil and covered N uptake, agronomical and physiological fertilisation efficiency as well as coefficients of nitrogen-fertliser utilisation. Spring and autumn doses were defined which were applied to balance N fertilisation and uptake by plants as well as the degree of N utilisation from the same doses applied in autumn and spring. As for the plant dry matter yield, the agronomical and physiological efficiency of all the spring N doses at 160 and 240 kg×ha^-1 introduced into the soil in autumn were negative, and the coefficient of nitrogen utilisation against other fertilisers did not exceed 7.4%.

Key words: corn, nitrogen fertilisation, nitrogen fertilisation efficiency, autumn doses, spring doses.

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