Crop residue application increases nitrogen fixation and dry matter production in groundnut (Arachis hypogaea L.) grown on an acid sandy soil in Niger, West Africa

    Rebafka, F P and Ndunguru, B J and Marschner, H (1993) Crop residue application increases nitrogen fixation and dry matter production in groundnut (Arachis hypogaea L.) grown on an acid sandy soil in Niger, West Africa. Plant and Soil, 150 (2). pp. 213-222. ISSN 1573-5036

    [img]
    Preview
    		 PDF - Published Version
    Download (1MB) | Preview

    Abstract

    Field experiments were conducted during the rainy reasons of 1989, 1990 and 1991 on an acid sandy soil in Niger, West Africa, to assess the effect of millet straw application (+CR) on growth and N2 fixation of groundnut (Arachis hypogaea L.). Three years of +CR (4 t ha−1 yr−1) increased symbiotic N2 fixation, total dry matter production (haulm plus pods) by 83% and total nitrogen (N) accumulation by 100%. Concentration of N in the shoot dry matter and total N in the soil were only slightly affected by the +CR treatment. Crop residue application increased the concentration of potassium (K) and molybdenum (Mo) and decreased the concentrations of aluminium (Al) and manganese (Mn) distinctly, both in the plant (shoot and nodule dry matter) and in the soil. The increase in dry matter production and N uptake was mainly due to improved N2 fixation reflected by enhanced formation and growth of nodules as well as nitrogenase activity. This was attributed to improved chemical soil conditions, particularly to the higher availability of Mo and the lowered content of available Al and Mn. Although with the application of 4 t CR ha−1, 60 kg K were supplied, increased growth could not be attributed to the additional supply of K.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Groundnut
    Depositing User: Mr Charan Sai Ch
    Date Deposited: 21 Oct 2011 03:58
    Last Modified: 14 Sep 2013 12:30
    URI: http://oar.icrisat.org/id/eprint/3059
    Official URL: http://dx.doi.org/10.1007/BF00013018
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
    Links:
    View Statistics

    Actions (login required)

    View Item View Item
    OAR@ICRISAT is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.