1. Agnihotri, V. P., Effect of foliar spray of urea on the Aspergilli of the rhizosphere ofTriticum vulgare L. Plant and Soil20, 364–370 (1964).
2. Agnihothrudu, V., Incidence of fungistatic organisms in the rhizosphere of pigeon pea (Cajanus cajan) in relation to resistance and susceptibility to wilt caused byFusarium udum Butl. Naturwissenschaften42, 373 (1955).
3. Horst, R. K. and Herr, L. J., Effects of foliar urea treatment on numbers of actinomycetes antagonistic toFusarium roseum f.cerealis in the rhizosphere of corn seedlings. Phytopathology52, 423–427 (1962).
4. Johson, L. F., Curl, E. A., Bond, J. H. and Fribourg, H. A., Methods for studying soil Microflora-Plant Disease Relationships. Burgess Publishing Company, Minnesota 178 pp. (1959).
5. Kandaswamy, D. and Rangaswami, G., Changes in the rhizosphere microflora of sorghum due to foliar nutrient sprays. Indian J. Agr. Sci.34, 143–150 (1967).