Sugar cane

{Saccharum officinarum}

Boron Deficiency in Sugar cane

Boron is the most often deficient micronutrient in sugarcane plantations. Boron’s primary role in sugarcane is to act as a key component in a number vital process as metabolism of carbohydrates and transport of sugars through membranes which is highly important for sugarcane.

Boron is necessary for:

  • Synthesis of nucleic acids
  • Formation of cells walls
  • Cell division
  • Proper development of leaves

The first symptoms appear as small, narrow watery spots which develop parallel to the vascular bundles on the young leaves, resulting in a distinct striping. The lesions soon enlarge and the leaf tissue may later separate forming a fracture, the inner edge of which is serrated. Leaf tips can become necrotic, apical growth is retarded, and the young leaves are small, narrow and somewhat chlorotic. Internal brownish streaks frequently develop at, and slightly below, the growing point. Young plants are bunched with many secondary stalks. The spindle leaves turn white and dry out.

Note that “pokkah boeng,” a disease caused by Fusarium monoliforma and injury from the herbicide Dalapon, can cause symptoms similar to boron deficiency.

How much boron is enough?

Sugarcane plants remove significant amounts of boron from the soil each year. Once a plant shows signs of deficiency it cannot fully recover. Always consult local department of agriculture to check the proper dose rates.

Rates of boron fertilization should be based on yield goals along with soil tests and/or plant analyses.

Timing your boron application

  • Boron may be applied in dry or fluid blends. With dry bulk blend fertilizer, broadcasting before planting is recommended, using Granubor® 2.
  • Boron may be applied broadcast in a semicircle around the plant using Fertibor®.
  • Boron in liquid fertilizers may be broadcast, or fertigated using Solubor®. This material may also be mixed with pesticides or, in aqueous spray, applied to foliage.
     

Soil Application (Suggested rates of application)

  Granubor 2 Fertibor
LBS./ACRE 4-13 4-13
KG/HA 4.50 - 14.63 4.50 - 14.63

Foliar Application (Suggested rates of application)

  Solubor
LBS./ACRE 3-9
KG/HA 3.375 - 10.125
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

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