...we will appreciate from the readers complementary and /or different data on the subject... 
      

  Values of conductivity most acceptable ranges for many different plants have been compiled. To build this chart the author used all bibliographycal references he could reach. This job is far from being complete. In order to have a wider and precise information on EC acceptable values, we will appreciate from the readers complementary and /or different data on the subject. To do that, please use the e-mail c_arano@yahoo.com.ar

    To didactical effects plants were separated in four groups according to their food requirements. However, nutritive solution concentrations are shown here as low, medium low, medium high and high. Since there are several superpositions at the range's extremes, this division is only relative.

Conductivity in µS/cm
Low Medium low Medium high High
800                       1200    
                          1000                             1800  
                            1600                          2200
                             2000                        5000
EC

µS/cm
Low Medium low Medium high High
Vegetables from kitchen garden

Peppers

     1800-2200  
Garlic   1400-1800    
Artichoke 800-1800    
Celery     1800-2400  
Peas 800-1800    
Sweet potatoes     2000-2500

Egg plant

       2500-3500
Broccoli       2800-3500
Onions   1400-1800    
Parsnip   1400-1800    
Cauliflower   1500-2000    
Endives     2000-2400 
Asparagus   1400-1800    
Spinach     1800-2300  
Pea     1800-2400  
Lettuce 800-1200      
Sweet corn     1600-2400  
Turnip     1800-2400  
Okra       2000-2400
Potatoes       2000-2500
Cucumbers    

1700-2800
Beans       2000-2400
Wide beans     1800-2200  
Leek   1400-1800    
Radish     1600-2200  
Red beet    

1800-5000
Cabbage       2500-3000
Brussels cabbage       2500-3000
Tomato       2000-5000
Carrots     1600-2000  
Squash     1800-2400  
Zucchini     1800-2400  

Fruits
Pineapple     2000-2400
Blueberries     1800-2000  
Banana     1800-2200  
Strawberries     1800-2200  
Blackberries   1400-1800    
Redberries   1400-1800    
Melon     2000-2500
Passion flower     1600-2400  
Rhubarb     1600-2000  
Watermelon     1500-2400  

Herbs
Chicory     2000-2400
Basil   1000-1600    
Watercress 400-1800    
Chive     1800-2200  
Fennel   1000-1400    
Lavender   1000-1400    
Sweet marjoram     1600-2000  
Mint     2000-2400
Mustard   1200-2400  
Parsley 800-1800    
Rosemary   1000-1600    
Sage   1000-1600    
Thyme 800-1600    

Flowers and ornamentals
Gilliflower     1600-2000  
Aster     1800-2400
Begonia   1400-1800    
Bromelia 800-1200      
Caladium     1600-2000  
Cannaceous     1800-2400
Carnations       2000-3500
Mums     1800-2500
Dahlia   1500-2000  
Ficus     1600-2400
Gerbera     2000-2500
Gladiolus     2000-2400
Fern     1600-2000  
Impatient     1800-2000  
Palms     1600-2000  
Roses     1500-2500  
African Violets   1200-1500