Celery

Boron deficiency in celery

Brittle stems and the development of brown stripes in the epidermis above the vascular bundles of the petioles are usually the first signs of boron deficiency in celery. Sometimes, the brown stripes are so close together that they form a continuous line over the vascular bundles. Transverse cracks develop on the outer surface. The broken tissue curls outwards, giving the petiole a hairy appearance.

Blackened and diseased hearts are the most severe symptoms, but they are only found in stunted plants, accompanied by cracked petioles.

Typical recommended ranges for boron boradcast soil application for asparagus is 2-3 lbs of B/acre. Normal plant analysis levels for the best quality and marketability have leaf boron levels in the 25-50 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.