CONTENTS 



Lecture 1 



SURVEY OF PROBLEMS OF PLANT NUTRI- 

 TION:- Introduction — Problems of the soil 

 solution in relation to plant nutrition — the 

 role of soil colloids — soil acidity and alka- 

 linity in relation to plant growth — ex- 

 periments by artificial culture methods — 

 Climatic influences — Physiological and bio- 

 chemical INVESTIGATIONS 1 



Lecture 2 



MICRONUTRIENT CHEMICAL ELEMENTS AND 

 PLANT GROWTH :- FUNCTIONS of micronutrient 



ELEMENTS — PRACTICAL ASPECTS OF MICRONUTRIENT 



PROBLEMS — Discussions of zinc as a micronu- 

 trient ELEMENT — MiNUTE AMOUNTS OF CHEMICAL 

 ELEMENTS IN RELATION TO ANIMAL NUTRITION . 26 



Lecture 3 



THE ABSORPTION AND ACCUMULATION OF 

 SALTS BY PLANT CELLS:- STUDIES ON Nitella 

 CELLS — Use of radioactive isotopes — Metabo- 

 lism AND salt accumulation WITH SPECIAL 

 REFERENCE TO BARLEY ROOTS — ACCUMULATION OF 

 SALT AND PERMEABILITY — GENERAL REMARKS 48 



