CONTENTS 



Page 



I. INTRODUCTION 1 



II. GENERAL 2 



lU. RELATIVE AVAILABILITY OF FALLOUT CONSTITUENTS 5 



IV. SOIL REACTIONS 6 



A. Adsorption 6 



B. Desorption 6 



C. Effects of Other Ions ^ 



D. pH Effects 7 



E. Clays 7 



F. Organic Matter 8 



G. Fixation 8 



H. Erosion 8 



V. PLANT RELATIONS 9 



A. Uptake 9 



B. Translocation 9 



C. Aerial Contamination 10 



D. Plant-Base Absorption 11 



E. Distribution in Plants 11 



F. Species Differences 12 



VI. RADIATION EFFECTS. 13 



A. External Radiation 13 



B. Internal Radiation 13 



VII. SOIL-PLANT RELATIONS 15 



A. Basic Aspects 15 



B. Competing and Carrier Cations 15 



C. Distribution Factors 16 



D. Effects of Clays and Anions 17 



VIII. MANAGEMENT 18 



A. The Effect of Liming 18 



B. Fertilizers 18 



C. Cultivation 18 



D. Moisture 19 



E. Prolonged Cropping 19 



IX. SUMMARY 20 



BIBLIOGRAPHY 22 



