Sweet potato

{Ipomoea batatas}

Boron Deficiency in Sweet potato

Brown necrotic areas are found in the flesh of the root, particularly near the cambium around the periphery of the root. The flesh and roots are misshapen and the skin is rough and leathery in texture. Severely affected roots show surface cankers and splits covered with a hardened and blackened exudate. Boron deficiency symptoms usually appear in the latter part of the season. The terminal growth of the vines is restricted and the internodes are shortened. As the deficiency becomes more severe, the petioles are curled and twisted, and the growing points may die. Premature abscission of leaves also occurs.

Soil Application (Suggested rates of application)

  Granubor 2 Fertibor
LBS./ACRE 3-6 3-6
KG/HA 3.38 - 6.75 3.38 - 6.75

Foliar Application (Suggested rates of application)

KG/HA 2.25 - 4.5
Value in Use
Application Method
Current Yield (Per Acre)
Expected Sale Price

Rio Tinto Borates is a global leader in the supply and science of borates - naturally-occurring minerals containing boron and other elements. Refined borates are essential nutrients for crops. We are 1,000 people serving 500 customers with over 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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