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Synergistic effects of vesicular-arbuscular-mycorrhizas and Azotobacter chroococcum on the growth and the nutrient contents of tomato plants

, : Synergistic effects of vesicular-arbuscular-mycorrhizas and Azotobacter chroococcum on the growth and the nutrient contents of tomato plants. Phyton Horn 29(2): 203-212

Luxor tomatoes were grown in sterilized sandy soil, low in plant-available N and P. The soil was inoculated or uninoculated with Glomus fasciculatum, Azotobacter chroococcum, or both. Inoculation of tomato with A. chroococcum enhanced root infection by G. fasciculatum, stimulated the plant growth and resulted in increased shoot-N, -Ca, -Mg and -K compared with the other treatments and root-N, -P, -Na, -Ca and -Fe compared with uninoculated plants.

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Related references

El-Shanshoury, A.; Hassan, M.; Abdel-Ghaffar, B., 1989: Synergistic effect of vesicular-arbuscular mycorrhizas and Azotobacter chroococcum on the growth and the nutrient contents of tomato plants. Phyton: annales rei botanicae9(2): 203-212

Sanders, I.R.; Fitter, A.H., 1992: The ecology and functioning of vesicular arbuscular mycorrhizas in co existing grassland species ii. nutrient uptake and growth of vesicular arbuscular mycorrhizal plants in a semi natural grassland. Although vesicular-arbuscular mycorrhizas (VAM) are abundant in natural ecosystems, the evidence for the mutualistic effect of this association under field conditions is conflicting. VAM infection and inflow of phosphorus, copper, zinc and mangane...

Brown M.E.; Carr G.R., 1984: Interactions between azotobacter chroococcum and vesicular arbuscular mycorrhiza and their effects on plant growth. The effects of simultaneous inoculation of roots of lettuce seedlings with vesicular-arbuscular endophytes and A. chroococcum are described. Endophytes alone increased yields of lettuce grown in partially sterilized P-deficient soil, but not in th...

Bagyaraj, D.J.; Menge, J.A., 1978: Interaction between a vesicular arbuscular mycorrhiza and azotobacter chroococcum and their effects on rhizosphere micro flora and plant growth. Larger populations of bacteria and actinomycetes were recovered from the rhizospheres of tomato plants inoculated with the mycorrhizal fungus Glomus fasciculatus and A. chroococcum, either individually or together, than from those of non-inoculate...

Baath, E.; Hayman, D.S., 1983: Plant growth responses to vesicular-arbuscular mycorrhizas XIV. Interactions with Verticillium wilt on tomato plants. The effect of pre-inoculation with VAM (Glomus mosseae and G. caledonium) on V. wilt was assessed in a glasshouse trial. Inoculation with V. albo-atrum decreased plant growth compared with non-inoculated controls, irrespective of mycorrhizal statu...

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Ischac, Y.Z.; Mostafa, M.I., 1998: Interaction of Azotobacter and vesicular arbuscular mycorrhizas. Vesicular arbuscular mycorrhizas (VAM) are ubiquitous inhabitants of plant root systems, and responses to VAM infection are mainly due to altered plant physiological processes. These physiological changes are known to induce a potentially differen...

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Gildon, A.; Tinker, P.B., 1983: Interactions of vesicular-arbuscular mycorrhizal infection and heavy metals in plants. I. The effects of heavy metals on the development of vesicular-arbuscular mycorrhizas. The degree of infection of onions with Glomus mosseae was reduced by adding Zn, Cu, Ni or Cd to the soil. High rates of Zn (75 mu g/g) and Ni (25 mu g/g) eliminated infection and greatly reduced dry weight. A split pot experiment with maize showed...

Tinker, P.B., 1975: Effects of vesicular-arbuscular mycorrhizas on higher plants. Symposia of the Society for Experimental Biology: 325-349