Boron in Plants (part 1)

Boron uptake by plants

Boron uptake by plants is controlled by the boron level in soil solution rather than the total boron content in soil. Boron uptake is a passive (non-metabolic) process. It moves with water in plant's tissues and accumulates in the leaves; therefore, Boron uptake and accumulation are directly dependent on the rate of transpiration.

Boron mobility in the phloem is now known to be plant-specie dependent.

Boron Toxicities and Deficiencies

Boron deficiency symptoms:

Limited budding, bud break, distorted shoot growth, short internodes, increased branching, flower buds falling and inhibition of fruit and seeds development

Boron toxicitysymptoms include:

Chlorotic leaftips, leaf necrosis, and later leaves falling and even plant death.