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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10079

Title: Proto-Cooperation Effect of VA Mycorrhizal Fungi and Phosphate Dissolving Bacteria on Phosphatase Activity and Nutrient Uptake by Maize (Zea maize) Plants Grown in Calcareous Soil.
Authors: A. M. Heggo
F. N. Barakah
Issue Date: 1993
Publisher: Annals Agric.Sci.,Ain Shams Univ.,Cairo
Abstract: The influence of inoculation of calcareous soil with vesicular arbuscular mycorrhizal fungi (VAM) and/or phosphate dissolving bacteria (PDB) on Zea maize plants was studied in green house experiment. The effect was evaluated using inorganic phosphate fertilization with rock phosphate (RP) or superphosphate (SP). The plant growth, nutrient contents of shoot parts, phosphatase activities in plant and soil and P-solubilization in soil were determined as affected by previous treatments. Count of PDB in soil and VAM colonization in root system were also measured. Data showed that the plant growth and the total macro and micro nutrients contents in shoot parts were increased by microbial inoculation with either VAM or PDB under all experimental conditions. The highest values were found when the soil was inoculated with both inoculants and fertilized with inorganic phosphate fertilizer. Phosphatase activity increased in the soils inoculated with VAM or VAM+PDB, and decreased in uninoculated soils fertilized with either rock-phosphate (RP) or superphosphate (SP). On the other hand, significant decreases in phosphatase activity in plant roots were observed when the soil was inoculated with VAM or dual inoculants. Highest percentages of VAM colonization in Zea maize roots were found when the soil was fertilized with RP and inoculated with dual inoculants. Counts of PDB in the soil were also increased by bacterial inoculation and RP fertilization. Available P in the soil increased significantly over the control in soils received either of P-fertilizer and PDB inoculant alone or along with VAM.
URI: http://hdl.handle.net/123456789/10079
Appears in Collections:College of Foods And Agricultural Science

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