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The Quantitative Development of Tops and Roots in Bluegrass with an Improved Method of Obtaining Root Yields 1
Author(s) -
Willard C. J.,
McClure G. M.
Publication year - 1932
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/agronj1932.00021962002400070001x
Subject(s) - agricultural experiment station , citation , mathematics , state (computer science) , agriculture , agronomy , library science , computer science , geography , algorithm , biology , archaeology
The senior author has made studies of legume roots by harvesting square yard samples. The first effort at washing out the underground parts of bluegrass showed that so large a sample as this could not be used because it .required too much time to wash the soil out of the sample. Preliminary triais of harvesting a number of square foot areas of bluegrass sod to detm’mine the magnitude of the sampling error from areas of this size were made by the junior author. Two series of samples were taken. One (series A), comprising eight samples from an area of bluegrass sod which had been cut only a few times in 1928 with a field mower, was secured on March 6, 1929. The other (series B), comprising nine samples, was from an eight-year-old pasture in which bl.uegrass predominated. The area had been frequently mowed with a lawn mower during ~928. The samples were chosen from areas on which the turf appeared to be uniform. All samples were taken to a dep}h of 6 inches.