Chapter 37

Nutritional resources of plants 

 Essential elements 

 

 Play many roles in plant metabolism 

 often function as enzyme factors 

 

 Macronutrients 

 

 required in amounts of atleast 1g per 1kg of dry plant mass 

 

 Micronutrients 

 

 trace elements 

 required in amounts at or less than 0.1g per 1kg of dry plant mass 

 

 Limiting factors 

 

 resources that can limit plant growth

 

 too little or too much 

 

 

 carbon dioxide 

 water 

 other mineral nutrients