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Distribution of Cadmium and Zinc/Cadmium Ratios in Crops from 19 States East of the Rocky Mountains¹

ABSTRACT

Zinc and cadmium were determined on 153 wheat and perennial grass samples collected from rural areas in 19 states east of the Rocky Mountains. The levels of Cd were generally below 0.3 ppm. No distinct regional pattern of Cd concentration or Zn/Cd ratio was evident.

Key Words: hypertension • wheat • perennial grasses

¹ Contribution from the U. S. Plant, Soil, and Nutrition Laboratory, SWCRD, ARS, USDA, and Cornell Univ., Dep. of Agronomy, Ithaca, New York 14850. Agronomy Paper no. 986. The technical assistance of Joan Pushee and the many helpful suggestions of W. H. Allaway are gratefully acknowledged.

² Formerly Research Assistant, Dep. of Agronomy, Cornell Univ., Ithaca, New York. Presently at Huffman Laboratories, Inc. Wheat Ridge, Colo. 80033.

³ Soil Scientist, U. S. Dep. of Agriculture, and Associate Professor, Dep. of Agronomy, Cornell Univ., Ithaca, New York. Deceased October 5, 1970.

Received for publication May 25, 1972.