Article by Presley and Leonard
THE EFFECT OF CALCIUM AND OTHER IONS ON THE EARLY
DEVELOPMENT OF THE RADICLE OF COTTON SEEDLINGS
J. T. PRESLEY AND 0. A. LEONARD
Published with the approval of the Director, Mississippi Agricultural Experiment
Station. Paper No. 140, New Series.
Received January 4, 1948
Article by V. A. Tiedjens
DOES A SOIL ACIDITY TEST AS USED IN SOIL TESTING
LABORATORIES DETERMINE OUR CALCIUM NEED
IN OHIO SOIL?
Soil samples from many sections of the United States and Canada show a paucity of
available calcium even though the pH reading seems satisfactory. Studies made on these
soils show that the pH test, accurate for most purposes, does not indicate the available
calcium in the presence of other fertilizer ions. A high pH does not necessarily indicate
adequate calcium in the soil.
THE OHIO JOURNAL OF SCIENCE 65(4): 227, July, 1965
Article by Tiedjens
AVAILABLE CALCIUM A FACTOR IN SALT BALANCE FOR VEGETABLE CROPS
By Victor A. Tiejens and L. G. Schermerhorn
