The relation between cation-ratio and host-resistance to certain downy mildew and root-knot diseases
Received: 17 June 1983 Revised: 15 March 1984 DOI:
Cite this article as: Bains, S.S., Jhooty, J.S. & Sharma, N.K. Plant Soil (1984) 81: 69. doi:10.1007/BF02206895 Summary
The (Ca+Mg)/K ratio was found to have a relationship with the resistance of various crops to downy mildew and root-knot diseases. Predisposing factors such as host nutrition, prior infection by other pathogens and plant age changed (Ca+Mg)/K ratio. (Ca+Mg)/K ratio calculated from the published data of other workers also exhibited this relationship. It appears to play a role in several host-pathogen systems.
Key words Cation-ratio Disease Nutrition Sclerophthora rayssiae var. zeae Pseudoperonospora cubensis Peronospora parasitica Meloidogyne incognita References
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© Martinus Nijhoff/Dr W. Junk Publishers 1984