Category Archive: Calcium

Presley: Calcium and Seedlings

Article by Presley and Leonard

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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

Tiejens: Soil Acidity and Calcium Requirements

Article by V. A. Tiedjens

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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

Tiejens: Available Calcium and Salt Balance

Article by Tiedjens

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AVAILABLE CALCIUM A FACTOR IN SALT BALANCE FOR VEGETABLE CROPS

By Victor A. Tiejens and L. G. Schermerhorn