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Product: Granuborx
Alfalfa (Wisconsin, USA)

Alfalfa (Wisconsin, USA)

Field Study

Wisconsin (2020-2021): Granubor showed a better performance than the control at all rates even though not statistically different.

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Arsenic lab trial

Field Study

Soil contamination by arsenic can trigger direct negative impacts on soil functionality and microbial communities. The agricultural production chain uses various fertilizers that may contain significant concentrations of arsenic. 

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Barley (Paraná, Brazil, Granubor)

Barley (Paraná, Brazil, Granubor)

Field Study

Paraná, Brazil (2020-2021): Application of 3 kg Granubor gave the highest barley grain yield compared to the control and acidulated ulexite.

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Canola (Alberta and Saskatchewan, Canada)

Field Study

Saskatchewan and Alberta, Canada (2023): Application of Granubor and Solubor yielded increases in comparison to the control treatment

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Canola (North Dakota, USA)

Canola (North Dakota, USA)

Field Study

North Dakota, USA (2025): Granubor + Solubor deliver highest grain yield performance.

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Coffee (Minas Gerais, Brazil)

Field Study

Minas Gerais, Brazil (2016-2017): Highest yield

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Coffee (São Paulo, Brazil)

Field Study

São Paulo, Brazil (2013-2015): Consistent yield increase

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Coffee (São Sebastião da Grama, Brazil)

Coffee (São Sebastião da Grama, Brazil)

Field Study

São Sebastião da Grama, Brazil (2020-2023): Higher coffee yield with Granubor

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Corn (East South Central, USA)

Field Study

East South Central, USA: Three trials of borate fertilizer on corn in Mississippi, Tennessee, and Kentucky

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Corn (Paraná, Brazil)

Field Study

Paraná, Brazil (2014-2016): Several field trials of U.S. Borax fertilizer products on corn

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Corn (Rio Grande do Sul, Brazil, Granubor)

Field Study

Rio Grande do Sul, Brazil (2019-2020): One year study of Granubor

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Corn (Wisconsin, USA)

Corn (Wisconsin, USA)

Field Study

Wisconsin, USA (2022): The first corn study comparing Granubor and Solubor Flow +K

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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 our customers with more than 1,200 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.

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