{Prunus armeniaca}

Boron Deficiency in Apricots

When apricot trees are boron deficient, the fruit shows:

  • Severe cracking
  • Internal cork, particularly round the stone
  • A tendency toward premature ripening in the center

Brown, dried areas may also appear on the surface of the fruit. The leaves are narrow, brittle, and often curled at the margins. Branch dieback occurs.

Soil Application (Suggested rates of application)

  Granubor Fertibor
LBS/ACRE 7-21 7-21
KG/HA 7.88 - 23.63 7.88 - 23.63

Foliar Application (Suggested rates of application)

LBS/ACRE 0.5-1
KG/HA 0.5625 - 1.125
Value in Use
Current Yield (Per Acre)
Expected Sale Price

U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 650 customers with more than 1,800 delivery locations globally. We supply around 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles northeast of Los Angeles. Learn more about Rio Tinto.

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