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Eissa, F., Fathi, M., El-Shall, S. (2007). THE HUMIC ACID AND ROOTSTOCK IN ENHANCING SALT TOLERANCE OF ‘ANNA’ APPLE SEEDLINGS. Journal of Plant Production, 32(5), 3667-3682. doi: 10.21608/jpp.2007.208154
Fawzia M. Eissa; M. A. Fathi; S. A. El-Shall. "THE HUMIC ACID AND ROOTSTOCK IN ENHANCING SALT TOLERANCE OF ‘ANNA’ APPLE SEEDLINGS". Journal of Plant Production, 32, 5, 2007, 3667-3682. doi: 10.21608/jpp.2007.208154
Eissa, F., Fathi, M., El-Shall, S. (2007). 'THE HUMIC ACID AND ROOTSTOCK IN ENHANCING SALT TOLERANCE OF ‘ANNA’ APPLE SEEDLINGS', Journal of Plant Production, 32(5), pp. 3667-3682. doi: 10.21608/jpp.2007.208154
Eissa, F., Fathi, M., El-Shall, S. THE HUMIC ACID AND ROOTSTOCK IN ENHANCING SALT TOLERANCE OF ‘ANNA’ APPLE SEEDLINGS. Journal of Plant Production, 2007; 32(5): 3667-3682. doi: 10.21608/jpp.2007.208154

THE HUMIC ACID AND ROOTSTOCK IN ENHANCING SALT TOLERANCE OF ‘ANNA’ APPLE SEEDLINGS

Article 21, Volume 32, Issue 5, May 2007, Page 3667-3682  XML PDF (992.68 K)
Document Type: Original Article
DOI: 10.21608/jpp.2007.208154
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Authors
Fawzia M. Eissa; M. A. Fathi; S. A. El-Shall
Hort. Res. Inst., Agric. Res. Center, Giza, Egypt
Abstract
            ‘Anna’ apple plants (Malus domestica Borkh) budded on M. communis or MM106 rootstocks were observed under 0, 1000, and 2000 ppm saline irrigation water that contained equal parts of NaCl, CaCl2, MgSO4 and NaHCO3 salts. Also, the effect of humic acid treatments (soil, foliar, and soil + foliar application) on the growth parameters (shoot length, number of leaves, leaf area and leaf chlorophyll content), nutritional status (percentage of leaf dry matter and NPK content), root system growth (root length, number of roots, and dry matter of main and secondary roots), toxic ions (chloride and sodium leaf content), and proline amino acid was studied. Salinity treatments significantly decreased growth parameters, nutritional status and root system growth, and in the contrary, they increased toxic ions and proline amino acid content. M. communis rootstock tolerated salinity more than MM106 stock, since ‘Anna’ apple plants on M. communis grew better under different salinity doses than on MM106 roots. Moreover, humic acid application (especially soil treatment with 20 ml Actosol in 1 L of water per 35-cm-pot every other week from late June to Oct.15th) markedly minimized the harmful effect of salinity and enhanced apple salt tolerance.
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