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Life histories of two little known parasites of the apple and pear
(University of Missouri--Columbia, 1907)
The Sooty Blotch is a very common fungus upon the fruit of the apple and pear. It was first reported by Schweinitz in 1831 from Pennsylvania. Since then it has been reported from all parts of the United States and Europe. ...
Chemotropism of fungi
(University of Missouri--Columbia, 1905)
The changing of the direction of growth of fungous hyphae is a complex phenomenon in which at least two factors, cytotropism and hyrotropism, are concerned. Since the complete elimination of neither of these factors is ...
Temperature as a factor modifying the toxic action of certain chemicals on the germination and development of a few fungi
(University of Missouri--Columbia, 1905)
The purpose of the experiments, the results of which are presented in this paper, was to determine what might be the modifying effect of temperature on the toxic properties of certain chemicals as shown by the effect of ...
Conditions modifying the effect of deleterious agents upon the fungi
(University of Missouri--Columbia, 1905)
Nageli, Dandeno and True and Oglevee have drawn the conclusion that the presence of insoluble substances in toxic solutions reduces the toxicity of such solutions. Since in the work already done along this line, phanerogams ...
The mechanism of seed dispersal in polygonum virginianum
(University of Missouri--Columbia, 1906)
The achenes of Polygonum Virginianum Linnaeus have a particularly efficient mode of dispersal. The long two-parted styles are persistent and become lignified during the process of development. If, after maturity, these ...
The crown gall disease of the apple : a discussion of the malady in general as applied to Missouri : experiments with the disease
(University of Missouri--Columbia, 1903)
With ever increasing frequency for the past few years attention has been called to the existence of an affection of apple trees known as Crown Gall. This trouble, which is also known as "root gall", consists of galls or ...