The Use ofAspergillus Niger(M)* for the Determination of Magnesium, Zinc, Copper and Molybdenum Available in Soils to Crop Plants

Conn, H. J. (1928).Bacterium, globiformeand soil fertility levels. N.Y. Agric. Exp. Sta. Tech. Bull., 138.

Goodwin, W.–unpublished data.

Hewitt, E. J., Jones, E. W., andNicholas, D. J. D. (1947). The production of molybdenum deficiency in plants in sand culture with special reference to brassica and tomato crops. Rep. agric. hort. Res. Sta., Long Ashton, 70.

Lorenz, W. (1940). Improvements relating to production of organic acids by fermentation. Brit. Patent, 517, 793.

Mezzadroli, G. (1938). The procedure for the production of citric acid by fermentation of carbohydrates. French patent, 833.

Molisch, H. (1892). Die Pflanze in ihren Beziehungen zum Eisen, 97–117.

Nicholas, D.J.D., andFielding, A. H. (1947). The use ofAspergillus niger(M) in the bioassay of Mg, Cu, Zn and Mo in soils. Rep. agric. hort. Res. Sta., Long Ashton, 126–137.

Nicholas, D.J.D(1949). The use ofAspergillus nigerfor the determination of Mg, Cu, Zn and Mo available in soils to crop plants : Abstracts of Proceedings, ist International Congress of Biochemistry, Cambridge. Abstract No. 121/2, 302.

Russell, E. J. (1932). Soil conditions and Plant Growth. Sixth edition, London.

Waring, E. J., Wilson, R. D., and Shirlow, N. S. (1949). Whiptail of cauliflower. Agr. Gaz. N.S.W. Misc. Publ. 3354.