{Vitis vinifera}
Hen and Chick syndrome in Grapes

Spotting a Boron Deficiency

Hen and chick syndrome caused by lack of boron during fruit development.

Boron Deficiency in Grapes

Boron deficiency commonly reduces fruit set with bunches of small seedless berries and bunches of berries of varying sizes (known as “hens and chicks”). In severe cases of boron deficiency, no normal fruit develops. The young leaves show an interveinal chlorosis, and when the deficiency is severe they may be deformed. Internodes are short and ultimately the growing points die.

Soil Application (Suggested rates of application)

  Granubor 2 Fertibor
LBS./ACRE 13-45 13-45
KG/HA 14.63 - 50.63 14.63 - 50.63

Foliar Application (Suggested rates of application)

LBS./ACRE 1.4-2.4
KG/HA 1.575 - 2.7

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 500 customers with more than 1,700 delivery locations globally. We supply 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles east of Los Angeles.  Learn more about Rio Tinto

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