Kale

Boron deficiency in kale

The leaves of boron deficient kale are curled, rolled, and somewhat chlorotic or mottled, particularly around the leaf margins. The growing point dies in cases of severe deficiency and is replaced by lateral shoots. Brown and water-soaked areas may appear in the pith of the stem which may also be hollow.

Typical recommended ranges for boron boradcast soil application for kale is 2-3 lbs of B/acre. Normal plant analysis levels for the best quality and marketability have leaf boron levels in the 30-60 ppm range.*


*Always consult local crop advisors to check the proper dose rates. Rates of boron fertilization should be based on yield goals along with soil tests and/or plant tissue analyses.