Total nitrogen and exchangeable ammonium in the soils with rice, barley and wheat

Sijakova-Ivanova, Tena and Zajkova-Paneva, Vesna (2004) Total nitrogen and exchangeable ammonium in the soils with rice, barley and wheat. 1st International workshop anthropogenic effects on the human environment in the tertiary basins in the Mediterranean. p. 62.

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TOTAI, NITROGEN AND EXCHANGEABLE AMMONIUM IN THE SOILS WIT'H RICE, BARLEY AND WHEAT.pdf

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Abstract

The paper presents data on the presence of total nitrogen and exchangeable ammonium in the soils with rice, barley and wheat crops. Nitrogen is the most deficient element and the most limiting factor for crop production. Following methods were used to determine the contents of total N and exchangeable NH±N. Total N content: Regular Kjeldahl method (Bremner and Mulvaney 1982). Exchangeable NH±N content. The method involves equilibrium extraction of soil sample with 0.1M KCl, and successiveness spectrophotometry order with Nessler's reagents. Examination was carried out in the laboratory of the Faculty of Mining and Geology in Stip. Key words: nitrogen, ammonium, rice, barley, wheat, soil, spectrophotometry.

Item Type: Article
Subjects: Natural sciences > Other natural sciences
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Tena Sijakova Ivanova
Date Deposited: 02 Sep 2019 10:52
Last Modified: 02 Sep 2019 10:52
URI: http://eprints.ugd.edu.mk/id/eprint/22358

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