Walnut

{Juglans regia}

Boron Deficiency in Walnut

Large, irregular, necrotic patches develop between the veins, particularly on the terminal leaflets. When boron deficiency is severe, the leaves are twisted and the veins are very prominent. Dieback from tips of the shoots results in very evident leafless branches. The nuts do not set properly and a marked reduction in yield can be expected. Walnut trees do not usually need boron supplemenation until they reach bearing age (12 years).

Soil Application (Suggested rates of application)

  Granubor 2 Fertibor
LBS./ACRE 14-28 14-28
KG/HA 15.75 - 31.50 15.75 - 31.50

Foliar Application (Suggested rates of application)

  Solubor
LBS./ACRE 0.5-1
KG/HA 0.5625 - 1.125
Value in Use
Application Method
Acreage
Current Yield (Per Acre)
Lbs
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

Copyright © 2018 Rio Tinto. All Rights Reserved.