• Asai, T. (1944). Über die Mykorrhizenbildung der Leguminosen Pflanzen. Japanese Journal of Botany, 13, 463.
  • Black, R. L. B. & Tinker, P. B. (1977). Interaction between effects of vesicular-arbuscular mycorrhiza and fertilizer phosphorus on yields of potatoes in the field. Nature, 267, 510.
  • Bremner, J. M. (1960). Determinations of nitrogen in soil by Kjeldahl method. Journal of Agricultural Science, 55, 11.
  • Daft, M. J. & El-Giahmi, A. A. (1976). Studies on nodulated and mycorrhizal peanuts. Annals of applied Biology, 83, 273.
  • Demeterio, J. L., Ellis, R. Jr & Paulsen, G. M. (1972). Nodulation and nitrogen fixation by two soybean varieties as affected by phosphorus and zinc nutrition. Agronomy Journal, 64, 566.
  • Gerdemann, J. W. (1975). Vesicular-arbuscular mycorrhizae In: Development and Function of Roots (Ed. by J. G.Torrey & D. T.Clarkson), pp. 575591. Academic Press, London , New York .
  • Gerdemann, J. W. & Nicolson, T. H. (1963). Spores of mycorrhizal Endogone species extracted from soil by wet sieving and decanting. Transactions of the British Mycological Society, 46, 235.
  • Hardy, R. W. F., Holsten, R. D., Jackson, E. K. & Burns, R. C. (1968). The acetylene-ethylene assay for N2 fixation: laboratory and field evaluation. Plant Physiology, 43, 1185.
  • Jackson, M. L. (1967). Soil Chemical Analysis. Prentice Hall, New Delhi .
  • Jackson, N. E., Eranklin, R. E. & Miller, R. H. (1972). Effects of vesicular–arbuscular mycorrhizae on growth and phosphorus content of three agronomic crops. Proceedings of the Soil Science Society of America, 36, 64.
  • Khan, A. G. (1975). Growth effects of VA mycorrhiza on crops in the field. In: Endomycorrhizas (Ed. by F. E.Sanders, B.Mosse & P. B.Tinker), pp. 419435. Academic Press, London , New York .
  • Nicolson, T. H. (1960). Mycorrhiza in the Gramineae. II. Development in different habitats, particularly sand dunes. Transactions of the British Mycological Society, 43, 132.
  • Mosse, B. (1977a). Plant growth responses to vesicular-arbuscular mycorrhiza. X. Responses of Stylosanthes and maize to inoculation in unsterile soils. Netv Phytologist, 78, 277.
  • Mosse, B. (1977b). The role of mycorrhiza in legume nutrition on marginal soils. In: Exploiting the Legume–Rhizobium Symbiosis in Tropical Agriculture (Ed. by J. M.Vineent, A. S.Whitney & J.Bose), pp. 275292. College of Tropical Agriculture, University of Hawaii, U.S.A., Miscellaneous Publications, no. 145.
  • Phillips, J. M. & Hayman, D. S. (1970). Improved procedures for clearing roots and staining parasitic and vesicular-arbuscular mycorrhizal fungi for rapid assessment for infection. Transactions of the British Mycological Society, 55, 158.
  • Ross, J. P. & Harper, J. A. (1970). Effect of Endogone mycorrhiza on soybean yields. Phytopathology 60, 1552.
  • Schenck, N. C., Kinloch, R. A. & Dickson, D. W. (1975). Interaction of endomycorrhizal fungi and root-knot nematode on soybean In: Endomycorrhizas (Ed. by F. E.Sunders, B.Mosse & P. B.Tinker), pp. 607617. Academic Press, London , New York .