CHIZU — the atlas of coffee research
Coffee research in Peru
Two limits come with this count. Only 100,474 of the 190,643 searchable papers (52.7%) carry an author affiliation country. The other 90,169 (47.3%) carry none. So these 675 papers are 675 out of the 100,474 whose affiliation is known. And a co-authored paper is counted once for every country its authors sit in. Per-country counts therefore do not add up to the whole.
Peru is a coffee-producing country.
Check it yourself
This is not our word for it. You can run the same query against the same index.
When they were written
1964–2026
Years before 1600 are treated as unknown. The upstream data (OpenAlex) sometimes writes 1400 when the year is missing, and that is a placeholder, not a measurement.
Where they appeared
Top 8 sources (journals and repositories)
Most cited
10 papers, most cited first
- The Impact of Fair Trade Certification for Coffee Farmers in Peru2011cited 305
- Energy potential from rice husk through direct combustion and fast pyrolysis: A review2016cited 251
- Dynamic capabilities in the “new normal”: a study of organizational flexibility, integration and agility in the Peruvian coffee supply chain2021cited 152
- Agrowaste derived biochars impregnated with ZnO for removal of arsenic and lead in water2020cited 135open access
- Measuring the impact of fair trade on development2009cited 119
- International Agricultural Research Tackling the Effects of Global and Climate Changes on Plant Diseases in the Developing World2011cited 118open access
- Life Cycle Assessment of rice husk as an energy source. A Peruvian case study2018cited 101
- Coupling of pollination services and coffee suitability under climate change2017cited 98open access
- Woody vegetation dynamics in the tropical and subtropical Andes from 2001 to 2014: Satellite image interpretation and expert validation2019cited 98open access
- Diversidade de ácaros (Arachnida: Acari) em Coffea arabica L. cv. Mundo Novo, nos municípios de Jeriquara e Garça, Estado de São Paulo2006cited 96open access
Which stage of coffee
Only 30.2% of the whole index carries a stage label. Of this country's 675 papers, 268 carry one. The breakdown below is about those 268 papers only — the rest were never candidates for it.
One paper can carry several labels, so the breakdown adds up to more than that number.
Which field
Only 75.9% of the whole index carries a field label. Of this country's 675 papers, 558 carry one. The breakdown below is about those 558 papers only — the rest were never candidates for it.
One paper can carry several labels, so the breakdown adds up to more than that number.
What language
"undetermined" means the upstream record carried no language. We did not guess one.
Knowledge is not evenly spread
Counting only papers whose author affiliation is known, the largest is Indonesia with 22,248. Peru has 675 — a factor of 33.
That gap does not follow where coffee is grown. Research gathers where the means to do research are, not where the coffee is. Making that visible is why CHIZU exists.
Other countries
Indonesia 22,248United States 17,988Brazil 10,857United Kingdom 5,569China 4,887India 3,542Germany 3,185Italy 3,111France 3,072Japan 2,822Colombia 2,489Spain 2,363