Table 27. Relative Tolerance of Vegetable Crops to Boron.

Tolerant
4.0 mg/L of boron		 Semi-tolerant
2.0 mg/L of boron		 Sensitive
1.0 mg/L of boron

Asparagus

Potato

Jerusalem Artichoke

Table beet

Tomato

Navy bean

Broad bean

Radish

  

Onion

Field pea

  

Turnip

Corn

  

Cabbage

Pumpkin

  

Lettuce

Bell pepper

  

Carrot

Sweet potato

  
 

Lima bean

  

Relative tolerance is based on the boron concentration in irrigation water at which boron toxicity symptoms were observed when plants were grown in sand culture. It does not necessarily indicate a reduction in crop yield.
Tolerance decreases in descending order in each column between the stated limits. 1mg/L = 1ppm.
Source: Irrigation water quality standard and salinity management strategies. By Guy Fipps. TAEX B-1667.


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