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Some Factors Affecting the Content, Fluctuation, and Distribution of White Clover in Permanent Sod Areas in Ohio
Author(s) -
Dodd D. R.
Publication year - 1942
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1942.036159950006000c0052x
Subject(s) - agricultural experiment station , agriculture , citation , white (mutation) , distribution (mathematics) , state (computer science) , political science , library science , agricultural economics , environmental science , mathematics , economics , history , computer science , archaeology , mathematical analysis , biochemistry , chemistry , algorithm , gene
WHITE CLOVER IN PERMANENT SOD AREAS IN OHIO D. R. DoDD W HITE clover, Trifolium repens, is the most common and most important legume in lawns and permanent pastures in Ohio. The value of white clover in a bluegrass sod is generally recognized but is indicated more specifically by the results of an experiment at Ohio State University, in cooperation with the Ohio Agricultural Experiment Station. In this experiment with plots in six replications, the average yields for the 3-year period 1937-39 were 1,182 pounds of dry matter and 213 pounds of pro.tein per acre for Kentucky bluegrass alone, and 4,093 pounds of dry matter and 958 pounds of protein for the mixture of Kentucky bluegrass and Louisiana white clover. (See Fig. i.) On the plots without clover in the above experiment, nitrogen became a serious limiting factor and responses to the mineral fertilizer were unsatisfactory. It would require 596 pounds of a 20% nitrogen carrier per acre annually to supply the difference between the nitrogen removed in the herbage from the Kentucky bluegrass-Louisiana white clover area and that removed from the Kentucky bluegrass area. Not only does the white clover increase the yield and protein content of the herbage, but it has proved very effective as a means of weed control. In the experiment above referred to, during 1938 and 1939, weeds occupied 33% of the ground area of the Kentucky bluegrass plots and only 5% of the Kentucky