Coffee (São Paulo, Brazil)

Study details

  • Research institution: Adubai
  • Researcher: Fabio Vale
  • ​Date: 2013 – 2015
  • Location: Espirito Santo do Pinhal, São Paulo, Brazil
  • Soil: pH 5.3
  • Boron fertilizer(s): Boric acid, ulexite, and Granubor®
  • Crop variety: Catuai Amarelo IAC 62
  • Trial design: Randomized complete block design with 4 reps. Treatments were applied in one application in November 2013 and then again in November 2014.


Across two years of study at a boron rate of 1.5 kg B/ha, Granubor consistently had a better performance than boric acid and ulexite to increase coffee grain yield. On average, Granubor increased coffee yield in 1,670 kg/ha compared to the control and 995 kg/ha compared to ulexite.


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