Parsnip

Boron deficiency in parsnips

When parsnip plants are boron deficient, the young leaves are small and die off while the older leaves show a marginal yellowing followed by a brown scorch. The petioles, which are thick and stiff, may crack and bend over.

Typical recommended ranges for boron boradcast soil application for parsnips is 2-3 lbs of B/acre. Normal plant analysis levels for the best quality and marketability have leaf boron levels in the 25-70 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.