Skip to main content
SpringerLink
Log in

Availability of fixed NH4 + to crops

I. Native fixed form

  • Published:
Plant and Soil Aims and scope Submit manuscript

Summary

Significantly lower amounts of exchaneable NH4, soluble NO3 and clay-fixed NH4 forms of N were observed in the unfertilized fields with high rather than low-density cropped plots. Irrespective of planting densitites, the fixed NH4 content in soil increased with increase in the period of crop growth. N uptake by plant and total bacterial population of rhizosphere soil were significantly higher in the plots with the high than with the low-density planting. Availability of native fixed NH4 + to crops and biological utilization of a considerable amount of recently mineralized NH4 + in fixed form is indicated.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Black A S and Waring S A 1972 Ammonium fixation and availability in some cereal producing soil in Queensland. Aust. J. Soil Res. 10, 197–207.

    Article  Google Scholar 

  2. Bremner J M and Keeney D R 1966 Determination of exchangeable ammonium, nitrate and nitrite by extraction distillation methods. Soil Sci. Soc. Am. Proc. 50, 577–587.

    Google Scholar 

  3. Jackson M L 1973 Soil Chemical Analysis. Prentice Hall of India Pvt. Ltd. New Delhi.

    Google Scholar 

  4. Kowalenko C G and Cameron D R 1978 Nitrogen, transormation in soil-plant system in three years of field experiments using tracer and non-tracer methods on an ammonium fixing soil. Can. J. Soil Sci. 58, 195–208.

    CAS  Google Scholar 

  5. Martin A E, Gilkes R J and Skjemstad J O 1970 Fixed ammonium in soils developed on some Queensland phyllites and its relation to weathering. Aust. J. Soil Res. 8, 71–80

    Article  CAS  Google Scholar 

  6. Mohammed I H 1979 Fixed ammonium in Libyan Soils and its availability to crops. Plant and Soil. 53, 1–9.

    Article  CAS  Google Scholar 

  7. Nommik H 1957 Fixation and defixation of ammonium in soils. Acta Agric. Scand. 7, 395–436.

    CAS  Google Scholar 

  8. Osborne G J 1976 The significance of intercalary ammonium in representative surface and sub soils from Southern New South Wales. Aust. J. Soil Res. 14, 381–388.

    CAS  Google Scholar 

  9. Silva, J A and Bremner J M 1966 Determination and Isotope Ratio Analysis of different forms of nitrogen in soils. 5. Fixed ammonium. Soil Sci. Soc. Am. Proc. 30, 83–93.

    Google Scholar 

  10. Van Vuurde J W L and Lange A de 1978 The rhizosphere of wheat grown under controlled conditions. II. Influence of the stage of growth of the plant, soil fertility and treatment with urea with rhizosphere soil microflora. Plant and Soil 50, 461–472.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Agricultural Chemistry and Soil Science Department, Faculty of Agriculture, Bidhan Chandra Krishi Viswa Vidyalaya, Kalyani, India

    Dipankar Saha, R. Mukherjee & Asit K. Mukhopadhyay

Authors
  1. Dipankar Saha
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. R. Mukherjee
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Asit K. Mukhopadhyay
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Saha, D., Mukherjee, R. & Mukhopadhyay, A.K. Availability of fixed NH4 + to crops. Plant Soil 65, 345–349 (1982). https://doi.org/10.1007/BF02375055

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02375055

Key words

Search

Navigation