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Boron deficiency in pulses

Boron is an essential micronutrient required for the growth and development of pulses, including broad beans, lentils, Bambara groundnut, chickpeas, pigeon peas, and cow peas.

Symptoms of boron deficiency in pulse crops can be found in the following:

  • Stems: Brittle, hollow, and weak stems with a reduced diameter which can lead to plants falling over. Stems may also turn brown.
  • Growth: Stunted growth and reduction in plant height
  • Roots: Reduced root development and black root
  • Flowers: Reduction in the number of flowers
  • Fruit set: Decreased fruit and deformed pods with fewer seeds
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How much boron is enough?

A little boron goes a long way when it comes to pulse crops. Although, research has shown that positive plant response can be seen in an application of 0.5-2.5 kg B ha-1, spraying crops fortnightly with borate fertilizer may be needed.

Always check with a local agronomist or soil expert to determine the boron levels in your fields.

Your boron fertilizer options for pulses

U.S Borax offers several boron fertilizers to fit your needs. We recommend applying Solubor or Liquibor at the pre-flowering stage:

  • Solubor®: A concentrated, highly soluble, and fast dissolving powder that is ideal for foliar and other sprays.
  • Liquibor®: A liquid boron fertilizer that requires no mixing or measuring.

U.S. Borax products for pulses

15% Boron | | OMRI Certified
Fertibor
Optimum product for suspensions

A fine crystalline borate ideal for NPK compound fertilizers and suspensions. Manufactured as free-flowing granules, Fertibor is easily handled and offers superior flow and consistency.

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15% Boron | | OMRI Certified
Granubor
Made especially for bulk blenders

A pure, 100% water-soluble micronutrient that meets boron demand during the growing season. Made especially for bulk blenders, Granubor helps to ensure uniform distribution in nutritional blends and in the field.

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20.5% Boron | | OMRI Certified
Solubor
Product of choice for foliar applications

A concentrated, highly soluble, and fast dissolving powder that is ideal for foliar and other sprays. With the highest concentration of boron in any approved product, Solubor is an economical choice for nutritional formulations.

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20.8% Boron
Anhybor
Boron for fertilizer manufacturing

This refined U.S. Borax product is made from the dehydration and fusion of borax. Depending on the grade, Anhybor can be used to produce boron-enriched compound fertilizers or to coat different fertilizer products, such as NPK blends with the aid of a binder.

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10% Boron
Solubor Flow
For fertigation or hydroponic growing

First and only aqueous suspension of sodium borate microcrystals.

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14.5% Boron | 29% Zinc
Zincubor
Perfect combination of zinc and boron

Because zinc and boron deficiency are widespread around the world, a product with both nutrients is a good fit in many regions. Zincubor brings these two important micronutrients together in one product.

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Soil Application (Suggested rates of application)

  Granubor Fertibor
LBS/ACRE 4.46 - 9.0 4.46 - 9.0
KG/HA 5.0 - 10.0 5.0 - 10.0

Foliar Application (Suggested rates of application)

  Solubor
LBS/ACRE 1.8
KG/HA 2.0

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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