. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. ENVIRONMENTAL FACTORS 75 Solutions. It has been the general experience that the readily culturable parasitic and hemiparasitic fungi have about the same relation to strengths of solu- tions as the saprophytic forms. Ordinarily, therefore, such forms give abundant growth under widely different condi- tions of concentration of the substratum. According to Eschenhagen the concentra- tions at which Botrytis cinerea may grow under ordinary cir- cumstances are as follows : grape sugar, 5
. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. ENVIRONMENTAL FACTORS 75 Solutions. It has been the general experience that the readily culturable parasitic and hemiparasitic fungi have about the same relation to strengths of solu- tions as the saprophytic forms. Ordinarily, therefore, such forms give abundant growth under widely different condi- tions of concentration of the substratum. According to Eschenhagen the concentra- tions at which Botrytis cinerea may grow under ordinary cir- cumstances are as follows : grape sugar, 51 per cent; cane sugar, 37 per cent; sodium nitrate and calcium chloride, 16 per cent; sodium chloride, 12 per cent. In the culture work in the laboratory it will be found, however, that differences in the Strength of Fig. 15. Cells op Ericaceae (after Ter- the culture medium will be netz), and with Endophytic accompanied by noticeable Mycorhiza- als° Coralloid Roots differences in the form of the fungous colony, amount of the mycelium, and the character of the spores Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Duggar, Benjamin M. (Benjamin Minge), 1872-1956. Boston ; New York : Ginn
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