Mar. ao, 1916 Relation of Green Manures to Failure of Seedlings 
1175 
SUMMARY 
(1) Green manures may seriously injure the germination of certain 
seeds. 
(2) This injury is brought about by the action of certain parasitic 
fungi. 
(3) In the first stages of decomposition of green clover, numerous 
fungi develop. Some of these fungi are very destructive to seedlings. 
(4) Oil seeds as a class are very easily damaged by fungi. Starchy 
seeds, on the contrary, are very resistant. 
(5) Cotton seed and soybeans are examples of seeds extremely sensitive 
to green manuring. The germination of flax, peanuts, hemp, mustard, 
and clover is reduced in the presence of decomposing plant tissue, but 
not to as great a degree as that of cottonseed or soybeans. The germina¬ 
tion of buckwheat, com, oats, and wheat is not affected by green manures. 
(6) The damage to oil seeds from green manures is confined largely to 
the first stages of decomposition. Experimental evidence shows that 
two weeks after green manure is added it does not cause any serious 
injury to the germination of oil seeds. 
(7) Small applications of calcium carbonate seemed to increase the 
injury to germination. 
(8) The rate of germination determines to a certain extent the degree 
of injury. Slow germination is marked by a high percentage of diseased 
seedlings. 
LITERATURE CITED 
(1) Atkinson, G. F. 
1892. Some diseases of cotton. Ala. Agr. Exp. Sta. Bui. 41, 65 p., 25 fig., 
1 pi. 
(2) Barre, H. W., and Auu,, W. B. 
1914. Hot water treatment for cotton anthracnose. In Science, n. s. v. 40, 
no. 1020, p. 109-110. 
(3) Bokorny, Thomas. 
1912. Einwirkung einiger basischer Stoffe auf Keimpflanzen, Vergleich mit 
der Wirkung auf Mikroorganismen. In Centbl. Bakt. [etc.], Abt. 2, 
Bd. 32, No. 20/25, p. 587-605. 
(4) - 
1913. Uber den Einfluss verschiedener Substanzen auf die Keimung der 
Pflanzensamen. Wachstumsforderung durch einige. I. Mitteilung. 
In Biochem. Ztschr., Bd. 50, Heft 1/2, p. 1-48. 
(5) BoivUSY, H. L. 
1901. Flax wilt and flax sick soil. N. Dak. Agr. Exp. Sta. Bui. 50, 60 p., 
illus. 
(6) Burri, Robert. 
1903. Die Bakterienvegetation auf der Oberflache normal entwickelter 
Pflanzen. In Centbl. Bakt. [etc.], Abt. 2, Bd. 10, No. 24/25, p. 
756-763- 
