deficiency causes both leaf and fruit symptoms.
- The main leaf
symptoms are a distortion of newer leaves (in severe cases the
growing point dies) and the appearance of a broad yellow
border at the margins of the oldest leaves.
- Young fruit
will die or abort at high rates.
- The symptoms
of boron deficiency on mature fruit are distinctive and
include stunted development and mottled yellow longitudinal
streaks, which develop into corky markings (scurfing) along
- The proportion
of pith to seed is often higher in boron-deficient fruit.