Inoculation with soil arbuscular mycorrhizal fungi and phosphate-solubilizing bacteria as a means for improving rock phosphate availability for Thompson seedless grape rootings [electronic resource].

Includes references.

This study was carried out to disclose the effect of inoculation with arbuscular mycorrhizal fungi and phosphate solubilizing bacteria on the soil fertilized with two rates of rock phosphate material (50 or 100 mg rock phosphate/kg soil) in an attempt improve vegetative growth, nutritional status and microbiological and enzyme activity in the rhizosphere of Thompson Seedless grape rootings through two successive seasons (2006 & 2007). The interaction between arbuscular mycorrhizal fungi and phosphate solubilizing bacteria at one hundred mg of rock phosphate fertilizer gave the best results where it was accompanied by improving vegetative growth: shoot length, shoot diameter, number of leaves/rooting, leaf area, coefficient of wood ripening, shoot and root biomass, total biomass and root/shoot ratio. Total chlorophyll and percentages of total nitrogen, phosphorus and potassium of the leaves and total carbohydrates of shoots were substantially increased. Conceming the microbiological and enzyme activity in the rhizosphere of Thompson Seedless grape rootings, it was noticed that the percentage of infection of AM-micorrhizae, spore numbers of AM-micorrhizae, total count of phosphate solubilizing bacteria, populations of total microorganism. dehydrogenase and phosphatase enzyme activity in the rhizosphere were also increased.

Summary in Arabic.

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