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A. Balla Kovács University of Debrecen Centre for Agricultural and Applied Economic Sciences H-4032 Debrecen 138 Böszörményi Str. Hungary

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An incubation experiment was set up to investigate the effects of NPK fertilizers, wheat straw and food waste compost in combination with Phylazonit MC biofertilizer on the changes in 0.01 M CaCl 2 extractable nitrogen forms (NO 3+ -N, NH 4+ -N, organic-N fraction) of three types of soils. The quantities and changes in CaCl 2 -NH 4+ -N mainly depended on the adsorption capacity of soils. Higher CaCl 2 extractable NH 4+ -N values were measured in the calcareous chernozem and sandy soil with the application of NPK treatment, while in case of the chernozem soil with loamy texture no significant differences were found between the NPK and control treatments. NH 4+ immobilization appeared in pots given straw treatment. The quantity of CaCl 2 -NH 4+ -N changed within the incubation period, the direction and extent of the change were dependent of the production rates and consumption processes. In all soils the 0.01 M CaCl 2 extractable NO 3- -N was the largest pool for plant nutrition. The highest CaCl 2 -NO 3- -N values were found in pots given NPK and combined NPK+straw treatments, while the lowest values were measured in straw-treated pots. Wheat straw, with higher C/N ratio caused a temporary immobilization, followed by remineralization. Food waste compost, with lower C/N ratio, proved to have a good N supplying capacity. The contrasted effect of straw and compost was more conspicuous in sandy soil, in which the original NO 3- -N content was the lowest. Higher CaCl 2 -organic N values were measured for pots treated with straw and with compost, as compared to the control. During the incubation period the amount of soluble organic-N changed, the direction and extent of the change depended on the soil type and treatments. The effect of Phylazonit MC was on the quantity of CaCl 2 extractable N fractions was not really expressed, and the significancy of the effect varied and was dependent of the soil type. Biofertilizer amendment increased the extractable NO 3- -N in sandy soil, decreased the negative effect of wheat straw, and it also might help in decomposing wheat straw and food waste compost. The application of Phylazonit MC in the calcareous chernozem caused a significantly higher amount of organic-N, especially in straw-treated pots.

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Senior editors

Editor(s)-in-Chief: Szili-Kovács, Tibor

Technical Editor(s): Vass, Csaba

Section Editors

  • Filep, Tibor (Csillagászati és Földtudományi Központ, Földrajztudományi Intézet, Budapest) - soil chemistry, soil pollution
  • Makó, András (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest) - soil physics
  • Pásztor, László (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest) - soil mapping, spatial and spectral modelling
  • Ragályi, Péter (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest) - agrochemistry and plant nutrition
  • Rajkai, Kálmán (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest) - soil water flow modelling
  • Szili-Kovács Tibor (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest) - soil biology and biochemistry

Editorial Board

  • Bidló, András (Soproni Egyetem, Erdőmérnöki Kar, Környezet- és Földtudományi Intézet, Sopron)
  • Blaskó, Lajos (Debreceni Egyetem, Agrár Kutatóintézetek és Tangazdaság, Karcagi Kutatóintézet, Karcag)
  • Buzás, István (Magyar Agrár- és Élettudományi Egyetem, Georgikon Campus, Keszthely)
  • Dobos, Endre (Miskolci Egyetem, Természetföldrajz-Környezettan Tanszék, Miskolc)
  • Fodor, Nándor (Agrártudományi Kutatóközpont, Mezőgazdasági Intézet, Martonvásár)
  • Győri, Zoltán (Debreceni Egyetem, Mezőgazdaság-, Élelmiszertudományi és Környezetgazdálkodási Kar, Debrecen)
  • Imréné Takács Tünde (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest)
  • Jolánkai, Márton (Magyar Agrár- és Élettudományi Egyetem, Növénytermesztési-tudományok Intézet, Gödöllő)
  • Kátai, János (Debreceni Egyetem, Mezőgazdaság-, Élelmiszertudományi és Környezetgazdálkodási Kar, Debrecen)
  • Lehoczky, Éva (Magyar Agrár- és Élettudományi Egyetem, Környezettudományi Intézet, Gödöllő)
  • Michéli, Erika (Magyar Agrár- és Élettudományi Egyetem, Környezettudományi Intézet, Gödöllő)
  • Rékási, Márk (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest)
  • Schmidt, Rezső (Széchenyi István Egyetem, Mezőgazdaság- és Élelmiszertudományi Kar, Mosonmagyaróvár)
  • Tamás, János (Debreceni Egyetem, Mezőgazdaság-, Élelmiszertudományi és Környezetgazdálkodási Kar, Debrecen)
  • Tóth, Gergely (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest)
  • Tóth, Tibor (Agrártudományi Kutatóközpont, Talajtani Intézet, Budapest)
  • Tóth, Zoltán (Magyar Agrár- és Élettudományi Egyetem, Georgikon Campus, Keszthely)

International Editorial Board

  • Blum, Winfried E. H. (Institute for Soil Research, University of Natural Resources and Life Sciences (BOKU), Wien, Austria)
  • Hofman, Georges (Department of Soil Management, Ghent University, Gent, Belgium)
  • Horn, Rainer (Institute of Plant Nutrition and Soil Science, Christian Albrechts University, Kiel, Germany)
  • Inubushi, Kazuyuki (Graduate School of Horticulture, Chiba University, Japan)
  • Kätterer, Thomas (Swedish University of Agricultural Sciences (SLU), Sweden)
  • Lichner, Ljubomir (Institute of Hydrology, Slovak Academy of Sciences, Bratislava, Slovak Republic)
  • Nemes, Attila (Norwegian Institute of Bioeconomy Research, Ås, Norway)
  • Pachepsky, Yakov (Environmental Microbial and Food Safety Lab USDA, Beltsville, MD, USA)
  • Simota, Catalin Cristian (The Academy of Agricultural and Forestry Sciences, Bucharest, Romania)
  • Stolte, Jannes (Norwegian Institute of Bioeconomy Research, Ås, Norway)
  • Wendroth, Ole (Department of Plant and Soil Sciences, College of Agriculture, Food and Environment, University of Kentucky, USA)

Szili-Kovács, Tibor
ATK Talajtani Intézet
Herman Ottó út 15., H-1022 Budapest, Hungary
Phone: (+36 1) 212 2265
Fax: (+36 1) 485 5217
E-mail: editorial.agrokemia@atk.hu

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Agrokémia és Talajtan
Language Hungarian, English
Size B5
Year of
Foundation
1951
Volumes
per Year
1
Issues
per Year
2
Founder Magyar Tudományos Akadémia  
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Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
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Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0002-1873 (Print)
ISSN 1588-2713 (Online)

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