References
- Byford , W. J. and Stamps , D. J. 1975 . Aphanomyces cochlioides in England . Trans. Br. Mycol. Soc. , 65 : 157 – 158 .
- McKeen , W. E. 1949 . A study of sugar beet rootrot in Southern Ontario . Can. J. Res. C , 27 : 284 – 311 .
- Mitchell , D. J. 1979 . Relationships of inoculum levels of several soilborne species of Phytophthora and Pythium to infections of several hosts . Phytopathology , 68 : 1754 – 1759 .
- Ontario Ministry of Agriculture and Food . 1977 . Agricultural statistics for Ontario Toronto, Ont. Publ. 20
- Schmitthenner , A. F. 1964 . Prevalence and virulence of Phytophthora. Aphanomyces. Pyihium, Rhizoctonia, and Fusarium isolated from diseased alfalfa seedlings . Phytopathology , 54 : 1012 – 1018 .
- Scott , W. W. 1961 . A monograph of the genus Aphanomyces , Tech. Bulletin 151 Blacksburg, Virginia : Virginia Agric. Exp. Stn. .
- Zar , J. H. 1974 . Biostatistical analysis , 151 Englewood Cliffs, N.F. : Prentice-Hall Inc. .