Abstract
The counts ofAzotobacter, N-fixing clostridia, aerobic cellulose decomposing bacteria, spore formers and actinomycetes were not affected by examined irradiation doses. There were, however, indications of a disturbance in the balance between organisms as evidenced by the rapid increase of actinomycetes and sporeformers during incubation. The effects of various irradiation doses on organic matter decomposition, N-fixing capacity and nitrification power were negligible.
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References
Allen, O. N.:Experiments in soil bacteriology. Burgress Publishing Co., New York 1959.
Bernard, V. V., Geller, I. T.:Effect of gamma rays on some groups of the soil microflora. Agrobiol. 4: 610, 1962.
Davis, R. J., Sheldon, V. L., Averbach, S. I.:Lethal effects of gamma radiation upon segments of a natural populations. J. Bacteriol. 72: 505, 1956.
Hoskins, J. K.:The most probable numbers for evaluation of Coliaerogenes tests by fermentation tube method. Publ. Health Repts. 49: 393, 1934.
Ishae, Y. Z.:Influence of organic matter addition to soil on certain aspects of microbiological activities related to fertility. Ph. D. Thesis, Fac. Agric., Cairo University 1961.
Jackson, M. L.:Soil chemical analysis. Constable & Co., London 1958.
Jackson, N. E., John, C. C., Frederick, L. R., Pickeen, J. C.:Gamma irradiation and the microbial population of soils at two water contents. Soil Sci. Soc. Amer. Proc. 31: 491, 1967.
Kashkina, G. B., Abaturov, Yu. D.:Survival rate of soil microflora after exposure of the soil to gamma rays. Radiobiol. 7: 263, 1968.
McLaren, A. D., Luse, R. A., Skujins, J. J.:Sterilization of soil by irradiation and some further observations on soil enzyme activity. Soil Sci. Soc. Amer. Proc. 26: 371, 1962.
Monib, M. M., Zayed, M. N.:The effect of gamma radiation of some of the organism of soil. J. Appl. Bacteriol. 26: 35, 1963.
Musa, M. M., Monib, M. M.:The effect of gamma radiation on some micro-organisms. Report submitted to the Middle Eastern Regional Radioisotope Centre for the Arab Countries Dokki Cairo, 1969.
Popenoe, H., Eno, F.:The effect of gamma radiation on the availability of nitrogen and phosphorus in soil. Soil. Sci. Soc. Amer. Proc. 27: 299, 1963.
Stanovick, R., Giddens, J., McGreery, R.:Effect of ionizing radiation on soil micro-organisms. Soil Sci. 92: 183, 1961.
Stotzky, G., Mortensen, J. L.:Effect of gamma radiation on growth and metabolism of micro-organisms in an organic soil. Soil Sci. Soc. Amer. Proc. 23: 125, 1959.
Tarpley, W., Ilvasky, J., Manowitz, B., Horrigan R. V.:Radiation sterilization. I. The effect of high energy gamma radiation from kilocurie radioactive sources on bacteria. J. Bacteriol. 65: 305, 1953.
Topping, L. E.:The predominant micro-organisms in soil. I. Description and classification of the organisms. Zbl. Bakt. 97: 289, 1937.
Zelle, M. R., Hollaender, A.:Effects of radiation on bacteria. In: Radiation Biology, 2, McGraw-Hill Book Company Inc., New York, p. 365, 1955.
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Monib, M., Salam, M.A.A. & El-Hadidy, T.T. The cumulative effect of gamma irradiation on the microbial soil population and its activity. Folia Microbiol 16, 457–464 (1971). https://doi.org/10.1007/BF02872719
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DOI: https://doi.org/10.1007/BF02872719