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The Plant as an Indicator of the Relative Density of Soil Solutions
Author(s) -
Lyon T. Lyttleton,
Bizzell James A.
Publication year - 1912
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1912.00021962000400010009x
Subject(s) - citation , agriculture , library science , mathematics , agricultural science , sociology , agricultural economics , history , computer science , archaeology , economics , environmental science
In conducting a series of water culture experinaents with" wheat seedlings it was noticed that in the case of the stronger cultures the weight of dry matter produced in the plants per unit of transpiration increased with the density of the nutrient solution in which the plants were grown. It was decided to ascertain whether this held for different kinds of solutions, and for soil treated in different ways. Plants were grown in I2O c.c. bottles with perforations in the corks through which the plant passed, the corks being arranged to prevent, so far as possible, the loss of moisture except through the plant. The solutions were changed twice a week, at which times the bottles were weighed to determine loss of moisture. Plants were sprouted in crushed quartz and transferred to the bottles a few days after germination. The seedlings were grown for three to four weeks in the bottles. The stock nutrient solution was made up as follows :