The Effect of Partial Sterilization by Steam and Formalin on the Numbers of Amoebae in Field Soil

References

1. Cutler D. W., Bal D. V. 1926; Influence of protozoa on the process of nitrogen fixation by Azotobacter chroococcum. Ann. appl. Biol 18:516
   [Google Scholar]
2. Cutler D. W., Crump L. M. 1929; Carbon dioxide production in sands and soils in the presence and absence of amoebae. Ann. appl. Biol 16:472
   [Google Scholar]
3. Fisher R. A., Yates F. 1947 Statistical Tables for Biological, Agricultural and Medical Research, 3rd ed. London: Oliver and Boyd;
   [Google Scholar]
4. Harvey R. J., Greaves J. E. 1941; Nitrogen fixation by Azotobacter chroococcum in the presence of soil protozoa. Soil Sci 51:85
   [Google Scholar]
5. Meiklejohn J. 1930; The relation between the numbers of a soil bacterium and the ammonia produced by it in peptone solutions; with some reference to the effect on this process of the presence of amoebae. Ann. appl. Biol 17:614
   [Google Scholar]
6. Meiklejohn J. 1932; The effect of Colpidium on ammonia production by soil bacteria. Ann. appl. Biol 19:584
   [Google Scholar]
7. Mollison J. E. 1953; The effect of partial sterilization and acidification of soil on the fungal population. Trans. Brit, mycol. Soc 36: in the Press
   [Google Scholar]
8. Nasir S. A. 1923; Some preliminary investigations on the relationship of Protozoa to soil fertility, with special reference to nitrogen fixation. Ann. appl. Biol 10:122
   [Google Scholar]
9. Russell E. J., Hutchinson H. B. 1909; The effect of partial sterilization of soil on the production of plant food. J. agric. Sci 3:111
   [Google Scholar]
10. Singh B. N. 1941; Selectivity in bacterial food by soil amoebae in pure mixed cultures and in sterilized soil. Ann. appl. Biol 28:52
    [Google Scholar]
11. Singh B. N. 1942; Selection of bacterial food by soil flagellates and amoebae. Ann. appl. Biol 29:18
    [Google Scholar]
12. Singh B. N. 1945; The selection of bacterial food by soil amoebae, and the toxic effects of bacterial pigments and other products on soil Protozoa. Brit. J. exp. Path 26:316
    [Google Scholar]
13. Singh B. N. 1946; A method of estimating the numbers of soil protozoa, especially amoebae, based on their differential feeding on bacteria. Ann. appl. Biol 33:112
    [Google Scholar]
14. Singh B. N. 1947a; Studies on soil Acrasieae. 1. Distribution of species of Dictyostelium in soils of Great Britain and the effect of bacteria on their development. J. gen. Microbiol 1:11
    [Google Scholar]
15. Singh B. N. 1947b; Studies on soil Acrasieae. 2. The active life of Dictyostelium in soil and the influence thereon of soil moisture and bacterial food. J. gen. Microbiol 1:361
    [Google Scholar]
16. Singh B. N. 1948; Studies on giant amoeboid organisms. 1. The distribution of Leptomyxa reticulata Goodey in soils of Great Britain and the effect of bacterial food on growth and cyst formation. J. gen. Microbiol 2:8
    [Google Scholar]
17. Singh B. N. 1949; The effect of artificial fertilizers and dung on the numbers of amoebae in Rothamsted soils. J. gen. Microbiol 3:204
    [Google Scholar]