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Cashew

{Anacardium occidentale}
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Boron deficiency in cashews

The first sign of boron deficiency in cashews is the swelling of the terminal section of the stem, which is followed by a stem necrosis in the same region. Necrotic spots may occur at random over the leaf surface. The youngest leaves tend to be deformed, being narrow and curled. When the deficiency is severe, the growing point dies back and axillary shoots develop.

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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