HISTORICAL INTRODUCTION 19 



Copper 



Brassica oleracea (cabbage) Russell and Manns, 1933 



Linum usitatissimum (flax) Sommer, 1931; Lipman and Mackinney, 



1931 

 Pyrus Mains (apple) Anderssen, 1932 

 P. communis (pear) Anderssen, 1932 

 Prunus domestica (plum) Anderssen, 1932 

 P. Persica (peach) Anderssen, 1932 

 P. Armeniaca (apricot) Anderssen, 1932 

 Trifolium subterraneum (subterranean clover) Piper, 1942 

 Medicago sativa (lucerne) Piper, 1942 

 Pisum sativum (garden pea) Piper, 1942 

 Vicia Faba (broad bean) Russell and Manns, 1933 

 Glycine hispida (soya bean) Russell and Manns, 1933 

 Ipomoea Batatas (sweet potato) Russell and Manns, 1933 

 Solarium tuberosum (potato) Russell and Manns, 1933 

 Lycopersicum esculentum (tomato) Skinner and Ruprecht, 1930 

 Helianthus annuus (sunflower) Sommer, 1931 

 Zea mais (maize) Russell and Manns, 1933 

 Saccharum officinale (sugar cane) Allison, 1930 

 Oryza sativa (rice) Harrison and Subrahmanya Azya, 1917 

 Phalaris tuberosa (a canary grass) Piper, 1942 

 A vena sativa (oat) McHargue and Shedd, 1930 

 Triticum vulgare (wheat) Russell and Manns, 1933 

 Hordeum distichum (barley) Lipman and Mackinney. 1931 

 Lolium subulatum (Wimmera rye-grass) Piper, 1942 



Rhizopus nigricans McHargue and Calfee, 1931 



Aspergillus niger Bortels, 1927 



A. fumigatus Roberg, 1928 



A. oryzae Roberg, 1928 



A. ficuum Roberg, 1928 



A. cinnamomeus Roberg, 1928 



A. fuscus Roberg, 1928 



A.flavus McHargue and Calfee, 1931 



Ceratostomella Ulmi Ledeboer, 1934 



Trichophyton interdigitale Mosher, Saunders, Kingerv and Williams, 



1936 

 Phymatotrichum omnivorum Rogers, 1938 



Bacillus fluoresceins Russell and Manns, 1933 



Columbium 



Penicillium Javanicum Lockwood, 1933 



Molybdenum 



Prunus cerasifolia (myrobalan plum) Hoagland, 1941 

 Lycopersicum esculentum (tomato) Arnon and Stout, 1939 



