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Table 25. Relative boron tolerance of agricultural crops1

VERY SENSITIVE (<0.5 me/l) MODERATELY SENSITIVE (1.0-2.0 mg/l)

Lemon               Citrus limon             Pepper, red          Capsicum annum    
Blackberry          Rubus spp.               Pea                  Pisum sativa      
                                             Carrot               Daucus carota     
                                             Radish               Raphanus sativus  
                                             Potato               Salanum tuberosum 
                                             Cucumber             Cucumis sativas   

SENSITIVE (0.5-0.75 mg/l)                    MODERATELY TOLERANT (2.0-4.0 mg/l)

Avocado             Persea americana         Lettuce              Lactuca sativa       
Grapefruit          Citrus X paradisi        Cabbage              B. olaracea capitata 
Orange              Citrus sinensis          Celery               Apium graveolens     
Apricot             Prunus armeniaca         Turnip               Brassica rapa        
Peach               Prunus persica           Bluegrass, Kentucky  Poa pratensis        
Cherry              Prunus avium             Oats                 Avena sativa         
Plum                Prunus domestica         Maize                Zea mays             
Persimmon           Diospyros kaki           Artichoke            Cynara scolymus      
Fig. Kadota         Ficus carica             Tobacco              Nicotiana tabacum    
Grape               Vitis vinifera           Mustard              Brasscia juncea      
Walnut              Juglans regia            Clover, sweet        Melilotus indica     
Pecan               Carya illinoiensis       Squash               Cucurbita pepo       
Cowpea              Vigna unguiculata        Muskmelon            Cucumis melo         
Onion               Allium cepa        


SENTITIVE (0.75-1.0 mg/l)                    TOLERANT (4.0-6.0 mg/l)

Garlic              Allium sativum           Sorghum              Sorghum bicolor      
Sweet potato        Ipomoea batatas          Tomato               L. Bycopersicum      
Wheat               Triticum eastivum        Alfalfa              Medicago sativa      
Barley              Hordeum vulgare          Vetch, purple        Vicia benghalensis   
Sunflower           Helianthus annuus        Parsley              Petroselinum crispum 
Bean, mung          Vigna radiata            Beet, red            Beta vulgaris        
Sesame              Sesamum indicum          Sugarbeet            Beta vulgaris        
Lupine              Lupinus hartwegil   
Strawberry          Fragaria spp.            VERY TOLERANT        (6.0-15.0 mg/l) 
Artichoke,Jerusalem Helianthus tuberosus
Bean, Kidney        Phaseolus vulgaris       Cotton               Gossypium hirsutum    
Bean, lima          Phaseolus lunatus        Asparagus            Asparagus officinalis 
Groundnut/Peanut    Arachis hypogaea    

1 Maximum concentrations tolerated in soil water without yield or vegetative growth reductions. Boron tolerances very depending upon climate, soil conditions and crop varieties. Maximum concentration in the irrigation water are approximately equal to these values or slightly less.
Source: Maas (1984)

 


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