LITERATURE CITED
- Bouyoucos, G. J. 1936. Direction for making mechanical analysis of soil by the hydrometer method. Soil Science 42: 225–228.
- Daniels, B. A., and S. D. Graham. 1976. Effects of nutrition and soil extracts on germination of Glomus mosseae spores. Mycologia 68: 108–116.
- Daniels, B. A., and S. D. Graham, and H. D. Skipper. 1982. Methods of recovery and quantitative estimation of propagules from soil. Pp. 29–35. In: Methods and principles of mycorrhizal research. Ed., N. C. Schcnck. American Phytopathological Society, St. Paul, Minnesota.
- Gerdemann, J. W., and T. H. Nicholson. 1963. Spores of mycorrhizal Endogone species extracted from soil by wet sieving and decanting. Trans. Brit. Mycol. Soc. 46: 235–244.