Hebei, China (2011): Yield increase of 7.03% as compared with routine fertilization
Java, Indonesia (2011-2012): Yield increase of 7.57%
Jilin, China (2011): Yield increase of 8.3% as compared with application of mixed fertilizer containing no zinc
Kentucky, USA (2020): Granubor shows a better performance than the control.
Mississippi, USA (2021): Granubor shows a better performance than the control and ulexite.
Paraná, Brazil (2015-2016): One year study of Granubor
Paraná, Brazil (2015-2016): One year study of Solubor Flow
Paraná, Brazil (2014-2015): One year study of Solubor
Rio Grande do Sul, Brazil (2019-2020): One year study of Granubor
Tennessee, USA (2004): Significant increase in yield
Wisconsin, USA (2022): The first corn study comparing Granubor and Solubor Flow +K
Mato Grosso do Sul, Brazil (2017 - 2019)