Linseed / Flax

Boron deficiency in flax linseed

The young leaves are chlorotic and, in cases of severe boron deficiency, the growing points ultimately die. Shoots will develop from many nodes. Growth is generally reduced and the stems may be:

• Thick
• Twisted
• Possibly fasciated

The tips of the shoots turn yellow, wilt, and die.

In old plants, the top part may be affected while the lower part remains healthy. Seed and straw yield is reduced and the fiber may be poor quality. Boron deficient flax appears more susceptible to Fusarium than healthy flax.

Roots are dark and short when boron deficiency is severe.