Leek

Boron deficiency in leeks

Leeks seem to tolerate very low boron supplies without showing any symptoms. Transverse cracks known as “cat scratch” appear to be a characteristic boron deficiency symptom.

Typical recommended ranges for boron boradcast soil application for leeks is 1-2 lbs of B/acre. Normal plant analysis levels for the best quality and marketability have leaf boron levels in the 40-50 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.